Support for ATmega 328P

[stiff girder]

Hi, I am trying to build a quadcopter flight controller using ATmega328p MCU with brushed motors.
Still, I don't have an idea whether this is doable or not.
Does Betaflight support ATmega328p?

Highly appreciate the input of this community.

[calm nymph]

Betaflight is a long descendant of MultiWii, which was pretty much the first open flight controller firmware available, and did actually run on 8-bit arduino hardware. Everything since then has been on STM32 MCUs with 32-bit architectures

https://betaflight.com/docs/wiki/getting-started/introduction#whats-different-from-other-fc-software

see diagram and explanation here

Betaflight will not run on an ATmega328p

[stiff girder]

I understand now, thank you for your clarification. I will check MultiWii for more information for my project.

[rose harbor]

I once made a drone on multiwii and adruino

Why do you want build drone on a arduino?

[stiff girder]

Was that project successfull?

[stiff girder]

There is not a specific reason. I thought using Arduino with brushed motors would be a good entry point for designing flight controllers. Also the cost is low. Do you think this is a bad decision?

[rose harbor]

with problems but yes

[rose harbor]

micro drone?, and what esc

idk it's a good decision or no but be careful of weight. I firstly also built with brushless motors but drone overall had too much weight

so I built 5inch

(tip: use arduino promicro if you have, on atmega 32u4)

[rose harbor]

I can send you what I made finally

that was a year ago

[stiff girder]

Yes, I can find that.

[stiff girder]

Appreciate it if you could share. 🙂

[rose harbor]

https://drive.google.com/drive/u/0/folders/1Az4HXAzd-PY7auXwnIDaCG_1g50MM-AR

ahh half year of work

you are going to use IBUS or PPM?

[stiff girder]

this is great thank you.

[rose harbor]

here is video and presentation in link, I was doing it as a "exam" in school

[stiff girder]

I plan to use brushed motors like 8520 coreless motors (Assuming it is possible to use them for drones) and control the speed using A2SHB MOSFET. I have already made and tested the circuit part for speed control.

[rose harbor]

okey, have you good lipo for this?

[rose harbor]

I was doing with 8520 and similar mosfets but like I said, my construction was too heavy

and flying like sh...

[stiff girder]

Not at the moment but I am planning to buy, still not finalized on what specs to use.

[rose harbor]

sure, what part u have now?

with radio controller included

[stiff girder]

What is the airframe you chose?

[rose harbor]

something cheap from ali, I'll find a picture

[stiff girder]

I have built an x-axis structure with 2 motors. I started writing code with PID control(Most of the parts are taken from crazyflie-firmware). My initial plan was to test it for one axis and extend it. But It was not successful. That is why I raised my question here. I will send some photos of my structure.

[rose harbor]

so you don't have any radio controller, drone parts etc.

@stiff girder

[rose harbor]

if you don't have experience with coding it'll be useless to write code from 0 I think

[stiff girder]

Yes, I agree with you. I will try MultiWii

[rose harbor]

so you have arduino promicro and gyro?

mpu6050 gyro is probably the most affordable

show on pictures all your gear what you have now to be use for drone

then I'm going to create the simplest way to build the drone

and show me your circuit with motor and mosfet what you tested

[rose harbor]

btw you know it's easier and better if you just buy a aio for micro drone?

I don't see any point in building a drone on Multiwii/Arduino other than as a hobby

[stiff girder]

This is my one-axis simple setup, Still, I am using UNO. But I plan to use promicro.

This circuit is used to control the motors

[rose harbor]

k

[rose harbor]

promicro use if you want do it with multiwii

because there may be problems using the atmega328

also the big UNO board won't fit in small drone

[stiff girder]

Is that fine to use promini?

[rose harbor]

promini is on atmega328, so as I said

sometimes there is a problem with it, sometimes not

the problem what you may come across: "one motor is always producing less thrust compared to others causing that to continuously yaw around that motor". I came across this sometimes, I don't know why it happens, but on atmega32u4 the problem did not occur

[rose harbor]

btw makeshift if you do not want to buy a controller right away, you can connect another module such as wemos d1 mini with wifi module and control from a phone, I did it that way, it is difficult to control it, but for testing ok