Window Sensor / Door Sensor / HomeMatic
Description
Here I'm sharing my project of a DIY HomeMatic window sensor. It is based on the sketch by pa-pa: https://github.com/pa-pa/AskSinPP/blob/master/examples/HM-SEC-RHS/HM-SEC-RHS.ino It is designed for an Arduino Pro 3.3V with a cc1101. Next to it there is space for housing a battery pack with two AAA batteries. The sensor works with a 4x2 mm magnet in the bottom part and a reed switch in the upper part.
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