Hi!
I made a mistake (first day!) and overheated the step-down voltage regulator by hooking up servo directly to Vin. The photon seemed to be dead (no lights at all) until I unsoldered this regulator. Now, I can only power the board using 3V3 pin, but photon works extremely unstable with that method of power supply.
So, the question is the next: can I make a jumper at a former voltage regulator place and use the board with the ‘conventional’ power supply?
The voltage regulator is essentially delivering 3V3 to the photon. Where are you planning to jumper and what voltage are you feeding?
Now I’m supplying 3.7 V to the 3V3 pin. I want to do next jumper:
=>>>>>>>>>>=
… =
=… =
You probably damaged the Photon by delivering 3V7 to a 3V3 pin. I’m surprised that it is still working.
3V3 pin is 3.6 V (max) tolerant so I did not exceed the limit significantly to damage it.
What’s about the jumper proposed? Is it applicable?
Hey there @lukasinho -- Max definitely means maximum so anything above will likely cause damage.
So, the question is the next: can I make a jumper at a former voltage regulator place and use the board with the 'conventional' power supply?
You should be able to deliver regulated 3.3V power to the 3V3 pin and have the board function as expected (unless, of course, it has been damaged).
But why not just replace the regulator.
It’s a Richtek RT8008-33GB
I will try to find it or similar one in local shops. Ordering it online is very expensive due to the shipping costs (new photon is cheaper)