Chat here is you are connecting ESP-xx type modules to existing AVR based Arduino

Moderator: igrr

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By Frederico C Wilhelms
#73045 After looking through the forums, did not find a way to upload the ESP connected to an Arduino via the Arduino itself. Either using esptool or Arduino IDE.,
Have this configuration: Arduino IDE (linux) <-> USB (Serial0) MEGA 2560 (Serial3) <-> ESP12E ..

It is mounted on a shield, and I can't get access or rewire to the ESP's Serial.,

Is there some sketch to make the Mega(Arduino) a ESP uploader/flasher??