Sonoff Switch


Other projects

RS-232 D-Sub 9-polig pin layout


Die Farben beziehen sich auf ein vorhandenes, altes Kabel einer Maus.

RS-232 pin 2: Rx blue, position 4, receive data
RS-232 pin 3: Tx white, position 5, transmit data
RS-232 pin 4: DTR green, position 1, data terminal ready
RS-232 pin 5: GND brown, position 2, ground
RS-232 pin 7: CTS orange, position 3, clear to send, Sendeerlaubnis

Sonoff pin layout


The Sonoff pins, starting from the push button:

pin 1: 3.3V
pin 2: Rx
pin 3: Tx
pin 4: GND
pin 5: GPIO14 (we won’t use this pin)




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