dled by the PSU. It was an ‘odd’ design at its time but it had a profound impact on the industry. At the time processors were designed one function per chip. ... 17 Library (#include <Adafruit_MCP23X17.h>) bekomme ich (auf dem UNO) nicht zum Laufen. Vielleicht au... für die Relais schalten (getestet)
GND : gemeinsame Erde für alle (auch Arduino, 5V, 12V, 24V)
COM :