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Why not be able to toggle the original ESP32 on/off with the new transplant so you don't have to take it apart if there is a must have firmware for the 300S? Just have the XIAO drive a N-MOSFET or NPN (with the right resistors) that pulls EN to ground. When it doesn't pull the pin to ground, the XIAO just stays quiet (no ucontroller TX/RX overriding) and waits.
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Why not be able to toggle the original ESP32 on/off with the new transplant so you don't have to take it apart if there is a must have firmware for the 300S? Just have the XIAO drive a N-MOSFET or NPN (with the right resistors) that pulls EN to ground. When it doesn't pull the pin to ground, the XIAO just stays quiet (no ucontroller TX/RX overriding) and waits.
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