Use this forum to chat about hardware specific topics for the ESP8266 (peripherals, memory, clocks, JTAG, programming)

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By Bazingo
#88440 Hello,

I have thus far been successful in uploading and running sketches on the ESP12. I have been using a NodeMCU to flash the ESP12 through the arduino IDE following schematics I found online. All the sketches work perfectly when the ESP12 is connected to the NodeMCU flashing jig, but I just can’t seem to get the ESP12 running on its own by simply connecting it to 3.3v VCC and GND. I have read on the forums that GPIO15, CH_PD, GPIO2 etc should be pulled up or down in order to boot into the sketch properly, but I can’t seem to understand exactly which pins need to be pulled high or low in order to boot in standalone mode (not in flashing mode). Can someone please point me in the right direction?

As it is now, the ESP12 won’t boot to sketch with just the VCC and GND connected only.
Thanks