Value Packer (or just ValPacker)

Open this page at https://brickhackers.github.io/pxt-valpacker/

A lightweight MakeCode (PXT) extension designed to pack two numeric values into a single number for synchronized transmission, and unpack them back on the receiving end.

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/brickhackers/pxt-valpacker and import

Why use it?

When sending dual-axis data (like X and Y coordinates from a joystick) over radio or serial, sending them as two separate packets can cause synchronization issues or lag.

ValPacker solves this by encoding both values into one single number on the transmitter side and decoding them back into individual components on the receiver side at the exact same time.

Usage

Transmitter (Packing)

Pack your X and Y coordinates into a single payload before sending:

let packedPayload = valpacker.pack(joystickX, joystickY)
// Send packedPayload via radio or serial

Receiver (Unpacking)

Receive the single number and extract both original values instantly:

// Receive packedPayload
let unpackedX = valpacker.unpackX(packedPayload)
let unpackedY = valpacker.unpackY(packedPayload)

Metadata (used for search, rendering)

• for PXT/microbit