I was running a motor with a basic esc, but when I increased the speed the ESC stopped and so did the motor, and my fathom board started smoking and the power light went off. There is no visible damage, but upon plugging it back in(to both 15v and 5v) it began smoking again even without the motor running.
These were the components that started smoking:
LM2776 from the Supply Inverter for Op-Amp circuit
ST490AB from the TTL to RS422 circuit
The fathom board was hooked up to the same 15v power as the motor (in parallel obv) The raspberry pi was hooked up to this power as well via a voltage converter. The raspberry pi’s ground, 5v and rx gpio pins were hooked up to the fathom board in their respective places.
Any ideas what could cause this? If more info is needed I can supply it.
Edit: After plugging the board into only 15v power it turned back on, but the MC7805 component heated up a considerable amount and gave off a burnt smell. (no smoke, and the polarity was correct btw) Also the LM2776 component heated up slightly as well.
Edit 2: It might have been caused by something to do with the pwm controller I am using currently (https://www.adafruit.com/product/2327) if that helps at all