I recently just moved to the great Alaskan tundra and have been trying to get my MPCNC put back together since the move and have just been running into more and more problems. I guess I wasn’t too surprised that a lot of the mechanical components were damaged after being transported 4000+ miles, but what’s been really stumping me for the last few days is that I can’t seem to get my miniRambo to respond at all. I’ll give it power and try to connect with Repetier, which it does and all the LED’s turn on. But when I try to send commands, like M119, it hangs up and gives a “1 command waiting” message, then after 30-60 seconds it’ll give an error saying “communication timeout - reset send buffer block”. If I don’t send any commands and just let Repetier do it’s thing, it’ll give this same error in the log every couple of minutes.
I thought maybe if I reflash the firmware that would solve things, but Arduino also fails to upload giving the error message “avrdude: stk500v2_getsync(): timeout communicating with programmer”
I’ve tried different firmware versions, different Arduino versions, different USB cables, and different power supplies and get the same results every time. Google hasn’t led to much other than me thinking either the bootloader & firmware got wiped somehow OR the chip on the board is fried. All the fuses are still intact on the board, so I’m hoping that it’s not the chip being fried.
Any recommendations on what I could test next would be greatly appreciated.