
Viessmann "Optolink" reading head
Description
A little reading head for reading data out off the Viessmann Optolink interface. You need 1x M4x5mm screw 1x M4 press-in thread 1x IR transmitting Diode 1x IR Phototransistor 1x 10kΩ restistor 1x 220Ω restistor 1x some wire with 4 strands I have my code for ESP8266 from: https://github.com/empty88/OptoLink
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