microcontrollers

[true cradle]

esp32 i suggest u buy the nodemcu one

https://makeradvisor.com/esp32-vs-esp8266/#:~:text=The ESP32 is a dual,ADC%2C DAC%2C and PWM.

one is esp32 other is 8266 different builds each

[cedar jasper]

any micro capable of runing a 7 inch touch screen?

[true cradle]

rpi

raspberry pi

@cedar jasper

[timber ferry]

thankkk youuu ]

[timber ferry]

ugh. make a robot?

[true cradle]

whats your def of cool stuff ? advantage of pice is small size so u should refer to some projects which take low space and low computing power since as far a i remember memory of pico is a little less

[fathom grove]

Hello!

I got an rPi pico

i use it for general

[spiral sandal]

the first one will not fit on a mini breadboard ( even if the pin was not bent), and will reset itself, at any close GSM activity nearby because of poor shielding. it will also have network problem on heavy load if used with stock micropython

it's dead cheap but there are others as cheap that can fit into mini breadboards ( pins writing are rotated 90° )

[timber ferry]

what do you mean "other"

which ones

could you tell me a little more about the close GSM reseting thing too please?

@spiral sandal

[spiral sandal]

put any smartphone in the 0-1 meters range of device and check uptime after a while, usually when cell tower negociation happens boards resets, especially when tower is not near you

"others" could look like that https://github.com/pmp-p/stupyde/blob/master/doc/not_weemos.png

[timber ferry]

so this would be a better choice?

[spiral sandal]

can't tell, but if you are beginning with python you'd better go for ESP32 + 4MiB psram wroom type

[timber ferry]

i can do both python and c

i used arduino before

nob but still i got exp

noob*

[spiral sandal]

the cheap ones work fine with arduino so you won't lose any money ( iirc they are less than $2.50 )

[timber ferry]

well i don't own an arduino i did projects with it in groups. i'm gonna buy this esp for personal projects. like exploring myself

its actually my first time purchsing a MC for myself. i'm gonna start with small projects to maybe hosting some webs too

and my reasoning in buying ESP is bcz its cheap

[spiral sandal]

esp8266 is cheap, fun and 5volts tolerant, but using it with python require skill because it only has 32k sram useable

[timber ferry]

hmmmm you can say i'm rather novice in all these. i'm 10th grader. self learning from youtube.

[spiral sandal]

then go esp32 + psram, it's not cheap but it won't fail you

esp32cam is also a good choice though not much free pins

[timber ferry]

like this one?

heres its describtions

[spiral sandal]

search for one with PSRAM

[timber ferry]

do you mean these?

[true cradle]

u can get a arduino as well while u are at it there are many projects and fun stuff which can be done in conjunction with both

[timber ferry]

i got a budget of 6.5$
:'>

[true cradle]

oh

[timber ferry]

yeah.. .. . .. .

so i'm trying to be sure about what i buy before i actually purchase it

i'd buy a rp pico but esp has wifi modules

[true cradle]

well u should prolly look up some projects first

[timber ferry]

i did. i have a few ready

[true cradle]

u should prolly save some to buy a higher level rpi

[timber ferry]

1. mq2 gas sensor that sends E mail notifications.
2. web hosting a simple web
3. moisture sensor that waters plants auto when low rating

these 3 seems basic

i have code ready for them

[true cradle]

lol i happen to have made all of em

i used to tinker a lot in class 10

[timber ferry]

i also used tinker

but tinker removed esps idk why

[true cradle]

u mean tinkercad?

[timber ferry]

i use some other web for esp simulations now

[timber ferry]

yes

[true cradle]

no i mean i have a box full of em arduino modules rpi and stuff in real life

[timber ferry]

yes these are traditionally the basic ones arent they

[true cradle]

yes

except for drones and one with lots of servos i made almost all of em

its like lego...

[timber ferry]

niceeeeeeeeeeee. maybe someday i will when i can afford them lol

[true cradle]

i didnt buy them all at once i accumulated over 2-3 years

now they are literally lying in dust

[timber ferry]

i understand. well after a year of searching and youtubing and getting bored i realized i should buy one or i'll fall out of interests

[timber ferry]

uuuf. gold mine to me lolo

[true cradle]

i wanted to make the big ones but i cant access 3d printer too often

and they require a lot of 3d printing

[timber ferry]

awh. idk i don't have any 3d printers

maybe in future i will

[true cradle]

i had in my school

[timber ferry]

i just got a pc last year

[true cradle]

3d printers and the plc stuff cost a lot high maintenance also its better to go to a nearby workshop

[timber ferry]

now i buy MC. later i will buy parts for my MC. maybe then i can save moeny for 3d printer

[true cradle]

lol

[timber ferry]

where i live don't have 3d printer workshop to give public services. :<

[true cradle]

i mean there is good old carboard and scissors

[timber ferry]

yes

[true cradle]

lol if u wanna do basic projects u should prolly just by a arduino nano and u can still have a bit of money left to buy sensors and jumper cables

there isnt much u can do with esp32 as of now without other modules to use with it

[timber ferry]

for some reasones a nano is more expensive than a esp here

[true cradle]

ooh

[timber ferry]

literally the market here made a syndicate to make arduino 3x expensive here.

bcz its popular. esp fair price bcz its not popular

[true cradle]

wow wait lemme see how much it costs in my amazon

[timber ferry]

sure

but it was suppos to be cheaper than the uno

[true cradle]

$10

[timber ferry]

oooo

[true cradle]

700inr

70 inr 1$ so 10$

[timber ferry]

welp i have 6.5$ max budget :<

inr is ugh ruppies ?

[true cradle]

yes

it wasnt so expensive a few years ago

i mean i bought a uno for arnd $5/450 inr at that time

[timber ferry]

yesss a few years ago there were sooo cheap. for some reason arduino is alooot more expensive now

[true cradle]

its out of stock as well in many places

well then go for esp then

nothing else to be done

get a esp32

[timber ferry]

hmhmhmhmhm ok......

my kidney hurts using the last of my pocket money rn now lol

[true cradle]

be carefult to buy one in which the pins are already soldred

[timber ferry]

wait what

i should not get pre soldred ???

[true cradle]

u should get pre soldred

[timber ferry]

o0o0o0oo

[true cradle]

thats the best soldering urself is a pain in the ass

[timber ferry]

yes i agree.

i hate soldering

[true cradle]

some products just give the pins along with the board

my school ordered a few nanos once i swear my eye power increased after soldering them

[timber ferry]

lmao

i feel u but not entirely

[true cradle]

lol

well i checked it seems esp32 can run micropython and c++ both seems nice to me

[timber ferry]

bcz the most soldering i did was on arduino uno just 4 pins

[timber ferry]

yesssss

[true cradle]

more powerful and better than arduino at lower price

[timber ferry]

i bet esp will over take arduino at this rate

[true cradle]

wifi connectivity seems better as well

[timber ferry]

bcz it feels like arduino is the apple of MC

[true cradle]

arduino has greater convenience of use so both have pros and cons

so for general public or beginners people might still choose arduino because it has larger number of tutorials and stuff

[timber ferry]

yeah.

[true cradle]

lol i still feel rpi is the best

[timber ferry]

its hard reading articles and low quality video for esp

[timber ferry]

i can't argue that. but its expensive af

[true cradle]

yes but it is like a own minilaptop

[timber ferry]

toooo much powerr

[true cradle]

it works with all sensors ever created for mc

[true cradle]

rpi 4b+ has 4gb ram thats good enough for its size

[timber ferry]

when i'm in uni i'll buy a rp 4b instead of a laptop and use remote desktop to use my pc in my rp4b

[true cradle]

lol just get a screen as well

[timber ferry]

yeah a touch one

and a mini keybord

[true cradle]

i have 3b+ runs nice but unfortunately i forgot to buy a fan or heatsink

[timber ferry]

touch screen 10k case 1k rp4b 8k keybord i already have.
so almost in 20k i can just use that its cooler and just remote desktop my pc from it so its efficiant too!! laptop with my pc power will cost 120k+

[timber ferry]

they kinda cheap tho

[true cradle]

1k rpi4b?

[true cradle]

now I use it so i didn't bother

[timber ferry]

nice

do you like have a job already?

[true cradle]

lol no i am still in school

[timber ferry]

class/grade/college?

[true cradle]

rpi 3b+ was 2.5k inr few years ago

high school 12 th grade

[timber ferry]

rpi is expensive now too much demand for it

[true cradle]

prolly i couldn't find it in Amazon scrolling 2 pages

dunno why demand rose or stock fell

[timber ferry]

yeah it is

bcz its tooo goof

good

[true cradle]

mostly people bored during lockdown

[timber ferry]

its just too good everyone wants it they can't produce enough

[timber ferry]

maybe lol

[true cradle]

i think if u but in local shops u can geta bit cheaper i saved a few bucks that way

[timber ferry]

impossiable to find it in local here

i tried

EVERY LOCAL SHOPS

[true cradle]

sed where do u live?

[timber ferry]

bangladesh

what about you

[true cradle]

ah india

lol i said inr

[timber ferry]

oooo hey neibor

[true cradle]

so u know Bengali?

[timber ferry]

yeah lol

i AM Bengali

[true cradle]

ah i am from West Bengal

[timber ferry]

kolkata ?

[true cradle]

but i think Bengali is a bit diff in both countries

yes

[timber ferry]

nicee. not so different. we have slightly different accent

some very minor words we use are like muslim cluture words and urdu words too. that makes our speaking slightly like very slightly differnet

[true cradle]

yah lol i saw that when i used to play coc and joined a Bengal only clan

[timber ferry]

oooo

you say dada we say vaiya

you say baba we say abbu

[true cradle]

ah

how do u know all that?

[timber ferry]

i mean we're 99% pretty similar. and i saw kolkata movies before

[true cradle]

ah cool

ok i GTG gn

[timber ferry]

oki bye bye

[true cradle]

u can ask if u have any doubts in dms

[timber ferry]

thank you sooo muchh

[fathom grove]

does someone of you own a Raspberry Pi Pico mcb?

[errant wigeon]

Yes, what is your question?

[fathom grove]

if anyone owns one

jusg

just

[errant wigeon]

Yup I've got one

[humble kraken]

I too have one

[steep dune]

ohhh , what convinced you to buy one?

[quick spoke]

Is this normal? I'm trying to upload like 4 lines of code in main.py on an ESP8266

Uploading to /...
Reading file status
[1/625] Writing file blink/boot.py (0kb)
[2/625] Writing file blink/main.py (0kb)

It also fails routinely, yet I can just run the code quite easily

[hallow igloo]

15 in stock

https://www.amazon.com/Raspberry-Model-2019-Quad-Bluetooth/dp/B07TC2BK1X/ref=sr_1_4?crid=39J0OKI513KNB&keywords=rasberry%2Bpi%2B4%2B&qid=1652268991&sprefix=Rasbe%2Caps%2C75&sr=8-4&th=1

[hallow igloo]

@true cradle then u have all the Kits that has Pi's in them... Prices are about right, not jacked high. Plenty of stock

[true cradle]

yep i see thx 🙂

[timber ferry]

@true cradle

yoo

i got que

[true cradle]

yes

[timber ferry]

can esp32 run some python libraries?

like pywhatkit

[slow zealot]

Hi all. Need some python help 😛
Have a 7 segment display i want to light up on my raspberry pi via a dict in my code 😕

have made a dict lbr, that have the right on and off combination, Only need to compare the dict with GPIO pins in some way so it will light up

[sinful steeple]

Hey! Has anyone here managed to successfully install Micropython on the ESP32-S2-Saola-1?

[onyx glade]

Don't know as I haven't used micropython on an esp8266, but it seems like it's correct, it looks like it is writing files to make the esp actually work too

[quick spoke]

Unfortunately it was a gotcha! I accidentally included the whole damn environment, when really just needed to include the main and boot files

I appreciate the response though!!

[onyx glade]

Ah, I see yeah as I said, don't know anything about them for sure, just speculations

[quick spoke]

It was a learning experience, haha

[quick spoke]

Shot in the dark, but do you all know of any 3/4 or 1" electronic valves that can operate at 5 volts? The options we found are either too small, too expensive (>$20/valve), or operate at 12 volts. I'm willing to modify or build it myself, but just to wanted to pick your all's brains about it.

[true cradle]

solenoid valve?

[true cradle]

https://randomnerdtutorials.com/getting-started-micropython-esp32-esp8266/
if micro python can have pywhatkit i don't see a reason why u cannot

[quick spoke]

Yup! But one on 5v and not 12 and has an opening wider than 1/2"

[true cradle]

oh ok lemme see

[quick spoke]

I've struck out on other forums and websites. No rush! I'm pretty sure I'll have to just find a 3/4" valve that's easy to turn and strap a servo to it

[true cradle]

is 1/2" fine or does it have to be wider

[quick spoke]

Wider :(

[true cradle]

ok what do u need it for?

[quick spoke]

A 1/2 that works on 5v may be a reach option if we get desperate

We have low pressure water coming from a water tower we build in the middle of nowhere supplying water to our crops, think like 3 psi and flow doesn't reach sufficient amounts unless the pipe is 3/4" wide

[true cradle]

do u need power equivalent to 3/4" or just need more output

[quick spoke]

Our solar panel and batteries supply 5v

[true cradle]

hmm

[quick spoke]

Power equivalent? I'm not sure I understand

I'm a chemical engineer, not electrical, by trade, so I'm a bit of of my element here

[true cradle]

i mean u want water output at high. pressure with 3/4"

[quick spoke]

Oh! Just 3psi, some latching valves have a minimum pressure requirement

[true cradle]

how much psi does a 1/2" valve have?

so i can give u 2 solutions currently either u can modify the nozzle urself for 1/2" valve making it wider

or u could get a bigger valve like this one
https://www.amazon.in/Electric-Solenoid-Normally-Closed-2-Position/dp/B08B664KVB

and give it external power supply using lion battery

[quick spoke]

In our case, the valve could have anywhere from 0 to 4 psi!

[true cradle]

then u can just get ur custom nozzle

widen ur current nozzle of the valve

[quick spoke]

Huh? Wouldn't the necked region restrict the flow if it was a 0.5" valve?

[true cradle]

yeah u have to modify the module

[quick spoke]

oof

I understand you now

what about a 5v to 12v step up module?

[timber ferry]

Rename the file boot.py instead.

[true cradle]

lol or otherwise u can connect the valve control and ground pin to the board but power it externally

using preferably li-ion batteries

[hallow igloo]

hey there! i got a simple question, is pi pico good for using python?(i new to microcontroller)

im*

[true cradle]

rpi pico is a cpu/processor and it's os from raspian is Linux based

so there isn't much connection whether it is good for python or not it's same as asking is ur windows laptop good for python

basically matter on ide

pico has thonny

which is good for beginners

[hallow igloo]

so does it mean that i cant use all the sensor with it?

[true cradle]

you can it has pins

[hallow igloo]

i heard it doesnt support all?

is that so?

coz i want to use it with multiple sensore

sensors*

[true cradle]

depends on number of pins available

[hallow igloo]

like bmp mpu 4 servo and couple of led

[true cradle]

led need only one pin servo same

more than enough

[hallow igloo]

yeah thank you for the help dude

[true cradle]

u have to power the servo externally for better performance

and ground will connect to board

[hallow igloo]

its the same battery so i dont think there will be a problem

how can i switch heavy load with pico?

mosfet?

or bjt?

[true cradle]

hmm

[hallow igloo]

?

[true cradle]

idk i never tried or see them before so lemme run thru their docs

[hallow igloo]

ohk

let me know

!

[true cradle]

bjt

[hallow igloo]

what abt mosfet?

[true cradle]

https://www.elprocus.com/difference-between-bjt-and-mosfet/

[hallow igloo]

haha thanks

[solemn oasis]

Does anyone here know about any Raspberry Pi Simulator?

[true cradle]

for what?

[raven imp]

anyone who knows something about raspberry pi gpio's and relay?

[timber ferry]

Yeah why?

[timber ferry]

Search it

[timber ferry]

Here I found an RP pico simulation

https://wokwi.com/projects/new/pi-pico

[heady quest]

hey I need help with connecting a python program to my lego mindstorms brick, any ideas?

I found an API for it, but I can't use it with vscode

hello?

anyone?

[raven imp]

can you look in help channel #help-orange than?

[onyx glade]

I coded for 8 hours straight yesterday via ssh onto my raspberry pi 4, and my power supply broke and shot out 9v and it fried the thing…

The OS was Ubuntu server 20.04, if I use a raspberry pi 3b will it probably work with the same sd or will I need to figure something else out?

(Avoiding reinstalling stuff)

[steep dune]

@onyx glade too bad about your power supply - could you send a pic of supply and the box it came in -- maybe others have same type ?

[true cradle]

use either rechargeable batteries for steady supply or some powerbank another option would be small invertors

essentially still rechargeable batteries

[humble kraken]

Watch great Scott electronics channel, he has catalogue of videos which can tell you how to use mosfet, drive inductive load (motor), etc in hobby electronics projects

[humble kraken]

It's a full arm linux OS. Why you want to simulate it. You can run an arm emu program I guess and install a distro on it

[onyx glade]

It was just some no-name type of power supply I just simply had one laying around from whatever and I ended up taking it and using it for my pi

It was dumb in retrospect but I just didn't have a good one to use.

[steep dune]

@onyx glade i use a old ATX power supply for my projects s , clean 3 , 5 , 12 V - just a new cable adaptor - then i dont have to worry about , under AMP or UNDERVOLT , because if i use LM317( 3V ) or 7805 , 7812 , they have odd voltage related to temp behavior

for my RPi i use a adafruit supply specifically for a pi 3

[stray raptor]

drgh vhj;ujrghj.kl;'

oiu

,,

[hasty zealot]

:incoming_envelope: :ok_hand: applied mute to @stray raptor until <t:1652588287:f> (9 minutes and 59 seconds) (reason: duplicates rule: sent 4 duplicated messages in 10s).

[hallow igloo]

OKIE

TKS

[onyx glade]

Any debugging help? I recently bough a new rpi 4 and when I set it up, I set it up to connect to my network VIA the raspberry pi imager. Upon boot it works but when I went to ssh into it, the pi disconnected from my router. I restarted my PI but this time it wouldn't even connect once.

The RPI is running on Ubuntu Server 20.04, I connected a display and it says: brcmfmac: brmcf_sdio_txfail: sdio error, abort command and terminate frame, writing this ever 1 or so seconds.

Update:
I just swapped the os with raspbian and am updating everything, but I was able to ssh in.

Connection died midway through

[onyx glade]

Update 2:
I had a wifi adapter laying around so I decided to give that a shot, it seems to work fine now. Do you guys think I could've gotten a bad board?

[tropic horizon]

try a different cable?

[onyx glade]

Wdym? I'm not running via ethernet, but Wifi.

[tropic horizon]

oh I misunderstood

[onyx glade]

I might have gotten it working

Idk what I did, but I'm at a new record for connection time lol

Nope

[true cradle]

it might be a problem with the wifi chip in the rpi

u could use ethernet

[true cradle]

wifi adaptor here is an external wifi chip embedded in it u are using that instead of rpis internal one

WiFi chip BCM4345/6 -----> RPI 4 wifi chip

https://raspberrypi.stackexchange.com/questions/106947/wlan-module-gone-rpi-4-b

it might have something to do to initialize the wifi chip

[true cradle]

it seems this is a common issue

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/541016/am335x-error-message-in-sdio-driver

[onyx glade]

I just bought the thing, so I'm starting to consider returning it and just buying a new one

I do appreciate you looking into it a ton though!

[true cradle]

yeah as far i remember rpi has a warranty period

np

[onyx glade]

It does from what I've seen.

[true cradle]

but if u want a stable wifi connection i think ethernet is the go to choice

[onyx glade]

Oh without doubt, just with how I'm going to use it I won't be able to sadly.

[true cradle]

oh welp

well u should probably return that board ig ...

[onyx glade]

Yeah, thank you for looking into it as well!

[delicate knoll]

there is a python library for power measurement via current transformer on esp 32?

[errant wigeon]

What kind of power supply are you using? And do you have a heat sink on the pi?

[errant wigeon]

I don't know of a library for it, but it should be simple enough to write for your use case. There's a few similar project out there as well: https://github.com/rishabsingh3003/Energy-Meter
Obviously I have to point out that you shouldn't mess with mains voltage unless you know what you're doing, and don't adjust wiring while mains is live

[onyx glade]

I used two types of power supplies, one was using a lab bench power supply on the GPIO, and the other was an official power supply I bought.

I did also utilize heat sinks, though I tried with and without and had no difference.

[spice relic]

holistically, if you had two of the same kind of usb device connected to a microcontroller, is there any good way to reliably distinguish between them? or is that a situation of wanting to avoid that design altogether

[true cradle]

i think u can distinguish by which usb is connected to which port

as both will be assigned different ports by the rpi

[spice relic]

not a bad point actually, thanks 🙂

[next charm]

Hey guyz I'maa having a problem with esp8266 I wanna control my home appliances with esp btw it cant handle my relay even if added a transistor

[timber ferry]

I want to use some pyautogui and pyqt5 and some more audio library in my esp32 but it seems I can't use them there for some reason can anyone help me?

[gentle vapor]

they might also have a serial number you can read (not all devices do)

[delicate knoll]

thanks!

[left oasis]

Pyautogui is only supposed to be desktop

[timber ferry]

could there be an umm something similar to it for esp ?

[timber ferry]

I want a message box to pop up when I plug in my esp32

[true cradle]

design a gui then should be possible in esp

[rigid tangle]

hi all, am trying to program the ESP32-Cam Wrover Module, but I've been getting this error for quite some time also I looked at most fixes online and none of them work. Is anybody here able to help with this or has worked with this module before? Help 😦 😦

[true cradle]

problems like this are either the com port or the board is fried

[spiral sandal]

did you put the programming jumper on ? ( GPIO0 to ground probably )

[rigid tangle]

yes

[spiral sandal]

and 5volts power pin , 3volts is not enough for most esp32cam, otherwise yes bad com port , bad cable or board fried

[rigid tangle]

alright thanks, guess I just have to get a new one

[soft latch]

does anyone know how to controll led screens in ardrunio

[true cradle]

OLED screen which comes as module with Arduino or the lcd display?

[soft latch]

OLED

[finite orchid]

+1

[finite orchid]

https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwiM7fCD2u73AhVTS_EDHQxEB7sQFnoECAkQAw&url=https%3A%2F%2Fwww.circuitbasics.com%2Farduino-basics-controlling-led%2F&usg=AOvVaw0ZpnFgBTYVXJ2NmhxY21o7

[uncut hamlet]

Anyone with FRAM / I2C experience that could potentially help me figure out something ?

[soft latch]

thanks

[wintry junco]

hey can we use f-strings with ssd1306 in micropython

[gentle vapor]

Micropython supports f-strings, I'm not sure what you mean with "with ssd1306", a string is a string

[balmy ravine]

I need help setting up my rpi pico

@true cradle I need help with my rpi pico

[true cradle]

what help?

[balmy ravine]

#help-kiwi

@true cradle can u help or not? NP if u can’t

[hallow igloo]

What's the best micro controller to start with python? I have an Arduino Uno, but that uses a different language.

[open ingot]

raspberry pi

[true cradle]

you dont need a microcontroller to start with python

[timber ferry]

the pyautpgui?

[hallow igloo]

No, I know python already, just want a micro-controller to learn electronics.

[hallow igloo]

Have one, but I need a more basic one. Cheap. In case I break it.

[gentle vapor]

there's pretty much nothing cheaper and more available than the Raspberry Pi pico these days honnestly

it supports Micropython and Circuitpython, which gives you a chance to explore both

CP support the Seeed Xiao boards, which are pretty cheap too, MP should run on the Xiaos too, though only the samd21 one is listed on the site. RP2040 boards are great for python, I don't advise SAMD21 boards in general for lack of RAM.

cheap ESP32 or ESP32S2 boards would be good too, the LOLIN S2 Mini for example

4MB flash, 2MB ram, gives you a chance to play with wifi

all of these have prices in the $4-$6 range

[tired lintel]

Guys, do you think I would be able to make rc car with rpi4?

Does it store code like arduino? With arduino i can upload code and when its plugget to power it would do that. But with rpi4 you'd have to manually run the code?

[carmine kestrel]

@tired lintel Use your favorite search engine with the keywords "RC car with rpi4 programming with python," which supplies many step-by-step examples and YouTube videos in different price ranges. PS4 controllers can even be used to steer the car.

[true cradle]

let me chalk it up for you rpi u can basically install your ide and run any project on it , Arduino runs c++ but their is a way to run python on it
https://www.google.com/url?sa=t&source=web&rct=j&url=https://docs.arduino.cc/learn/programming/arduino-and-python%23:~:text%3DThe%2520Arduino%2520IDE%2520does%2520not,available%2520directly%2520in%2520the%2520editor.&ved=2ahUKEwiqqsCdvfT3AhWKSWwGHQBkDTMQFnoECA8QBQ&usg=AOvVaw1wKim_JxP5AlJ1kCIKbFK-
otherwise u could also go for espew which it's official and inbuilt ide supports micro python

[true cradle]

u can code the rpi how u want it and in rpi there is a way to run the programme on startup that should run the programme whenever u start ur rpi

[timber ferry]

definitly but its an overkill

[tired lintel]

Do you think I can make a wifi hotspot for my rpi so I can connect my phone to to access it's flask application?

[true cradle]

wdym wifi hotspot rpi can connect to wifi

[boreal creek]

Hi guy! i have a question about DIY project, when we use arduino for project and when to pick the other type of microcontroller ? for example drone, electronic toy car or cleaning bot, etc. Because as i known, except for Ras pi, arduino and some other microcontrollers both have the same abilities

[tired lintel]

Can you have Flask webserver on a RPi Pico?

I do know I'd need a wifi module, but is it a long shot to even try?

I rather just get RPi 4b for this project then.

[true cradle]

wdym when to pick other type of microcontrollers?

[next charm]

Dude with me too this has been happned it is caused due to some error in uart port or Drive is not installed are you programming it with esptool library pls tell me

[boreal creek]

like other brand ?

[true cradle]

hornbill ig then

looks nice aesthetically idk how it works tho never used it

[errant wigeon]

Typically you pick the micro according to your design constraints. The pinned message in this channel has a description of programming with python on microcontrollers, but here's a list of circuit python compatible boards: https://circuitpython.org/downloads
Sometimes you need low power consumption, sometimes you need lots of chips, sometimes you need lots of ram. That's the kind of variables you consider when exploring which chipset to you.

[errant wigeon]

A pico is a microcontroller, and it doesn't have much peripheral hardware (no onboard wifi). A rpi 4b is a full embedded linux system, so you can run just about everything that can run on a linux kernel. The pico is great, but you're right you'd need to try to get a wifi module with it. You could switch to an ESP32-S2 or something of the sort, but a rpi4b might be easier if you really want the flask webserver

[tired lintel]

Yeah, figured that one out! Thanks mate! 👌

[stuck tulip]

you mean phish?

oops, never mind 🙂

[boreal creek]

got it! thank you

[boreal creek]

how about home electronic ? something like microwave, oven or washing machine, do they made by arduino or some specific microtroller ?

[spiral sandal]

avr or stm32 mcu are very common and arduino ide can handle both

[spiral sandal]

original arduino uno is a board designed around an 2 AVR mcu, the arduino ecosystem is a set of headers and libraries added to C++ toolchains (compilers) made for/by vendor mcu

[boreal creek]

ah ok ! thx, i'm new to embedded, so should i pick arduino for learning and practicing ?

[spiral sandal]

and all the boards here https://www.armbian.com/download/ are SOC ( system on chip )

MCU and SOC are two different worlds

[boreal creek]

wow i'm confused with those boards

it's a lot

[spiral sandal]

orange pi though has both an MCU and SOC, but the mcu part is very hard to program it's an old or1k design

[spiral sandal]

depends on what your goal is like on a car would you like ( or which part do you find really usefull) to operate injection and things that prevent people being killed or the gps display and movie player ?

[boreal creek]

which one is the most easiest and flexiblity ?

[spiral sandal]

it's two different jobs

but afaik no one ever got sued because the movie player crashed mid movie in a car

[boreal creek]

i mean like which board is the best for studying embedded programming for beginner ?

[spiral sandal]

i'd say any board will do since after a while they will all look to you the same because you'll know how they are made and work. but in the process you may destroy a lot of them so maybe pick a bag of cheap ones first

esp8266 is really very cheap

cheaper is the stm32 "bluepill" but it's harder for beginner

and has no wifi

these are stil MCU

esp32 is not really an mcu it's a dual core and can run like (and probably faster) a personnal computer of the 80"

[boreal creek]

wait ?if i code wrong, will the code destroy the board ?

[spiral sandal]

it could

[boreal creek]

OMG

there was a guy on youtube make tutorial about UNO board

is it cheap and good enough ?

[spiral sandal]

https://www.rugged-circuits.com/10-ways-to-destroy-an-arduino

esp8266 is way better than uno

it can do the same ( at beginner level) as a uno and more , for cheaper

[boreal creek]

wow

wait does it explose when i make a mistake on coding

[spiral sandal]

also esp8266 is 5 volts tolerant like arduino uno

so less "magic smoke"

[boreal creek]

does microcontroller make fire or shocking if i set up it wrong ?

i've never touch any board before

[spiral sandal]

well avoid touching them first, they don't like static electricity

and no they should not make fire, that does not mean you don't need to have a bucket of sand at hand on the workbench

better safe than sorry

fire hazard is real for board with li-ion cell and bad design

https://www.thethingsnetwork.org/community/berlin/post/warning-attention-users-of-ttgo21-v16-boards-labeled-t3_v16-on-pcb-battery-exploded-and-got-on-fire

[boreal creek]

can u power it by computer power ?

because it seems more safety than battery

[spiral sandal]

a separate quality 5volts supply is usually better/safer

especially when playing with motors

[boreal creek]

do u hknow any youtube channel teach about embedded programming ?

like a recommend

[spiral sandal]

no i still use books

and datasheets

[boreal creek]

what bookis that ?

[true cradle]

umm it prolly won't unless u destroy the bootloader and it's internal parsers and mechanics these might harm ur board from software perspective but not hardware

[true cradle]

most microboard fries are due to wrong connection or poor soldering

[mystic haven]

@rose furnace why did you spam this message over like 10 different channels? ...

it's literally in every channel in this category that's below #game-development

!rule 7

[hasty zealot]

Rules

7. Keep discussions relevant to the channel topic. Each channel's description tells you the topic.

[dry fulcrum]

<@&831776746206265384>

[mystic haven]

you can get help, but use the help channels, there's #❓｜how-to-get-help, don't just spam your way toward getting quick help

[calm tapir]

!mute 858614454623010847 1d If you don't care about our rules then you definitely won't get help here

[hasty zealot]

:incoming_envelope: :ok_hand: applied mute to @rose furnace until <t:1653672488:f> (23 hours and 59 minutes).

[onyx glade]

To anyone who has knowledge of rpi clusters, do they operate under the same concept as a botnet, just local?

I mean the sense that they all operate by themselves, but the way the operate is dependent on one rpi.

[icy quarry]

a cluster is a group of something. There are no specific implications about the way they go about it

So basically it just mens a group of rpi doing something in a coordinated manner somehow

[pine cloud]

i am working on this repo that has pi pico tutorials and i finished the first one and I am looking for some feedback https://github.com/AndrewSae/Raspberry-Pi-Pico-Project-Tutorials/tree/main/Led Blink

[covert mica]

Hello, Guys,
I have no idea, what can I do... I mounted EEZYBotArm MK2 arm and I have coded simple code to cotrol him. I got stuck...
I run the script ServoFirmata for firmata protocol in Arduino IDE, then I run python code.
I have installed pyfirmata library. I choose a board in Arduino IDE and run the script, next I run the python code.
I had been running python code in file before I decided to run line-by-line code in a python shell.
Firstly, I import library and SERVO and Arduino variable from pyfirmata's module. Secondly I set board variable, which It is connector with Arduino board. Then I run SERVO mode on the pin and at this moment servo starts rotates in infinity.
The same thing happens when I type: board.get_pin("d:3:s"). I need your help.
Full test code typed in the shell:
First version:

from pyfirmata import Arduino, SERVO
board = Arduino("COM5")
board.digital[3].mode = SERVO

After these lines servo starts rotating all-the-time.
Second version:

from pyfirmata import Arduino
board = Arduino("COM5")
pin1 = board.get_pin("d:3:s")

After these lines servo starts rotating all-the-time.

Help, Guys... Gimme a hand.

[covert mica]

ech

problem solvefd

solved

[sage flare]

hi guys,i have a problem with pymata,I've been trying to use a hc-sro4 sensor with my arduno uno and then I got this error

'''py
from random import triangular
from tkinter import OFF, ON
import speech_recognition as sr
from pyfirmata import Arduino
from pymata4 import pymata4
from socket import socket
import time
#used to check if the arduino port selected is the right one
#board = Arduino('/dev/ttyACM0')
#print(board.get_firmata_version())
#led = board.get_pin('d:10:o')
#red = 9
#blue = 8
#yellow = 5
trig = 10
eco = 11

board = pymata4.Pymata4( com_port='/dev/ttyACM0', arduino_wait=10, baud_rate=57600)

def the_callback(data):
print("Distance is: ", data[2])

board.set_pin_mode_sonar(trig, eco, the_callback)

while True:
try:
time.sleep(1)
board.sonar_read(trig)
except Exception:
board.shutdown()

#r = sr.Recognizer()

#try:

text = r.recognize_google(audio)

print("You said: {}".format(text))

#except:

print("Sorry, cannot understand what u said.")

#board.digital[red].write(ON)
#board.digital[blue].write(ON)
#board.digital[yellow].write(ON)

#with sr.Microphone() as source:

print("Say anything: ")

audio = r.listen(source)

#try:

text = r.recognize_google(audio)

print("You said: {}".format(text))

#except:

print("Sorry, cannot understand what u said.")

#if text == 'red':

board.digital[red].write(OFF)

#elif text == 'blue':

board.digital[blue].write(OFF)

#elif text == 'yellow':

board.digital[yellow].write(OFF)

'''

I hope someone can help me

[subtle fable]

Did you mean to put that as parameters on the line before? Why are you calling Pymata4() multiple times?

[rigid tangle]

I have it figured out, apperently I had to select the AI_Thinker_module in the code and set the board as Wrover Module

Hi all, I am working with the BMP280 sensor, form keyestudio, but when i upload the test code...I don't see any readings on the serial monitor, just saying "BMP Test". Any idea what is matter. I have my connection in I2C mode.

[sage flare]

I fixed this error, I put edited the post and I had to but board = pymata4.Pymata4( com_port='/dev/ttyACM0', arduino_wait=10, baud_rate=57600) instead of the three lines where I mentioned mypata4(), but I got a new error

raise RuntimeError(f'Firmata Sketch Firmware Version Not Found')
RuntimeError: Firmata Sketch Firmware Version Not Found

[onyx glade]

Very late response, but thank you!

[agile bridge]

Hi I have a normal raspberry pi 4b with 4gb of memory and am using a 16gb SD card

Im also using a 3rd party raspberry pi nightvision camera, and i got it working after changing in the config.txt in boot with the start_x = 1 command

But now two days later i tried to use libcamera-hello and got this error

Made X/EGL preview window
[0:01:42.607683880] [2022]  INFO Camera camera_manager.cpp:293 libcamera v0.0.0+3544-22656360
[0:01:42.627085727] [2023] ERROR CameraSensor camera_sensor.cpp:591 'ov5647 10-0036': Camera sensor does not support test pattern modes.
[0:01:42.647450519] [2023]  INFO RPI raspberrypi.cpp:1356 Registered camera /base/soc/i2c0mux/i2c@1/ov5647@36 to Unicam device /dev/media3 and ISP device /dev/media0
[0:01:42.648312648] [2022]  INFO Camera camera.cpp:1029 configuring streams: (0) 1296x972-YUV420
[0:01:42.648655119] [2023]  INFO RPI raspberrypi.cpp:760 Sensor: /base/soc/i2c0mux/i2c@1/ov5647@36 - Selected sensor format: 1296x972-SGBRG10_1X10 - Selected unicam format: 1296x972-pGAA

also when trying to use cv2 for videocapture(0) i get false on the first variable returned

[true cradle]

did u change any of the default camera settings?

[agile bridge]

not since it worked

I only changed two lines in config.txt to make it work

but now a few days lateri t doesnt work

[true cradle]

did u by chance plug in the camera after starting the rpi?

anytime?

[true cradle]

in the rpi camera ribbon slot

[agile bridge]

nope, i plugged it in beforehand and havent dissconnected it since

[true cradle]

seems likely it's only a setting problem

do u have camera enabled in settings?

[agile bridge]

but how, i literally didjnt change anything

of course

[true cradle]

idk third party modules are not very reliable

[agile bridge]

like, when doing libcamera-hello the camera opens up for a second then crashes with that error messege

[true cradle]

what did u change inur config.txt

also send link for ur cam module

[true cradle]

yeah settings problem most likely it's forcibly shutting down the camera

[agile bridge]

https://shop.pimoroni.com/products/night-vision-camera-module-for-raspberry-pi?variant=12516582752339

[true cradle]

did u remove those nightlamps and screw them back on anytime?

ir lamps*

[agile bridge]

nope

[agile bridge]

had no reason to

[true cradle]

wow that's srsly strange then

[true cradle]

☝️

[agile bridge]

trying to find

[true cradle]

ok

if nothing works

just reload ur raspian

os and try again

[agile bridge]

oh god no

not again

i really hope it wont come to that

ive done that too many tim,es

at this point

[true cradle]

lmao send the changes here when u find em

[agile bridge]

#camera_auto_detect=1
start_x=1
gpu_mem=128

i commented out camera_auto_detect=1 and put in start_x=1 and gpu_mem=128

[true cradle]

hmm

i see

give me a sec

[true cradle]

https://forums.raspberrypi.com/viewtopic.php?t=323390

the camera module are now updated apparently

so no need to use the old ones

[agile bridge]

What do you mean

Regardless of whether i change config or not

It still aint workin

But it worked 2 days ago

I have just reset settings back to default

still get this

Made X/EGL preview window
[0:00:47.580062856] [1602]  INFO Camera camera_manager.cpp:293 libcamera v0.0.0+3544-22656360
[0:00:47.604756117] [1606] ERROR CameraSensor camera_sensor.cpp:591 'ov5647 10-0036': Camera sensor does not support test pattern modes.
[0:00:47.639684967] [1606]  INFO RPI raspberrypi.cpp:1356 Registered camera /base/soc/i2c0mux/i2c@1/ov5647@36 to Unicam device /dev/media3 and ISP device /dev/media1
[0:00:47.641070890] [1602]  INFO Camera camera.cpp:1029 configuring streams: (0) 1296x972-YUV420
[0:00:47.641610222] [1606]  INFO RPI raspberrypi.cpp:760 Sensor: /base/soc/i2c0mux/i2c@1/ov5647@36 - Selected sensor format: 1296x972-SGBRG10_1X10 - Selected unicam format: 1296x972-pGAA

and still recieve nothing when using opencv

so default settings aint workin for me

[errant wigeon]

Looks like you might be running into this issue: https://forums.raspberrypi.com/viewtopic.php?t=327141
Try running sudo apt update
and then
sudo apt upgrade

[prime arch]

hallo. Has anyone used U-Blox ZED-F9R or F9P GPS with ROS? I am writing a python code in ROS to send and receive data from GPS.
I have some doubts on sending data to the u-blox module. Kindly let me know if anyone have any experience.

More details:
Default IMU alignment in module = manual. Should send command to change it to Automatic.
Wheel tick data (Velocity data) outside the module should send as a publisher for correcting the GPS data.
I just need some example scripts that has similar or same purpose as above. Kindly support and Thanks!

[potent rover]

does anyone know where they sell micro usb adapter?

for my rasp pico

this is the example in my highly detailed drawing

[cyan folio]

What is microcontrollers?

[opal lodge]

that very much depends on where you are in the world and where you prefer to buy from
but a quick google search for "micro usb to usb b adapter" (without the double quotes) should give you plenty of options
make sure you get the male and female connectors right for your requirements

[potent rover]

no one sells it with 2 ends

[drifting mesa]

you sure about that?
https://www.amazon.com/UCEC-USB-2-0-Adapter-Male/dp/B00TAM0MZW
https://www.amazon.com/StarTech-USB-Micro-Cable-Adapter/dp/B001K9BEJ6

[opal lodge]

of course there are, and even if there hadn't been you could have solved that with a short usb cable

[potent rover]

i do have a usb cable, but it looks cooler if its shorter

[potent rover]

thanks

its more expensive than the actually rasp pico 😂

[gentle vapor]

there is that too https://www.adafruit.com/product/2910

[potent rover]

i dont think thats the right onr

one

[gentle vapor]

it's a male-male micro USB to USB A

it's just weird because the USB A plug has no casing around it

also it will plug your pico upside down with normal USB plug orientation

fits well in my hub, not as well in my laptop's ports

[potent rover]

its hard to find custom usb like this

[sharp idol]

So im trying to make Simon says from scratch. I’m not familiar with micro python though. What would be the best way to save a series of button inputs?

[dim palm]

[balmy ravine]

here is my code. I have a HC-SR501 PIR sensor co nnected to my pico but it isnt working why?

[balmy ravine]

@potent rover @true cradle

[brisk plover]

trying to control the microphone port and make it work in a certain way or any way that i need to

Receiving sound in a certain way, storing it in a certain form, stopping storing it in another way, and like that, converting it to other things

trying to learn a program language that i need to build robot mind 😔
i dont know what i need to have and learn

some people say i need
1-cpu
2- a driver api to interact with for Python to touch the microphone.
ok what about knowledge that i need for know how use 1 and 2
python? something specific

[sharp idol]

Has anyone used the on board pi pico rtc? I tried youtube but everyone seems to be using an expansion board or another.

[void zenith]

Finally got it done. It's a robot that pulls pucks from a conveyor belt and sorts them based on color. All the detection part was done using opencv.

[sly depot]

Hey congrats! Looks like excellent progress :)

[sly depot]

What exactly are you trying to do?

[sharp idol]

Keep track of time for my random.choice

[tired schooner]

Hi fellow coders

I have a project where a RPI Zero W is my host machine, so I'll try my luck here (this is obviously not very related to microcontrollers since any linux machine would have the same functionality)
basically, I send a BT signal via a remote to my RPI and it has to turn my lightswitch on

Issue I'm having: remote is BLE(low energy), so it "shuts off" after 5 mins
which means when I click the shutter again after 5 mins, the remote first has to connect to my rpi and after like 5 secs, it works as intended
this is shit because who wants to press his shutter/lightswitch twice for it to function properly?
(current fix: on connection, it just assumes I clicked the button, so it toggles the lightswitch)
this still takes 5 secs however, too frickin' long
any intakes on this? can I intercept the BT signal before it's even connected?
currently the shutter just acts as a keyboard and there's a script running in the background:
once shutter is connected, wait_for input, if input, toggle lightswitch

[balmy ravine]

I need help

I want to make a project with my pico but I don’t know what a specific component is called

It releases things on command

[sharp idol]

Can you be more specific? Releases objects? Releases liquids? Releases stored information?

[balmy ravine]

Thanks for replying

I am trying to make a catapult and need an electronic device that will release the arm on command

so releases objects

@sharp idol

[sharp idol]

How are you storing energy, a spring on the arm?

Also I might pass out, if I do I’ll reply when I wake up.

[balmy ravine]

ok

The arm (piece of wood) will be connected to an extended spring and then connected to the electronic I don't know yet, when a button is pressed the electronic will release the arm, the springs tension will cause it to fly out. It will then hit a piece of wood to stop the arm and to make whatever is in the catapult to fly out

@sharp idol

[fluid gull]

Microcontrollers are typically low-power packages containing CPUs + Flash ROM to store code + a small amount of RAM + sensors, that typically run only one program in a loop, without the overhead of running an operating system; they are typically embedded in physical applications (think doorbells, car key fobs, microwave ovens, etc.)

[true cradle]

what is life of a rpi 3b+ would it be fine if i host discord bot long term using it?

[opal lodge]

don't know but have not had any fail on me or anyone else i know irl yet (and as a total that is quite a few units that has been in service for many years)
what can fail is the micro-sd card if you run them long enough and have to much writing happening to them even if you buy high quality cards, so don't neglect backups, also for other contingencies
actually, the two times it has happened to me after many years of service the samsung cards could not boot as my root file system required read-write but could still be mounted read-only on another computer and copy all the data off the cards
the cards small on board memory contoller goes into a hardware locked read-only mode when it thinks the card risks data integrity with any more writes to protect any data that might be on the card

[sharp idol]

I have one from 2014. Is been abused physically and still works

[sharp idol]

I would suggest used a motor and motor controller to swing the arm.

[sharp idol]

Do i need a 5v regulator for AA batteries?

[humble kraken]

A long time, actually usually what fails is the SD card because they're generally not designed for tonnes of small writes, which an operating system will do. You can set an RPi 3 to boot completely off a USB SATA SSD though, and theoretically that could have years of uptime

[humble kraken]

depends what your project is lol. As an example, for a 3.3V MCU you might want to power it with 4x AA (6V start to ~3.6V end voltage) with a 3.3V LDO

[sharp idol]

That’s a lot of acronyms. I’m assume MCU is micro controller unit and not marvel Cinematic universe but what is LDO and why are 4 AA dropping close to half if voltage

[true cradle]

nice thank you for your responses guys

[sharp idol]

Does anyone have a good resource for created a bluetooth remote and a bluetooth recieve using two picos? Want to make an rc car from scratch

[cyan folio]

alright, thank you bro for the explanation, I asked the questions a long ago, thank you, your answer also gives me understanding about it, besides online articles

[rigid tangle]

Hi, Say I want to send only the value of temperature read from a sensor connected on an Arduino board, to an esp32 board, how do I do that using serial comms?

[timber ferry]

hellooo

can anyone help me using esp32 ?

i don't know if i need some sort of driver board to use 3 servo motors

[wicked flax]

Is it possible to do direct port manipulation using esp8266 and micropython??

i cant find instructions about it online

[timber ferry]

yes with the tx and rx pins\

[wicked flax]

why with those pins??
why not with normal gpio pins?
also how to do it

[timber ferry]

Tx and Rx pins in arduino are used for serial communication more accurately its called UART (Universal Asynchronous Receiver Transmitter). You can use this to communicate with any other device that has UART protocol(just make sure the baud rate or bits per second are same for both).

same for esp32 and esp86266

[wicked flax]

i can program them using tx and rx?

[timber ferry]

ye

[wicked flax]

i could just use a usb cable?

i was not asking how to program it
i was asking how to directly control its registers using code in micropython
or is it even possible
in an arduino the avr_dude library lets us do this

[timber ferry]

Hmmm maybe not... Very unlikely

[timber ferry]

Yeah you could code it.

And idk why there's soooooo minimum micro python libraries. there aren't even any sound or i2s library released

[wicked flax]

usb also has tx,rx and power right?

(usb a or b)

[wicked flax]

could i directely code the registers?
and if yes how to?

[royal willow]

responding late, but you should be able to connect the 2 devices using UART. UART has an RX pin (read) and TX pin (transmit), if you connect read->transmit and transmit->read between the 2 boards, you could communicate back and forth between the devices using some sort of UART library. You can probably just connect the arduino transmit to the esp read as you dont need communication the other way, but this is something I would look up to make sure

but UART is what you are looking for, look up how to connect have 2 microcontrollers talk to each other through uart

[sharp idol]

Does anyone know if the SH90 servo is continuous and if so how to use it with the pico? Everything I’m finding is 180 but I can physically spin it 360.

[visual gale]

hi i was wondering if anyone could help me figure out of to include the library cvzone with arduino uno using a zip file of cvzone. Ive already tried and for some reason it wont work.

i keep getting "Arduino: 1.8.19 (Mac OS X), Board: "Arduino Uno": Specified folder/zip file does not contain a valid library
"

[timber ferry]

not sure about this one

can anyone help me how to install modules from github to my esp32 micropython

anyone? n one? ok..

[sharp idol]

Im not getting any input. I made sure tx and rx are connected correctly. I can connect to the hc-05 but Im not recieveing the hello nor is the terminal showing any recieved data

from machine import UART, Pin
import time

uart0 = UART(0, baudrate=9600, tx=Pin(0), rx=Pin(1))
uart0.write('hello')  # write 5 bytes
while True:
    print(uart0.read(5))
    time.sleep(1/2)    ```

[hallow igloo]

Wow

why did I not check this before

[timber ferry]

Your pins aren't defined to take inputs. Write it like this:
Tx = Pin(0, Pin.IN) , Rx = Pin(1, Pin.IN)

❔Can someone help me figure out what type of MOTORs should I use for my Robotics project?❔

I want to use DC motors.
I need a ~1700g/cm torque or 1.7kg/cm torque to make my robot walk.
I'll use 2 motors (bcz it has two legs)
🚩 Now I'm not quite sure on which motor to use.. a 4 or 6 volt DC motor? 12 volt? But the 12 volts would be a over kill 🚩

📝Robot weights around ~1kg
📝 7×7.5 inc diameter robot
📝Materials are mostly Plastic [PVC (leg) and PET (body)]

✨Can anyone Suggest me something? ✨

[sharp idol]

I’ll try that @timber ferry And look at these https://a.co/d/ghWDNiB they use Han combined torque of 1.6 kg/cm using two. Use the L298n motor controller

[craggy sundial]

MICROCONTROLLERS

[sharp idol]

So I just weighed my robot, it weighs 589g with both batter packs and the motors have no problem. Im sure an extra 411g won’t be that bad. Will test when I fully wake up lol.

[timber ferry]

btw the TX pin was supposd to be output actually.. sorry my bad

also import os

[timber ferry]

btw could there be something a lil more stronger than this ?

[sharp idol]

Why os?

[timber ferry]

you might need to do something like this

import os, machine
from machine import UART
os.dupterm(None, 1)
uart = UART(0, baudrate=9600)
uart.write(‘Hello’)
uart.read(5)
os.dupterm(uart, 1)

[sharp idol]

Gotcha. I should be okay without duplicating the terminal.

[timber ferry]

i havn't gotten to the uart things on my project yet so i'm sorry if i'm wrong in some things

[sharp idol]

Apparently I either lost or threw away my Bluetooth module (it was hc05 and I can’t use it with my iPhone) so I have to wait for my new one to get here today.

[craggy sundial]

who knows AVR programming here right now

[stable lantern]

My project:

code:|| https://github.com/Techniq4/EEzy/blob/main/controller.py ||

What do you think? 🙂

[craggy sundial]

Arduino is fun

[stable lantern]

yes

but first i've made arduino code

and next i go to code in python

always ";" on the end of line 🏀

hah

[sharp idol]

Finally fixed my bluetooth problem. bt = UART(0, baudrate=9600, tx=Pin(0, Pin.IN), rx=Pin(1, Pin.OUT)) Had to specify pin in and pin out. also assumed that tx was out and rx was in since ya know, transmit and recieve.

[craggy sundial]

ohhh

so u can indeed code in python

in ardiunoo

and make projects work

nice

[stable lantern]

no no no

communication by serial port

python app is sending data about servo pos to arduino

and arduino reads it

[craggy sundial]

welp

i have'nt really worked on arduino smh

i need to really learn arduino ig

[craggy sundial]

thats arduino uno right?

[stable lantern]

yes

origninal

https://tenor.com/view/dave-chappelle-money-chappelle-king-cash-gif-5008243

[craggy sundial]

wlep

we only have access to fake ones here then

i mean we can buy

but

the fake ones are inexpensive

and have literally the same functions

[stable lantern]

yea, but that was a gift

[craggy sundial]

cool

[stable lantern]

arduino isn't hard

[hasty zealot]

Hey @craggy sundial!

It looks like you tried to attach file type(s) that we do not allow (.c). We currently allow the following file types: .gif, .jpg, .jpeg, .mov, .mp4, .mpg, .png, .mp3, .wav, .ogg, .webm, .webp, .flac, .m4a, .csv, .json.

Feel free to ask in #community-meta if you think this is a mistake.

Hey @craggy sundial!

You either uploaded a .txt file or entered a message that was too long. Please use our paste bin instead.

Hey @craggy sundial!

You either uploaded a .txt file or entered a message that was too long. Please use our paste bin instead.

[craggy sundial]

uh

smh

i need to read rules again mayhaps

https://paste.pythondiscord.com/tizomefuwu

ig

this is ti

so

this is my lab project, the schematic and hardware stuff is complete

[craggy sundial]

the avr code for atmega32 is complete, or it shouldve been

the problem is

the ADC is not working

on protesus it shows this error

i have tried diff commands in the program

but nope

been on it for forever now

today was project submission

but since code wasnt complete

i asked for more time

i have no idea now, for whats wrong with the code

[median oyster]

hmm

[craggy sundial]

so it'll be very helpful to recieve any tip or guide

[errant wigeon]

The ADC needs to be unlocked: https://www.avrfreaks.net/forum/tut-c-newbies-guide-avr-adc?page=all

ADMUX |=(1<<REFS0);//setting the reference of ADC
ADCSRA |=(1<<ADEN)|(1<<ADFR)|(1<<ADPS0);

I also don't see where these are defined, so you should probably check to make sure you're setting the registers bits correctly

[craggy sundial]

I'll look into it a bit more

And play with the program some more

Will give update later

[craggy sundial]

Although ADC shouldve been ok

[craggy sundial]

I don't understand this

I mean, wdym they're not defined

I'll read a bit more bout it too

[errant wigeon]

are those predefined avr values or are they defined by your program?

[craggy sundial]

Probably should look into everything

[craggy sundial]

Predefined

ATmega8

[errant wigeon]

ok cool, it's been almost a decade since I went through the avr data sheets so I'm rusty on it

Have you been going through this as you go? https://ww1.microchip.com/downloads/en/DeviceDoc/doc2503.pdf

[craggy sundial]

Lemme open

[errant wigeon]

There's a section that starts on page 201 that tells you about the adc, it's registers, and how to set them

pg 214 has the registers listed out in a table

[craggy sundial]

Ye i see em

[craggy sundial]

This should help, if i give time to it

Didn't specifically read this pdf

I have lab course named

Microprocessor and microcontroller

And the project also belongs to that course

We had lab tasks, manual

Probably missed something out

Should also review them again

[errant wigeon]

if you can figure out which line is throwing the locked error, you can try re-enabling the adc right before that line. Without knowing the line throwing the error it's taking me a really long time to step through the code

[craggy sundial]

I get you

[errant wigeon]

Once ADCL is read, ADC access to Data Registers
is blocked. This means that if ADCL has been read, and a conversion completes before ADCH is
read, neither register is updated and the result from the conversion is lost. When ADCH is read,
ADC access to the ADCH and ADCL Registers is re-enabled.
This also might be associated with why you're running into a locked error, but again without know where the error is coming from it's hard for me to pinpoint it

[craggy sundial]

That's the problem indeed

It must be at least

[craggy sundial]

Smh

[craggy sundial]

The problem is before the while 1 loo0

Althoug its already known

🥶

Is it because its ATmega8

Smh

[craggy sundial]

@errant wigeon KEIHHHHHHH

ITS WORKING

AAA

[craggy sundial]

Can't help, that's a Sick component

Lit

[errant wigeon]

congrats, what was the trick to getting it to work?

[craggy sundial]

.

Not entirely that

But

[craggy sundial]

This was after the while 1 looop

And i made another unsigned char to store the adc value

[errant wigeon]

Nice, good job working towards the solution!

How is it wired up and what are you running through it?

[tropic sandal]

bro how did you connect python code from ide to the robot? and using which all components did you make the robot

[stable lantern]

robot: https://www.thingiverse.com/thing:1454048
I just made python code sending data by serial and arduino code reading it
using pyserial library

[tropic sandal]

thanks

[next crescent]

hello guys, does upip support every pypi library?

such as discordpy, tensorflow.......

or the libraries should be compatible?

[spiral sandal]

tldr the libraries are not compatible, you can have those in https://github.com/micropython/micropython-lib or https://github.com/pfalcon/pycopy-lib / https://github.com/pmp-p/wapy-lib

[next crescent]

Thank you so much !

[wet ether]

What do wanna make ? It looks intersting

[next crescent]

I want to make an AI on my esp32 and I want it to interact with me through discord

But it’s too much space for a simple esp32

So gotta make it light somehow

[wise ruin]

using better handler will be better for controlling

[past oak]

how do you do configparser with micropython?

[vivid nebula]

Has anyone experiences with the pi pico? What frequency can I measure with micropython? I want to control a motor, that has an encoder with about 500 Hz. Is micropython on a pi pico fast enough or have I to use C++ for this task?

[fluid gull]

good question.. following.

[snow hare]

If you don't mind me asking, where did you get the parts to build the arm?

[stable lantern]

3d printed

[snow hare]

Oh that’s cool!

[steep dune]

ohhhh you can do differnt parts ? can you invent new mechanisms ?

[austere tulip]

I was working on a micropython project with some displays. Now the fonts are written in a bytearray and I have no clue how, from that bytearray the characters are being rendered. Anyone has any idea on that?

[stable lantern]

it's not my project: https://www.thingiverse.com/thing:1454048

[stable lantern]

with arduino 😄

communication between arduino and python app on computer with serial port

[little swallow]

İ have a Arduino code and in this code have a private code and i want send to another people but another people shouldn't see the code

How can I make

[balmy ravine]

!code

[hasty zealot]

Here's how to format Python code on Discord:

```py
print('Hello world!')
```

These are backticks, not quotes. Check this out if you can't find the backtick key.

[balmy ravine]

print('Hello world!')

[shadow sun]

Can you use python on an arduino?

[fierce pawn]

hi, don't know is it true channel

I'm trying to connect two computers with ftdi (or usb ttl)

and send and receive data from eaxh other

with serial communication

I started with c++ but later thought maybe python might be easier for this

any advice for should I use python and roadmap

[steep dune]

try .... pyserial

[leaden rune]

hey I know this is a stupid question but what can I do with a raspberry pi pico that doesnt need any kind of wire or breadboard ?
Just a raspberry pi pico

[gentle vapor]

a rubber ducky ? 🤷 Make the LED blink when the PC sends some data ? But yeah without connecting inputs and outputs you won't do much.

[leaden rune]

yeah I made a rubber ducky

hmm so other than that you cant do anything ?

ok thank

[gentle vapor]

if the issue is soldering, other RP2040 boards have solderless connectors like stemma QT/qwiic

[leaden rune]

nah my friend give it to me as a gift

I dont know what to do with it other than ducky

[gentle vapor]

yeah you want to add stuff, with buttons you can make a macropad, with LED strips you can make LED stuff, etc.

[dawn jacinth]

hi all. If anybody here has experience with working with arduino, motor drivers and motors with encoders and would be willing to help me get a project running I would be happy to pay for the help. Please dm me!

[opal lodge]

!rule 9

[hasty zealot]

Rules

9. Do not offer or ask for paid work of any kind.

[royal harness]

i’m good with radios

[thin wyvern]

Hello, im currently trying to program a laser via the serial interface using python. If you have any expirence programming serial devices please let me know im very knew to this and could use some extra knowledge. ***I have all relevant documentation for the laser**

This is my current code, along with the commands in the documentation. As of right now I am just trying to turn the device on. When running the code I can verify that it recognizes the device and i can open and close the port but when i write the "on" command to the device nothing seems to happen

[spiral sandal]

i don't see the ser.open()

[thin wyvern]

i was actually able to get it to turn on and off and figured out the problem now i need to read the data

it is a laser distance reader so i took a measurement but im not sure how to read the results of the module

[spiral sandal]

use ser.in_waiting to see when you need to read and how much

[thin wyvern]

@spiral sandal [13:33:43] -> 0xAA 0x00 0x00 0x20 0x00 0x01 0x00 0x02 0x23 [LENGTH=9]
[13:33:44] <- 0xAA 0x00 0x00 0x22 0x00 0x03 0x00 0x00 0x00 0xB5 0x01 0xFE 0xD9 [LENGTH=13]

that is what i sent with the test software the sent is length 9 assuming 9 bytes while the other im assuming is the recieve which is 13 bytes

[fluid gull]

HI, WHO ELSE is PUMPED for the Raspberry Pi Pico W that just went on sale today????

it's $6. With wifi. Wish I had a use case for it.

[tame shuttle]

what's the advantage over like an ESP?

[waxen wolf]

can i change speed of motors using an arduino uno?

[soft marten]

import serial
# import json

serialNumber = ''
def getSerialNumber():

    ser =serial.Serial(port='COM6', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=1,  rtscts=False, dsrdtr=False)
    
    with open('./certificate/RootCA.pem') as f:

        lines = f.readlines()
        root =  ''.join(lines)
    # print(root)
    rootcmd = "AT%CMNG=0,16842753,0,"+root

  
    ser.write(rootcmd.encode())
   

guys i am tring to write RootCA certificate to my board

when i hit enter nothing happens

my certifcate doesnot upload

and when i am using the monitor to see the chnages i am not able to run the script on the same port

is this the correct way for writting certificate to the board

[soft marten]

i close one to open other

[spiral sandal]

@soft marten i'm not a helper just a standard user why did you direct message me ? btw sorry i cannot help you on that

[opal lodge]

this doesn't have to do with your problem, but if you are going to read the whole file anyways, why not just do:

with open('.certificate/RootCA.pm') as f:
    root = f.read()
```and you might want to do `ser.close()` when you're done or instead just wrap it in a:
```python
with serial.Serial(port='COM6', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=1,  rtscts=False, dsrdtr=False) as ser:

[soft marten]

Thanks how can I read and write on same port

When I am running the script i can't run the software (nRF Monitor) to see the result i ma use software for this it shows. A long permission error

[soft marten]

when i am running both that give me this error

p raise SerialException("could not open port {!r}: {!r}".format(self.portstr, ctypes.WinError())) serial.serialutil.SerialException: could not open port 'COM6': PermissionError(13, 'Access is denied.', None,

[soft marten]

this is the software i am taking aboout i am not able to run my script that write to the port and run this software to see output at the same time

i have to close this software an than run the script and viceversa

@opal lodge

[opal lodge]

i would say that is normal, usually a resource can only be used by one process at the time
either you get yourself a physical serial port splitter (hardware), or as software on your computer which works as kind of a proxy in-between the real serial port that it would use and two or more emulated ones that your other programs can connect to instead and reach the real serial port through

[soft marten]

thanks my problem was resolved

[opal lodge]

how did you solve the problem?

[soft marten]

i have one question

how can i use multiple ser.write in the same script

    ser =serial.Serial(port='COM6', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=1,  rtscts=False, dsrdtr=False)
        ser.close()
        ser.open()
        
        securityNumber = 55
        f = open("imei.txt", "r")
        public  = f.read()+"-public.pem"
        f.close()

        with open('./certificate/RootCA.pem') as f:
      
            lines = f.readlines()
            root =''.join(lines)
    
        # f= open("private.pem","r")

        root = root.strip()
        root = "\"\n"+root+"\""       
        rootcmd =f"AT%CMNG=0,{securityNumber},0,"+root

     


        # print(rootcmd)
        ser.write(rootcmd.encode())

        ser.close()





        ser.open()
        with open(public) as f:
      
            lines = f.readlines()
            root =''.join(lines)
    
        # f= open("private.pem","r")

        root = root.strip()
        root = "\"\n"+root+"\""       
        publiccmd =f"AT%CMNG=0,{securityNumber},1,"+root

      
        ser.write(publiccmd.encode())


      
        # print(rootcmd)
       
        ser.close();

@opal lodge

i was waiting for you

@opal lodge

?????

[opal lodge]

i don't think i quite understand what you want to do, so i'm guessing here
if my guess as to what you want is correct i would probably go with something like:

    with serial.Serial(port='COM6', baudrate=115200, bytesize=8, parity='N', stopbits=1, timeout=1,  rtscts=False, dsrdtr=False) as ser:

        securityNumber = 55

        with open('certificate/RootCA.pem') as f:
            root = f.read()

        root_cmd = f'AT%CMNG=0,{securityNumber},0,"\n{root}"'
        # print(root_cmd)
        ser.write(root_cmd.encode())

        with open('certificate/public.pem') as f:
            public_cert = f.read()

        public_cmd = f'AT%CMNG=0,{securityNumber},1,"\n{public}"'
        # print(public_cmd)
        ser.write(public_cmd.encode())

[opal lodge]

and you never did answer how you solved your problem with having multiple programs access the same serial port

[soft marten]

I did not do that

what i did was arite my certificate to the board

@opal lodge

[soft marten]

this is giving me erros

errors

i think i need to close() the port and open it again

[opal lodge]

i see an error in my code since i was about to do some changes when i first though that you wanted to do something else, i'll go fix the error in there, just a sec

[opal lodge]

there, edited, can you try with the above [now modified] code again?

[soft marten]

nothing has chnaged you just using f string

[opal lodge]

i changed the variable name at the end of the first line to the correct variable name (that was my edit from my previous code)

[hybrid linden]

wow there are serial soluations

ive been having the exact some problem

at this

[opal lodge]

i don't think the .strip() in your code does exactly what you want
it will only remove different forms of space characters from the begining of the first line and the end of the last line of the file, not all the lines

[hybrid linden]

do know how to just read text with it since thats all need

i just need to sends commands to my controller

[soft marten]

Yup

How to send multiple write command

[gusty eagle]

Hello,

I'm looking for an AM decoder in the VHF range that I could bind to a microcontroller without any luck so far, anyone got some reference?

[opal lodge]

sound like you are looking for a SDR (Software Defined Radio), what kind of interface do you need for your project?
edit: a microcontroller will probably not have the horse power to do the encoding and/or decoding necessary for SDR on it's own for voice or music applications

[next charm]

Hi guys

i need help

I wanna code an 20x4 LCD display as a dino game

someone pls help me 😦

: )*

Lemme give u pics of the controller board i have and the display

@past epoch

I have made these PCB's from JLC pcb and did some extenuating like relay module, rs232, rs484, WiFi, bt, rom, lcd and keypad also I designed I am working on a bcdc project but anyways I wanna make a Dino game guys just provide me code plsss

[gusty eagle]

Thank you for your help.

It would mainly send the signal to an external deivce (hardrive or laptop/mobile) where it would be handled.

In the future automatic Squelch and scanning would be nice, but not mandatory

[gusty eagle]

Initial signal coming from an antenna

[soft marten]

do i need to use AT%CFUN=4 before using ser.export()

and than again use AT%CFUN=1 after that

bcz my script is not working regularly

its working 2 out of 10 times

[opal lodge]

hard for us to know without knowing what board and project you are working on
because i can't find any mention of it in the recent history in this channel

[soft marten]

Yes

I need to upload my device certificate to the board

I. Am using At command for that

[soft marten]

Are you free now ???

[opal lodge]

again, which board are you using?

[soft marten]

Msg me personally

I will show you the screen

[opal lodge]

can't you just say in the open channel which board you are using without needing to show your screen?

[soft marten]

It will easier to show

[opal lodge]

i don't typically do PMs on discord
and if you write in the channel someone else with more expertise in the area then i have might be able to help out as well

[soft marten]

Pls chk the msg

Let me just show you

I have no problem sharing it here but can you look it up first

[opal lodge]

look up what first?
because it will be hard for me to look up something before i know what it is

[soft marten]

I will showing you the issue

Don't wrry

Just chk the pm

I cant openly post here

[opal lodge]

because?

[soft marten]

let me just cut paste here

already wasted so much time

device name is nrf9160dk

[opal lodge]

oh, an LTE board, looks like a cool piece of kit
unfortunately not hardware that i have access to, but i can check if there is any good documentation for it on how to interact with it

[soft marten]

thanks

[opal lodge]

wow, i can't faulter them on the documentation front, other then that there is so much of it that one can drown in it
there is really a lot of documentation on this one and it seem to be able to do a lot

[soft marten]

Yup

What i need to do now just find. A way to write my certifictae to the board

@opal lodge thats why I asked you for sharing my screen

[opal lodge]

and you want to do this your self using python instead of the provided software they have for this?
i was away from the computer for a while and then i have checked out this video: https://www.youtube.com/watch?v=rMvW3HXLErk

[soft marten]

Yes

Using AT command

In a python script

Bcz i want to add it to many device

Using pyserial

@opal lodge

[opal lodge]

ah, i see, an automation kind of thing
which i guess the provided software doesn't support

[soft marten]

Yes

With software you do for the single device

Either way you need the script to make certificate

And than add it to the software

So it's better to make script

[opal lodge]

that video also talked about pushing firmware updates to the latest before you use it
is that too something you would do your self in some other way then using their software?

[soft marten]

I use software just to chk the output

Like does my script works

[opal lodge]

in the video they download certificates from their cloud portal instead
are you going to use something else then their cloud?

[soft marten]

I will upload certificate to upload also

But after this step

I need to register device first

But for that purpose i amazing the script

[opal lodge]

are you running something else on the device then their asset tracker software?
because i guess you can run other things on it as well, right?

[soft marten]

Yes

I don't know anything else

I am also new

Learning things

😐😐😐

So have you chked the script

[opal lodge]

i've been checking documentation and as well as the 15 minute video i linked above
they both say that one needs to put the device into "offline mode" by sending AT+CFUN=4 and then one should verify it by sending AT+CFUN? and get 4 as the answer if it's offline
then you should be able to send in the certificates, this is the exact position in the video that the talk about that specifically: https://youtu.be/rMvW3HXLErk?t=450

[soft marten]

Yup

Problem is with script

It runs sometime

How write it in using pyserial

[hasty zealot]

:incoming_envelope: :ok_hand: applied mute to @hallow igloo until <t:1657056275:f> (9 minutes and 59 seconds) (reason: duplicates rule: sent 4 duplicated messages in 10s).

[soft marten]

@opal lodge how to export Export-PFXCertificate without password

i dont want to send password with it as it breaks myscript i have to enter the value

[opal lodge]

it can be done but is awkward as most software doesn't support it in one way or the other, so if you go down that route you will have compatability issues for sure
instead, don't use pfx (which is really PKCS#12) certificates for this purpose

[soft marten]

Can you share resource

Thnaks

Like it will brekk my script

[opal lodge]

i only know how to use openssl to do thus, but as i said, a lot of other software will not accept a pkcs12 (pfx) file without a password, much less be able to produce such a file, and there is nothing we can do about that, it just is what it is
using openssl from pem format files you would do: openssl pkcs12 -export -keypbe NONE -certpbe NONE -nomaciter -passout pass: -out bundle.pfx -inkey mykey.key -in certificate.crt -certfile ca-cert.crt
but most software will still request a password for such a file and some will not be able to handle them at all or stop you from providing an empty password
so my advice is just, simply don't do that, write your software to ingest other formats or be able to specify a password for pkcs12 files

[soft marten]

@opal lodge i am getting these error

[opal lodge]

yeah, that example was for creating a pkcs12 file from pem files, it has to be adapted to work from another pkcs12 file if that is what you want
but wouldn't it be easier to just work with pem files or convert pkcs12 to a collection of pem files and work with those instead?

[soft marten]

i need more guidence for this

i tried somethings but failed

as for now lets i have created pfx file

and i want private and public key

@opal lodge

wait i need to clarify somethings

eariler my code was ```p

Export-PFXCertificate -cert $newDeviceCertPfx -filePath $newDevicePfxFileName -password $certPassword ```

firstly it required me to pass password that i figure it out by passing it a emptey string

    Export-PfxCertificate -cert $newDeviceCertPfx -FilePath $newDevicePfxFileName -Password (new-object System.Security.SecureString)

this is the code that i used

to pass emtey string and bypass password

[opal lodge]

windows and powershell isn't something i use or know particularly well, so can't help you with any of that

[soft marten]

np

so my public key contain these grabage how do i remve this

[opal lodge]

is that text before the pem format certificate?

[soft marten]

After

[sacred summit]

I am using micropython with an esp8266. I want to use IC2 and I have the following code:

from machine import I2C, Pin
print("Scanning")
i2c = machine.I2C(scl=Pin(4), sda=Pin(5))
print("created ic2")
i2c.scan()

I have nothing hooked up to pin 4 and 5

However the scan causes an error like seen in the image.

Does anyone have any idea of what is going on here?

[jagged hatch]

Umm is this the right place to ask about micropython?

[lilac mantle]

does anyone know a good discord/place for the hardware side of microcontrollers? im trying to get a shelly dimmer 2 running but i want some smart input on what i need

[opal lodge]

i would say yes, check out the pins for the channel and you'll see quite a bit of references to micropython

[jagged hatch]

I think python programmers can answer this question too since it’s a general one. When use timing measurements like xxx_ns(), xxx_us()or xxx_ms() does python actually runs or calculates the value with its according accuracy and the hardware (Microcontroller) is where sets the accuracy limit?

Let’s say I write pin1.duty_ns(100) the language itself can produce a clean 100nanosecond duty cycle but the microcontroller only has 500nanosecond of accuracy

[errant wigeon]

The accuracy of that is going to be largely dependent on the clock/crystal/oscillator for each micro. It resonates at a specific frequency, and from there you can time how long each cycle takes and then after so many cycles identify that so many seconds have passed. It gets really close too, but over time there is drift and each micro will have it's own small amount of drift. Most of the time that drift isn't noticeable until you check back in hours or days later, so the small duty cycles are pretty darn close to accurate.
Additionally, most things that interface with a microcontroller know that there's a bit of drift and inaccuracy, and their communication protocols are built to be resilient to timing differences within an expected limit.
Since micropython targets a wide variety of hardware to run on, as you pointed out some microcontrollers won't be able to produce a duty cycle that micropython accepts. For those instances you'll need to refer to the datasheet for the chip or board you're running micropython on to see what it's hardware limits actually are (or just do some trial and error testing if that's not an option). In order to correctly identify that a nano second has passed, the oscillator has to be able to oscillate multiple times a nanosecond and some hardware just isn't built to run that fast.

Here's some links on real time clocks, crystals, and micropython porting
http://jorisvr.nl/article/arduino-frequency
https://www.electronics-tutorials.ws/connectivity/real-time-clocks.html
The rp2040 port features:
https://docs.micropython.org/en/latest/rp2/general.html
the esp port features:
https://docs.micropython.org/en/latest/esp32/general.html
General porting:
https://docs.micropython.org/en/latest/develop/porting.html

The links are more so you can read further if you're still interested than they are necessary reading.

[jagged hatch]

I was digging into 1million ns to 2million ns duty cycle control and with increment of 100. Equivalent to 10000 to 20000 units. The target is a 4in1 ESC connected with 4 bldc motors. The frequency doesn’t need a high precision or resolution because 50hz can work, 500hz can work too. The part needs to be fine tuned is the duty cycle. With 20000 units/values, the motors were having really smooth acceleration/decelerations. Thank you for the informative explanation. It really helped a lot. I was testing on an rp2040 board. And planning to make a flight controllerish board

[floral spruce]

Also anyone got any soldering iron recommendations? I've currently got a micron 2460, which is alright but it doesn't have an adjustable tip and the very point of the tip doesn't seem to get as hot as slightly above the tip which is annoying when it comes to smaller things or tight spaces

[errant wigeon]

I don't know how many others will agree, but if you're not soldering a lot of the time, it's less of an issue than a lot of folks make it out to be. Depending on the solder you use, pick an iron at the temp that solder need.
That said, if you can splurge a bit, a temperature controlled irons are really nice.
Mine looks like a reskined version of a hakko (similar to this: https://makeitbreakitfixit.com/wp-content/uploads/2012/12/2012-12-22-02-14-20.jpg) called a tenma, but I bought it through my university when they bought too many soldering stations and I can't find the exact station I own now. But basically it's the same as linked with 'tenma' instead of 'hanko'.

I use leaded solder (as soon as I'm done with this solder I'll be using rosin core solder instead) and have a mark at the temp to use, and almost never deviate from that temp, so temp control might not actually be useful. But if you're using the iron all the time, you'll want that control for all of the various things you use it for. So while temp controlled irons aren't a make or break tool, they're very nice if you use it more and more often.

[floral spruce]

Yeah my current iron has temp control, it's mostly the non-adjustable tip that's slightly annoying

When I'm at uni the irons I use there are nice with the adjustable tips, makes certain tasks a lot easier

Also the current tip on mine seems a little weird since the very point doesn't seem to get hot, I have to go slightly above the point which can end up a little fiddly

[errant wigeon]

That might just be a byproduct of physics: the very tip has a larger surface area to volume ratio, so it radiates or conducts heat faster than heat can be conducted to it.
It could also be an issue of an old oxidized tip, or a dirty tip in general. But my iron's tip isn't the point I use to heat everything up--I use the side as well. Maybe I'm bad at soldering and that's my fault (I am bad at soldering, I avoid it when possible so I don't get practice but I don't know if this is a case of my solder skills being the problem)
Here's a good tutorial:
https://learn.sparkfun.com/tutorials/how-to-solder-through-hole-soldering
And a generic image I can't find the source tutorial for:
https://cdn.sparkfun.com/assets/c/d/a/a/9/523b1189757b7fb36e8b456b.jpg

I mostly solder while being mindful about heat transfer vs surface area vs heat dissipation
I try and get the metal 'hot' faster than the plastics and epoxies and other stuff nearby, and to do so I use the fat of the iron to help transfer heat quickly using a larger surface area to make contact between the iron and the part. After it's hot I try to add the solder and remove the iron once the solder is liquid to stop other parts from heating. If I don't heat the parts and solder enough though I get a cold solder joint and it's cloudy. I have only had one project where that was a problem though, and the real issue was that I was stupid and made the solder point the same point that the remote wire was mechanically bound to the board, so any mechanical movement and strain from the wire was stress directly on the solder joint. The cold solder point failed first, but every point of contact was bound to fail because of that design. The point being cold solder isn't that large of an issue

solder wicks, solder suckers, and flux are all amazing to fix various kinds of problems, but honestly you can get really far without any of those aids. The first aid I'd recommend is a solder wick to remove excess solder and break up joints that are accidentally soldered together (but you can use the iron and dab the joint with it repeatedly and slowly manipulate the solder to stop bridging without the use of a wick, so it's not a necessary tool if you're strapped for cash).

[oak peak]

Oddly specific question: has anyone seen/made a python library for receiving DMX512 on a microcontroller? There's plenty of transmitting libraries but I cannot locate the other way around.