Pictures of your setup helps.
Also try to switch rx/tx is worth a try…
Did set up your vesc to the right baudrate and selected uart?
That’s nothing special by the way and can be found in the existing metr threads.
Baudrate set to 115200 is correct for old Metr modules. With Metr Pro the baudrate gets auto detected.
As @Andy87 said make sure UART is enabled in VESC settings and TX/RX connected in the right order. The Trampa VESC6 has it swapped compared to the 4.12 hardware.
I updated the firmware. Does the baud rate matter on the metr pro?
It now works on both sides, but on master side voltage readings are random. And in both sides, modes are only applied to the respective side.
So, I spent a large part of today figuring this out. @pookybear was super supportive and helped me a ton. I can’t express my gratitude enough!
It seems that the boot loader is broken on one side, and can’t even be flashed with SWD because the rails seem to be (internally) shorted… I’ll have to chat with some wizard-like-being to see if there’s any hope for this to be restored.
So I just found out my metr works fine on the slave, but my davega worked fine on the slave as well, and now my davega doesn’t work on the master, so both davega and metr do fine on slave and don’t work on the master,