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ESP8266 - ESP-01 Wi-Fi module Upgrade Firmware
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Lessons learned:
Use an external 3.3V power source or build a voltage divider using resistors to power the ESP8266, the Arduino Uno will just not deliver enough juice.
Make sure to remove the RESET from GND on ARDUINO or MEGA2560 BOARD
Use an external 3.3V power source or build a voltage divider using resistors to power the ESP8266, the Arduino Uno will just not deliver enough juice.
Make sure to remove the RESET from GND on ARDUINO or MEGA2560 BOARD