Introduction

The rotation sensor is a simple potentiometer module with rotation angle of 0~300 degrees. It outputs analog signal and work well with maincontrollers such as micro:bit and Arduino. And the sensor can be used for not only Mind+ and makecode graphical programming but also non-programming projects.

Specification

Power Supply: 3.0-5.5V
Current Consumption: (Max)1mA@5V
Interface Type: PH2.0
Rotation Angle: 0~300°
Dimension: 26mm×39mm/1.02×1.54"
Signal Type: analog signal

Pinout

NO.	Label	Description
1	GND	Power +
2	VCC	Power -
3	SIGNAL	Analog Signal Line

Usage Description

There is an arrow marked on the rotation module, adjust the angle of the konb to control the output analog signal.

Working Principle

The rotation sensor is actually an normal potentiometer, which is used to adjust voltage (including DC and signal voltage). For potentiometer structure, there are two fixed ends on its rheostat. Adjust the shaft or slide handle to change the position of the moving contact on rheostat and thus change the resistance between it and either fixed end, and the voltage varies.

Application

1.Variable Speed Fan

Description:

Rotate the konb to different angle to control the speed of the fan. Clockwise rotate to increase the speed; counter-clockwise rotate to decrease it.

Components:


BOS0001 Rotation Sensor	BOS0021 Fan module	BOS0035 Mainboard-3IO

MBT0039 Micro:bit	BOS0040 Micro:bit BOSON Expansion Board

Tips: micro:bit and Micro:bit BOSON expansion boards are used in the programming example.

Non-programming Sample

Connection Diagram:

Programming Sample

Connection Diagram:

Flow Chart:

Mind+ Sample Program:

Makecode Sample Program:

Demo Videos:

Non-programming	Programming

2.Make a Lamp

Description:

Use the rotation sensor to control the brightness of the LED module. Clockwise rotate to brighten the lamp, counter-clockwise to darken it.

Components:


BOS0001 Rotation Sensor	BOS0017 LED module	BOS0035 Mainboard-3IO

MBT0039 Micro:bit	BOS0040 Micro:bit BOSON Expansion Board

Tips: micro:bit and Micro:bit BOSON expansion boards are used in the programming example.

Non-programming Sample

Connection Diagram:

Programming Sample

Connection Diagram:

Flow Chart:

Mind+ Sample Program:

Makecode Sample Program:

Demo Videos:

Non-programming	Programming

3.Adjustable Speed Whisk

Description:

Make a whisk with the whisk head fixed on the motor's shaft, and use the rotation sensor to control the motor's speed.

Components:


BOS0001 Rotation Sensor	BOS0024 Motor Controller Module	FIT0528 N20 Speed Reducing Motor Module

MBT0039 Micro:bit	BOS0040 Micro:bit BOSON Expansion Board	Mainboard-3IO