Well this was fun. Just tried plugging the 12V in again, to see if anything changed, and the magic smoke came out of the chip near the 12V power plug. I assume that’s the voltage regulator. And I had such high hopes for this board.
I’ve currently burned 3 different CHGIC chips on boards. I’ve been running the board powered off a power supply set to 18V. I have other boards booted at the same time, and have booted up all of these boards on the same power before. There are different ports connected, but none of them are being used. I believe the trend I noticed right before they break is that they power on, but are unresponsive. I power cycle them and they continue to be unresponsive. Then I plug them in a 3rd time, and the CHGIC chip pops and smokes.
Is there something I can do? I can’t have boards continuing to break. And from the last message, it sounded like his board burned from even just 15V.
My BBB no longer works from the barrel jack; I plugged it into a 12V switching power supply and the smoke escaped (see picture). It still runs from a 2S LIPO.
Can you check how much current it draws from the lipo ? Had a feeling the motor drivers , randomly , short themselves to ground causing a large amount of current to flow from the barrel via VDC into the CHGIC and from there to VBATT ( which is connected directly to the two motor drivers ).
This seems to be more than the CHGIC can handle without blowing up.