DIY Wireless Door Sensor
thingiverse
Transmitter parts list: - Arduino Nano - 9V battery connector - Generic 433mhz transmitter (you can get them dirt cheap on eBay) - Normally closed magnetic door switch Receiver parts list: - Wemos D1 Mini - Generic 433mhz receiver - Apple wall plug (the square one) The transmitter only turns on when the door is open. To save power, it will go in to a deep sleep mode after 60 seconds. The receiver constantly listens for the signal from the transmitter. Once received it sends a MQTT message to my Home Assistant server. The transmitter knows the door is closed after it stops receiving the the transmitter signal for a couple of seconds.
With this file you will be able to print DIY Wireless Door Sensor with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on DIY Wireless Door Sensor.