Delonghi ECAM 23.120 Blinking Steam Button Issue

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Add an external 5V power supply

If the programmer does not support it, connect an external 5V power supply to the microcontroller
Theoretically, you could plug the mains connector, but you would have unprotected live high voltage, so please don’t do that
An easy hack consists in using a USB connector: the red cable is 5V and the black is GND
Solder USB power lines to the pads (7) GND and (4) VDD
Plug in the USB connector to a main power adapter or a computer

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