The Oak by Digistump > Oak Support

Changing from Oak/Particle to generic ESP8266 code with serial and OTA updates

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bratoff:
Yep, still valid for the most part.  Once you move away from the broken Particle environment, the Oak is basically just an ESP-12F module plus power supply regulation, and with a quasi-Digispark-compatible pin layout.  The ESP8266 Arduino core now supports Oak directly so you don't need to use the special core here - you just need a 3.3v serial interface to flash code into it.  Have fun!

SHadowX:
I have converted one of my Oaks to Arduino ESP8266 Core a while back and it worked fine. But now when I reflashed it with Platform.IO and left it off overnight it would not boot anymore and upon inspection it just kept drawing about 500 mA at 3.3 V while cooking itself silly quite in a hurry.

I thought it was just bad luck but when the same happened to two of the other Oaks I was left completely baffled.

The last one was flashed multiple times, restarted and everything worked fine, but as soon as I completely removed it's supply voltage (not using the reset pin to restart it) it went into the same unresponsive power hungry state as the others.

None of them will respond on the serial port, even though I try to start them in serial programming mode by holding P2 to GND and they just sit there trying to crisp themselves with 450 to 800 mA of current at 3.3 V.

Does anyone have an idea if they are salvageable or should I just forget about them, toss them in the bin and get a more mainstream ESP board?
 

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