However, I do not understand why. Because in order to activate the 1/32 microstepping mode, M0, M1 and M2 must be in the high state. Since it is so hard to solder the pins because they are located in a difficult area of the board, I figured I could just sold everything together and they all should be in a high state this way.

When you solder all the pins together it's similar to soldering them in series if you solder them one by one it's like soldering it in parallel. you can't solder everything together because they will short circuit next to each other, they need to be separated, glad it worked out!

Anyway, thank you very much for your help, it worked.

Hello !

The code and soldering are here: https://imgpile.com/i/u0zYLP

Hi, I've checked with our engineers and it appear your soldering is been done wrong, please take a look at the following picture: https://imgpile.com/i/u0gOl4

There are jumpers that can be shorted to create different micro-stepping function but by the picture you've sent me it looks like you've soldered the all together, only one need to be soldered at a time and not all of them together.

Id suggest to remove some of the solder paste and make sure to solder one jumper at a time.

Edit: you can also take a look at the TI chipset datasheet: https://m5stack.oss-cn-shenzhen.aliyuncs.com/resource/docs/datasheet/module/DRV8825_en.pdf

it explains how the jumper works and how to control different modes through it.

Hope it can help,

~ Roni

The code and soldering are here: https://imgpile.com/i/u0zYLP