# KS0422 keyestudio micro:bit PIR Motion Module

![](media/image-20260119100717738.png)

## 1. Description

This keyestudio PIR motion module is fully compatible with micro:bit control board.

It is mainly composed of a digital pyroelectric infrared sensor, which is a digital signal output device.

This sensor has built-in filters, strong anti-interference, low voltage and micro power consumption.

The detection distance of the module is 3-5 meters.

The detection angle in the horizontal direction is less than 80°; the detection angle in the vertical direction is less than 55°.

There are total 6 rings on the module. Note that two G rings, two V rings and two S rings are separately connected. G for ground; V for 3V; S for signal pin(0 1 2).

When using, connect the module to micro:bit control board using Crocodile clip line.

Once detecting someone moving nearby, the signal pin of micro:bit main board will input HIGH level; LED on the module lights.

## 2. Technical Parameters

- Working voltage: DC 3.0-3.3V
- Working current: 100mA
- Maximum power: 0.5W
- Output signal: digital signal
- Detection distance: 3-5 meters
- Detection angle: less than 80°in the horizontal direction and less than 55° in the vertical direction
- Operating temperature range: -30℃~ +80℃
- Dimensions: 31mm * 27mm * 6mm
- Weight: 2g
- Environmental attributes: ROHS

![image-20260119100954967](media/image-20260119100954967.png)

## 3. Connection Diagram

![](media/image-20260119101026477.png)

## 4. Source Code

Download code : [Code](./Code.7z)

![](media/image-20260119101101794.png)

## 5. Example Result

Connect well the module, then send the source code to the micro:bit main board.

When detecting someone moving nearby, the LED matrix on the micro:bit main board will show a heart shape icon, and led on the PIR module lights. Or else, it will show another image and led turns off.

![](media/image-20260119101141400.png)