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By josh1e
#91011 Hi, I'd like to use my esp8266 based NodeMCU to flash new firmware on my Atemga32 chip in another device. Both the Nodemcu and the Atemga32 device have MOSI / MISO & CLK pins, as well as forums showing the atemga32 device can be flashed with a generic USB programming dongle, so believe this should be possible if only i could figure out whether the NodeMCU can be told to be a programmer..

I have the pinout connection for both, just not sure what sketch / software / config I should flash on the ESP8266 to allow me to then use it as a serial programmer for the external device.

Any advice / links / suggestions welcome, thanks