Yo! This project is still a Work In Progress. Instructions, board layouts and BOM might change!
MyMasterSensor
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Attribution-ShareAlike (CC-BY-SA)
Created:
7 years ago
Updated:
7 years ago
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This is my project to a all in one sensor, it contains interface to:

  • LM393 Light Level
  • Door Sensor
  • HC-SR501 Motion Sensor
  • DHT22 - Temperature and Humidity Sensor
  • Switch

Controlled by a Atmega328p-au and NRF24L01 SMD

Powered By 3 AA batteries, split in 3v and 4.5v, or if you prefere only 2 AA (3v). You can set the power jumper to safeguard the RF Radio. This interface is the best way to control a PIR sensor and ensure that the power feed to the PIR is inside acceptable range. (please see https://forum.mysensors.org/topic/6511/hc-sr501-3-3v-randomly-sends-tripped-when-radio-is-on/ ), see images to more information.

Work still in process... comments and recommendations are welcome.