Custom board

[harry123]

https://drive.google.com/file/d/1r9MhSFT5c7hjDf6kfRWHOomkzLH9iJMF/view?usp=drivesdk Hi Everyone 

I made a custom board keeping stm32f429 disc1 board as a reference.

When I connect the the board through usb mini it's showing USB not recognised. Below is my stlink schematic.

 

[oeliks]

Well if that is the case You have to replace only chip from st-link part of the board.

[harry123]

Sorry for asking it again will my custom board work if I replace STM32F103 chip from my old discovery board and put it into my board what are the precautionary measure before replacing.

Or should I develop fully working code in my disc1 board and replace both chip into my board.

[oeliks]

I would replace only f103 (programmed chip from st-link), and this board should be able to program via cubeprogrammer or cubeide.

[TDK]

If you only replace the STM32F103, it will work. You do not need to change the STM32F4xx chip.

(Provided your board is equivalent to the discovery board.)

[AScha.3]

You can try to program the new STM32F103 to a "selfmade st-link" , see :

https://hackaday.io/project/179054-custom-st-link-v20-v21-v30

[harry123]

Thank you my board started working like disc1 after replacing STM32F103.

The problem that I'm facing  is internal ADC Is giving more noise as compared to disc1 board.

 https://drive.google.com/file/d/1rJiLHR7v1m0_u9aUBMIOs7mpG5s_3u-o/view?usp=drivesdk