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By Bhargav Veepuri
#45726 Hi, I am working on water level sensor integrating with ESP12. I am able to upload the code to Nodemcu but problems in uploading the code to ESP12 module.
I am following these connections given in this instructable.
http://www.instructables.com/id/Getting ... /?ALLSTEPS
VCC ----> 3.3V Power supply (Vout of LM1117)
GND ----> Ground of power supply
CH_PD ----> HIGH (3.3V)
GPIO2 ----> HIGH (3.3V)
GPIO15 ----> LOW (GND)
GPIO0 ----> HIGH or Floating for AT Mode (3.3V) [ * if you want to flash completely different firmware then you must connect it to ground ]

Any help is appreciated.

Thanks in advance