Arduino for STM32

if you prefer python for a start Adafruit has a stm32f405 feather express (rather pricy, but that it is a fast microcontroller has 1 Meg flash and 512 k sram, deemed generous among microcontrollers, and lots of on-chip peripherals) https://learn.adafruit.com/adafruit-stm32f405-feather-express that o...

rm0368 stm32f401 reference manual https://www.st.com/resource/en/reference_manual/rm0368-stm32f401xbc-and-stm32f401xde-advanced-armbased-32bit-mcus-stmicroelectronics.pdf stm32f401 apparently don't have hardware RNG and crypto hence, your options are PRNG https://en.wikipedia.org/wiki/List_of_random...

The usual thing is set boot0 and press reset. And that is provided that you board is properly wired for USB, e.g. that D+ is pulled up with a 1k resistor etc And that a crystal of preferably 8 Mhz is needed for HSE running on the external crystal clock in short, USB needs to be working properly and ...

I happened to be browsing around in the 'flea markets' checking out some simple 'motor driver' chips. I stumbled into a few pieces that may be worth putting here in case someone is looking for them, these are mostly simple h-bridges Shenzhen Fuman Elec TC118S https://www.lcsc.com/product-detail/Moto...

thanks would try that, I noted that for R1 it has a 'special function'. In practical terms, connecting a resistor across from the output of the not gate to the input would in itself cause it to oscillate. i'd guess that is the reason for the high R1 value, and that the crystal I'd guess provides a l...

thanks I'd try with higher value for R2 and R1, but that if 10 M works for R1, my guess is it'd likely oscillate even if it isn't there, but I'd guess that'd vary. for R2 I'm thinking perhaps it should only be in series with the crystal, but that according to the wikipedia article, it reduce the cha...

as stm32g030 don't have HSE crystal input i.e. OSC IN and OSC OUT I tried to make one using the Pierce oscillator circuit https://en.wikipedia.org/wiki/Pierce_oscillator that not gate is simply a 74lvc1g04 single not gate I bought a handful from the 'flea markets' https://www.ti.com/lit/ds/symlink/s...

TDA2822 looks interesting https://www.st.com/resource/en/datasheet/tda2822d.pdf https://www.st.com/resource/en/datasheet/cd00000134.pdf seemed quite available in the 'flea markets' as well https://www.aliexpress.com/w/wholesale-tda2822.html and a good thing is the pretty low supply voltage LM386 it ...

btw, I'm not sure if every one is seeing the same, but that currently STM32G431 'pill board' https://www.aliexpress.com/item/1005005303669884.html seemed to be priced at modestly low(er), as compared to some simpler boards or chips if may be worth grabbing a few for to try them out etc. the good thi...

BigTreeTech posted them here https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-V1.0/tree/master https://github.com/bigtreetech/BIGTREETECH-OCTOPUS-V1.0/blob/master/Hardware/BIGTREETECH%20Octopus.pdf So if you have the board, you can check in the repository to see if they match, it is fairly 'easy' ...