What is it?

This is a Motion Detector based on the RCWL0516 radar sensor module and an ATTiny85. It comes fully assembled and can detect movements in a range from up to 5-7m and almost 360°, depending on the environment it is used (Industrial environment is not recommended). It can detect movement through doors and thin walls and can be hidden completely.

With the module you can switch a load of 7V-35V with max 3A. The module consists of a ATTiny85 which regulates the timings. On movement by default it fades in the load (PWM) and stays on for 30sec. Any movement within this time will reset the timer and after that time with no movement it fades out the load.

The input voltage is as well the input for the board and the output for the load.

Why did you make it?

A friend asked me for a power supply for an LED Strip she bought at aliexpress and for a switch. I told her I can make it a motion detected switch with fading and she said "cool", so I build this.

What makes it special?

• it is Radar (microwave)
• it can be hidden without being visible to anyone
• it has an ATTiny85 which can be programmed via PINs if you have a programmer. The programmer can be a Arduino.
• the RCWL0516 is just the module I used because I really like it but you could also use a PIR or any other sensor with 3.3v to 5v trigger pin

All informations about that project can be found here: https://github.com/Informaticore/programmable-motion-detector

Note: In this version I forgot the drop-down resistor for the MOSFET but as long as you do not touch it, it works just fine :)