User Manual

9 10

Project 3 : LED Bar Control

Diculty Level

Part List

Description

3. LED Bar Control

In this demo you will learn to control

the LEDs on your micro:bit with the

rotary angle sensor. The number of

LEDs turned on will increase or

decrease as you rotate the knob on

the sensor.

1x Grove - Rotary Angle Sensor(P)

1x Grove Shield for micro:bit

1x micro:bit

Steps

Add basic block forever, then add Led block plot

bar. Replace the rst value with pin block analog

read pin P0, and change the second value to “1023”.

Add basic block pause (ms) (100).

4. Rotate the knob on the rotary angle sensor and

see the change of LED Bar.

Try to change the “up to” value from 1023 to other numbers and see what will

happen. Is there a difference compared to Demo 2?

2. Hardware connection: Connect the rotary angle

sensor to P0 port of micro:bit

3. Click Download to transfer your code in your

micro:bit!

P0/P14