#long RGB LED strip powering
limpid topaz
Yes
limpid topaz
link to the best stores you are buying things from
The store I use to buy this is cheap that's why I can buy them at low rate
Best store is going to take a lot of money
I have already used most of my pocket money
inland otter
i am just trying to find you a power supply. You might be able to use a computer power supply with 5V output, but you need to know how to identify the 5V line and get the power to come up (extra wiring needed). Maybe go to the store and say you need a high-amperage 5V supply and see what they say
you have all the info you need now. Buy some heavy wire too (like 12 gauge). See https://learn.adafruit.com/adafruit-neopixel-uberguide/powering-neopixels#giant-power-supplies-2894491 and https://learn.adafruit.com/adafruit-neopixel-uberguide/powering-neopixels#distributing-power-2894492
limpid topaz
Ok
I got it I have to use 5v adaptor
But I confused with amps
Does the adaptor which I want is exist or not
Idk that
inland otter
here is a 5V 10A supply: https://www.adafruit.com/product/658. Laptop-brick sized
and you are familiar with computer power supplies too, I assume, in desktop computers
limpid topaz
Yes
inland otter
and there are heavy-duty many-amp 5V supplies. Be careful with these: if you short them you can cause a fire or cause melted metal, etc.
ask at the store
If you run things not a full brightness you can get away with something less than 36A
it's not going to be a simple wall plug adapter
limpid topaz
and there are heavy-duty many-amp 5V supplies. Be careful with these: if you sho...
🙂this is the thing I am scared of while i was choosing electronics and electrical as my stream.
inland otter
you're not going to learn without trying, but you need experience. Won't your teacher help you?
limpid topaz
you're not going to learn without trying, but you need experience. Won't your t...
Idk, my iot teacher can't help in this.. you can easily find out this by looking at them, I tried my "network Analysis and Synthesis teacher" but I got confused bcus he was telling thing like take out the power consumption and etc. and seem like he don't know much, only one teacher is left my "digital system design" subject teacher
I will try to ask him tomorrow
inland otter
someone with an electrical engineering background. Friends who dabble in electronics (and know what they are doing) would be helpful too
even the people at the store may be helpful
limpid topaz
I don't know any person like this.. that's why I asked it on discord
limpid topaz
even the people at the store may be helpful
They are just like give us money and we will made this for you, I want to made it by myself
inland otter
so they know how, thjen they can provide advice on things to buy, I would think
but ask your digital teacher yes, is this college or high school?
inland otter
do they teach electrical engineering?
limpid topaz
Yeah!..but I am electronic and communication student
inland otter
well, the digital design teacher should know enough. But you need a basic electricity/electronics course: voltage, current, Ohm's law, etc.
could self-study on this
you could use a multimeter too, to measure voltage and current
limpid topaz
well, the digital design teacher should know enough. But you need a basic electr...
I know basics stuff and currently learning 2-port network and about flipflops (but never used anything in real life)
limpid topaz
you could use a multimeter too, to measure voltage and current
I don't have,now Ig I have to buy one!
inland otter
i have to get back to work, but I think you have enough info to proceed, no?
inland otter
no no, do not connect the 3V and 5V together!
limpid topaz
Is this wrong?
inland otter
yes
limpid topaz
Ok
inland otter
you'll fry something
limpid topaz
you'll fry something
So this is the reason I got my adaptor fried?
inland otter
maybe. I'm suprised you didnt' fry the board
limpid topaz
🥲...thank god.
I don't know but bored was getting powered from it. Without connecting power to usb port
inland otter
one way to do a level shifter is to power (only) the very first RGB with 4.3V, through a silicon diode. It will then level-shift its DATA output to something above 3.3V. But that makes the very first LED be a little dimmer. O you make it a "zero-th" LED that you don't show.
you need more basic electronics/electricity study, somehow
limpid topaz
you need more basic electronics/electricity study, somehow
You are speaking like my teacher now!
inland otter
but I expect them to teach you! That's what you're paying them for
see link above for the level-shifter trick I just descrigbed
limpid topaz
see link above for the level-shifter trick I just descrigbed
Yeah, it seems nice and easy
inland otter
good luck with all this!
limpid topaz
but I expect them to teach you! That's what you're paying them for
Maybe I am weak at study too.
limpid topaz
good luck with all this!
Thankyou, btw what do you do?
limpid topaz
<https://danhalbert.org>
Cool!.. your work feel nice to me
And one more thing your website is not responsive and just fair, I can do it better. For your
Whenever you want, I am good in web development
limpid topaz
nope sorry
Ok, I am not charging anything btw.. I just love to do things
limpid topaz
it's what I want -- I know it's simple
I like minimal things to
Is this connection fine?
inland otter
the top one, yes, but "Level Shifter" is rather unspecified in that diagram
"Additional Injection" are going to be further connections at various points along the LED chain (at least at the far end, and probably at every 100, 200, or 300.
limpid topaz
"Additional Injection" are going to be further connections at various points alo...
Can you explain it with circuit diagram, pls
and one more question, does supply 5v to 3.3v esp8266 is fine? + How to choose a level shifter?
inland otter
and one more question, does supply 5v to 3.3v esp8266 is fine? + How to choose a...
the nodemcu has a 5v to 3.3v regulator to drop the 5v USB power to 3.3v. BUT if you power the 5v pin, you need to check that you won't be backpowering the USB port with that 5v: that could damage the computer that the nodemcu is plugged into. Sometimes there is a diode to prevent that. "NodeMCU" is kind of generic and you really need to look at the schematic for the exact board you have.
the link I sent you about level-shifting NeoPixels talks about two different level shifters. One is just an IC you may be able to get locally
or you can use the extra RGB LED trick I wrote about above
as for "Additional Inejction", the "Additional" (red line) should be attached to the +V line in the LED string at several points: at the beginning, at the end, and maybe at intermediate points. Same for GND. What you could do is attach it at one end, then measure the voltage there and at the other end. If there is a significant different (like more than .1 or .2v), then attach it also at the other end. Then measure the voltage at around the 300th LED, and see again if there is not too much of a difference. Add a connection in the middle if necessary.
inland otter
I found this
This is quite a good overview, it appears
limpid topaz
🙂, I can't I don't have that stuff
inland otter
long RGB LED strip powering
limpid topaz
you should be asleep, no?
Nope, I sleep like 2 days awake and then I sleep
I mostly do learning software development at night
and I found that 10 amp would be sufficient
raw flicker
Despite the ridiculously cheap price, they're very stable, fine for feeding the LEDS.
limpid topaz
I'm using these guys to convert power:
https://www.amazon.com/Converter-Voltage-...
Oh!..it look nice
raw flicker
I have a 135 watt power suopply feeduing my system, so two of these are enough. For the setup proposed with 180 watts, you'd want a minimum of three of them.
limpid topaz
Btw don't buy things online for electronic, local vendors sell the same thing at cheap rates
raw flicker
Where I live, there are no local vendors. I'm way out in the back end of beyond in rural Oregon. 🙂
limpid topaz
I have saved 12usd!..
The led strip online was 18dollar something
For 5 meter
I got it in $6
raw flicker
That's great if you live near a supplier. It's a 70 mile drive to the nearest large city (Portland), so the cost of the trip is far larger than any savings I might get.
inland otter
SageBoy is near a large Indian city - lots of local parts stores
limpid topaz
SageBoy is near a large Indian city - lots of local parts stores
I am still far, if I was near I will get them in $2.5 something
It is cheap in Delhi
Moreover nodemcu and Arduino r3 is just $3 -$4 something
raw flicker
Anyway, ignoring cost analyses of online vs "bricks-and-mortar" stores, that should get you going for a solution.
Also, if you haven't already done so, experiment with current limiting the LEDs. I run 750 of them off that 135W power supply, by limiting them to 20ma / LED. Even at that reduced brightness, power white (85,85,85) is still bright enough to be acceptable. And it drops the power requirement by a factor of 3.
inland otter
the first video SageBoy pointed to above does a good job explaining (and showing) that. Nice overview with multiple power supplies of various capacities
limpid topaz
Anyway, ignoring cost analyses of online vs "bricks-and-mortar" stores, that sho...
Today , I am going to get a new power source.
raw flicker
If I were to budget for 60 ma / LED, I'd be looking at 45 amps total draw on the 5V line, wich would require a 240 watt power supply minimum, maybe even bigger, because the buck converters are nowhere near 100% efficient
limpid topaz
Btw, my mind is saying to do some experiment with 5v 2amp with power injection
raw flicker
Just ensure you completely separate the 5v runs on the strips, so the 5v outputs from the different buck converters are completely isolated.
limpid topaz
Just ensure you completely separate the 5v runs on the strips, so the 5v outputs...
Ok
@inland otter thankyou so much,
If you need any help in website related work I will help you.