MicroPython Forum

It is best if possible to avoid global variables where possible. The cleanest way to have many functions access a common variable is to use a class and then use the prefix self. before any variables that you want to be accessible from all the other functions/methods of the class. see https://www.tut...

I have used this driver and it worked fine for me

Lobo port also has access to the ADC2 see https://github.com/loboris/MicroPython_ ... o/wiki/adc

You will need to read the docs to see the restriction on ADC2

@OutoftheBOTS This is really a good idea. But I don't know how to create function in C, I just add the .py file to '../micropython/ports/stm32/modules' and make the micropython firmware. Is there any documentation I missed? https://micropython-dev-docs.readthedocs.io/en/latest/adding-module.html ca...

Meekdai wrote: ↑

Mon Apr 29, 2019 1:10 am

@OutoftheBOTS This is really a good idea. But I don't know how to create function in C, I just add the .py file to '../micropython/ports/stm32/modules' and make the micropython firmware. Is there any documentation I missed?

https://micropython-dev-docs.readthedoc ... odule.html

Many years ago I transplant the GRBL code to STM32F1 and it works well. I think micropython can do the same. Any MCU that is capable of running micro-python is capable to driving many steppers at 1 time. Interpreted Micro-python has advantages and disadvantages compared compiled languages like C. O...

It is the first time that I have seen this board show up anywhere and gaven't seen a schematic for it yet. I did order 1 as I am a lover of small form factor STM32F4 boards as they r capable and easy to program. I have asked the vendor if he can supply a schematic, he he doesn't then when it arrives...

This very well priced STMf407VGT board just poped up on a search https://www.aliexpress.com/item/STM32F407VET6-STM32F407VGT6-STM32-System-Board-Development-Board-F407-Single-Chip-Learning-Board/32985219862.html?gps-id=pcDetailBottomMoreOtherSeller&scm=1007.13338.112237.000000000000000&scm_id=1007.13...

If you where super keen to make a good working 3D printer firmware in MP I think the best way to do it would be create C functions that control the stepping (acceleration, speed and distance stepped) via HW interrupts then wrap them up so that they can called from python.

My hope is that the RMT module would help for this purpose on the ESP32 port; would you agree OutoftheBOTS? RMT is certainly probably a much better way to do the steper motors than the shitty wirk around that I used especially since it doesn't block the CPU during transfer I usually run my steppers...