Svarun123

Thanks for your reply; Would it be possible to do it using another Arduino-based microcontroller as the intermediary in my example? An ESP32 for instance? What I'm really only looking for is whether it's possible to upload code to a Teensy 4.0...

Is it possible to upload an Arduino "INO" code file to a Teensy 4.0 microcontroller via another Teensy (or any Arduino microcontroller), using SPI or I2C and the Arduino IDE v2.3.3? So: I'm aware that it's possible to do using regular...