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pxt-motionbit

Cytron MOTION:BIT - Simplifying Motion Control with micro:bit.

MOTION:BIT Extension for Microsoft MakeCode

This code provides the driver for MOTION:BIT - Simplifying motion control with micro:bit.

MOTION:BIT aims at simplifying robots & motion control projects making with micro:bit. With the built-in 4-channel DC motor driver, 8x servo control onboard Li-Ion batttery or external power input terminal, students can build projects with mechanical movements right away. The GPIO breakout ports with LED status indicators on all its IO pins enable additional sensors and modules to be applied to any projects conveniently. MOTION:BIT works with micro:bit V1 & V2.

Read more about MOTION:BIT here: https://www.cytron.io/p-motionbit

Adding the Extension in MakeCode Editor

open https://makecode.microbit.org/
click on New Project and give your project a meaningful name
click on Extensions under the gearwheel :gear: menu
search for ‘motionbit’ or “https://github.com/cytrontechnologies/pxt-motionbit”
click on the motionbit card to install the extension

Examples

DC Motors

Run Motor 1 forward at 50% speed when button A is pressed, brake the motor when button B is pressed.

input.onButtonPressed(Button.A, function () {
    motionbit.runMotor(MotionBitMotorChannel.M1, MotionBitMotorDirection.Forward, 127)
})
input.onButtonPressed(Button.B, function () {
    motionbit.brakeMotor(MotionBitMotorChannel.M1)
})

Servos

Button A pressed - Rotate Servo 1 to 0 degree. Button B pressed - Rotate Servo 1 to 180 degree. Button A+B pressed - Disable Servo 1. No pulse is sent to Servo 1 and it can be rotated by hand.

input.onButtonPressed(Button.A, function () {
    motionbit.setServoPosition(MotionBitServoChannel.S1, 0)
})
input.onButtonPressed(Button.B, function () {
    motionbit.setServoPosition(MotionBitServoChannel.S1, 180)
})
input.onButtonPressed(Button.AB, function () {
    motionbit.disableServo(MotionBitServoChannel.S1)
})

RGB LEDs

Clear all RGB pixels.

motionbit.clearAllRgbPixels()

Change the RGB pixels brightness to maximum.

motionbit.setRgbBrightness(255)

Show color green on all RGB pixels and change the color one by one to red.

motionbit.setAllRgbPixelsColor(0x00ff00)
basic.pause(1000)
motionbit.setRgbPixelColor(0, 0xff0000)
basic.pause(500)
motionbit.setRgbPixelColor(1, 0xff0000)

License

MIT

Supported targets

for PXT/microbit

Open this page at https://cytrontechnologies.github.io/pxt-motionbit/