After programming, you can plug your ESP module correctly on the ESP socket of the relay board. In the next step, you can operate the system using a 5-9V DC power source (12VDC maximum). Wi-Fi Relay & ...

Using this boot ROM we can push our programs to the flash memory. A good way to make use of this is to connect a switch from GPIO0 to ground so you can put it into program mode at will by holding ...

It’s tempting to just stuff a relay in the ... but a 3.3 V TTL level serial connection. I use the MM232R module, ... esptool.py –baud 460800 write_flash –flash_size=detect 0 esp8266 ...