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Just reflashed another STM32 and it seems to be working fine! Only thing is my program got interrupted accouple times by a hard limit error, even though endstops weren't being touched. I assume due to noise induced into the wiring but I didn't change the wiring too much...

With the boards perfectly connected as far as I can tell, still no communication. What order of things should I try? I will flash a new STM32 and try it tonight. If it helps debug, some of the weird things ive seen are the green LED randomly flashing, relay randomly flickering, all motors randomly m...

Hey HTheatre, I meant HEX file sorry. I tried swapping Rx and Tx and still no communication, I'll try new wires today. I haven't changed TFT firmware at all, both boards are running the same code as when they worked.

Will follow up.

Hi, I built a CNC router using the GRBL32 V1.0 controller 2 years ago, it has worked awesome since! Thank you so much for such a cheap but capable controller. However, it has been unused for 4 months in my garage, and I went to use it today and the ESP32 screen didn't seem to communicate with the co...

Hi, sorry for the delayed reply I have been super busy. If I changed the Z height in GRBL ($132=50), do I still need to edit the config.h file and reupload it to the control board?

Thanks! That was very informative. I am using the ESP32 and the STM32. Would the GRBL xx and yy commands allow me to make "software end stops" to make sure the machine doesn't go out of bounds? Is that what changing those does?

Hi everyone, I made a similar machine to the RS CNC, but with a T slot bed, and the dimensions are different. I am worried that there are things baked into the software for the size of the original RS-CNC that might cause me problems. For example, I run the tool>probe command and it started moving t...

Thanks so much for your help HTheatre! It ended up working perfectly fine. Thanks for all you do in this community.

Wow thank you for the awesome reply. I'll try this tonight but I am worried if they missed the switch they also could've missed any resistors/other components. There are acouple of spots on the board where stuff is missing but it's probably just so that they can use the same board for multiple produ...

Here's a picture of the missing switch and how it's wired in on the PCB:
Thanks in advance for the help!