Accidental provided reverse voltage to toolboard 1LC

[Ravs99]

Hi everyone. So silly mistake, I accidentally switched ground and Vin connection on the DUET Toolboard 1LC. I am using a DUET3 Mini mainboard at 24V Vin.

While I had no motors, heaters, etc connected to the toolboard or mainboard, the reverse voltage popped a component on the board with smoke. I'm guessing it is one of the voltage regulators as the pop and smoke came from the accelerometer side.

I had the wiring on the CAN bus connected and I'm wondering if the CAN connector/functionality on the DUET3 Mini Mainboard would be affected in anyway? For the toolboard I'm just going to buy another one but I wanted toknow if there is anyway to know if the CAN bus on the DUET3 Mainboard would be affected (besides just trying a new toolboard)

Thanks.

[jay_s_uk]

@Ravs99 if the mini5 still works you should be fine

[Ravs99]

@jay_s_uk Yeah, everything else on the mini5 is still working. I guess I will try a new tool board and report back if it's still not working.

[droftarts]

@Ravs99 If you post a picture of the blown toolboard, we can advise on possible repair.

Ian

[Ravs99]

@droftarts Yeah, I can do that when I get a chance next time tomorrow when I'm, back at my lab. I just replaced it with a new toolboard for now and it worked fine.

[dc42]

@Ravs99 the CAN bus drivers are highly tolerant of over voltage so the Mini5+ will be fine.

The failed component on the tool board is most likely the TMC2209 driver chip.