A simple radio communication experiment using two Micro:bit boards, which can transmit and receive command to/from each other. Watch the video below to see it in action, then follow the instructions to build your own!
Micro:bit Radio Communication
What You Need 🎁
To build this project, you will need the following items:
2X Micro:bit boards
2X micro USB cables
A PC/laptop with any OS
2. Step by Step Guide 📋
First, open Microsoft Makecode for Micro:bit site (https://makecode.microbit.org/) to create commands for Micro:bit. You can write the code using Javascript or simply choose Blocks menu.
If you choose Javascript, write the lines below:
input.onButtonPressed(Button.A, () => {
radio.sendString("A A A")
})
input.onButtonPressed(Button.B, () => {
radio.sendString("B B B")
})
radio.onDataPacketReceived(
({ receivedString }) => {
basic.showString(receivedString)
})
for (let i = 0; i < 5; i++) {
basic.showIcon(IconNames.SmallDiamond)
basic.pause(100)
basic.showIcon(IconNames.Diamond)
basic.pause(100)
basic.showIcon(IconNames.Target)
basic.pause(100)
}
basic.pause(500)
radio.setGroup(43)
basic.showIcon(IconNames.Heart)
basic.forever(() => {})
If using Blocks, arrange the code like the following picture:
Blocks
After that, click Download button to get a .hex file for your Micro:bit board. Simply connect your Micro:bit to your PC/laptop, then paste the .hex file into it.
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