pxt-microbit-bridge

micro:bit ↔ Minecraft Education Edition bridge extension.

Send messages, sensor readings and variables between your micro:bit and Minecraft via the meews bridge server.

Use as Extension

This repository can be added as an extension in MakeCode.

• open https://makecode.microbit.org/
• click on New Project
• click on Extensions under the gearwheel menu
• search for https://github.com/gamenoodlesoup/pxt-microbit-bridge and import

Blocks

Send Message

Send a free-form text message to Minecraft. Arrives as mb:msg script event.

MinecraftBridge.sendMessage("hello")

Send Sensor

Send a named sensor reading to Minecraft. Arrives as mb:sensor script event.

MinecraftBridge.sendSensor("temperature", input.temperature())

Send Variable

Send a named variable to Minecraft. Arrives as mb:var script event.

MinecraftBridge.sendVariable("score", 42)

Example

input.onButtonPressed(Button.A, function () {
    MinecraftBridge.sendMessage("button_a")
})
input.onButtonPressed(Button.B, function () {
    MinecraftBridge.sendSensor("temperature", input.temperature())
})

How it works

1. micro:bit boots → sends READY over serial at 115200 baud
2. Browser bridge sends CODE:XXXX → micro:bit displays the 4-char pairing code on LEDs
3. Student uses blocks to send data → serial → browser → meews server → Minecraft
4. Minecraft can send commands back → CMD:display:Hello → micro:bit scrolls "Hello"

Incoming commands (automatic)

Command	micro:bit action
CMD:display:<text>	Scroll text on LED
CMD:icon:<name>	Show built-in icon
CMD:beep	Play a tone
CMD:clear	Clear LED matrix

Protocol

Serial at 115200 baud, newline-delimited.

micro:bit → browser:

Message	Format
Ready signal	READY
Text message	MSG:<text>
Sensor reading	SENSOR:<name>:<value>
Variable	VAR:<name>:<value>

browser → micro:bit:

Message	Format
Pairing code	CODE:<4-char>
Display text	CMD:display:<text>
Show icon	CMD:icon:<name>
Play beep	CMD:beep
Clear screen	CMD:clear

License

MIT

Metadata (used for search, entity rendering)

• for PXT/microbit

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