Meet the Cutebot Pro – The smartest Micro:bit Robot Car!

The CuteBot Pro is a programmable robot-car kit designed for STEAM/robotics education.
Key features include:

• It supports the micro:bit board (or similar controller) as its brain.
• It has encoder motors (for precise movement), line-following sensors (4-way/4-sensor variety), an ultrasonic distance sensor (for obstacle detection), LED lights, etc.
• It includes expansion interfaces so additional sensors or mechanical parts (arms, attachments) can be added.
• It’s targeted at educational use — ages around 9 or 10 and up.

Obstacle Avoiding Car

/**
 * --- VARIABLES ---
 */
// --- BUTTON CONTROLS ---
input.onButtonPressed(Button.A, function () {
    CutebotPro.pwmCruiseControl(0, 0)
    CutebotPro.colorLight(CutebotProRGBLight.RGBA, 0x000000)
    // Bottom lights same as headlight
    strip.showColor(neopixel.colors(NeoPixelColors.Red))
    basic.showIcon(IconNames.No)
})
input.onButtonPressed(Button.B, function () {
    CutebotPro.colorLight(CutebotProRGBLight.RGBA, 0x00ff00)
    // Bottom lights same as headlight
    strip.showColor(neopixel.colors(NeoPixelColors.Red))
    music.playTone(523, music.beat(BeatFraction.Eighth))
    CutebotPro.pwmCruiseControl(SPEED, SPEED)
    basic.showIcon(IconNames.Yes)
    basic.pause(500)
    basic.clearScreen()
})
let distance = 0
let strip: neopixel.Strip = null
let SPEED = 0
// reduced forward speed for smooth stop
SPEED = 40
// turning speed
let TURN_SPEED = 17
// backward speed
let BACK_SPEED = 20
// obstacle distance (cm)
let THRESHOLD = 20
// start slowing down here
let SLOW_DISTANCE = 20
// duration for 90° left turn
let TURN_TIME_90 = 50
// ≈3 cm reverse duration
let BACK_TIME = 100
// 0.5 second stop delay
let STOP_DELAY = 500
// --- NEOPIXEL LIGHTS (Bottom Lights on P15_0 and P15_1) ---
strip = neopixel.create(DigitalPin.P15, 2, NeoPixelMode.RGB)
strip.setBrightness(80)
// --- STARTUP ---
basic.showIcon(IconNames.Heart)
music.playTone(262, music.beat(BeatFraction.Quarter))
basic.pause(500)
basic.clearScreen()
CutebotPro.colorLight(CutebotProRGBLight.RGBA, 0xffffff)
// Bottom lights same as headlight
strip.showColor(neopixel.colors(NeoPixelColors.Red))
CutebotPro.pwmCruiseControl(SPEED, SPEED)
// --- MAIN LOOP (SMART OBSTACLE AVOIDANCE) ---
basic.forever(function () {
    distance = CutebotPro.ultrasonic(SonarUnit.Centimeters)
    if (false) {

    } else if (false) {

    } else {

    }
})

Line Following Car

/**
 * Line Following Program with All White LED Lights
 * 
 * Extension required: pxt-cutebot-pro
 */
// Initialize the bottom NeoPixel strip on start
let strip = neopixel.create(DigitalPin.P15, 2, NeoPixelMode.RGB)
basic.forever(function () {
    // Read the tracking sensor state
    CutebotPro.trackbitStateValue()
    // Set all lights to white
    // White headlights
    CutebotPro.colorLight(CutebotProRGBLight.RGBA, 0xffffff)
    // White bottom lights
    strip.showColor(neopixel.colors(NeoPixelColors.White))
    // Tracking State 1: On line (straight)
    // Tracking State 2: Line on far right - turn right
    // Tracking State 3: Line on far left - turn left
    // Tracking State 5: Centered on line
    // Tracking State 6: Slight deviation right
    // Tracking State 7: Slight deviation left
    // Tracking State 8, 9, 11: Line drifting left
    // Tracking State 12, 13, 14: Line drifting right
    // Default: Lost the line - stop
    if (CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_1)) {
        CutebotPro.pwmCruiseControl(25, 25)
    } else if (CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_2)) {
        CutebotPro.pwmCruiseControl(35, 0)
    } else if (CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_3)) {
        CutebotPro.pwmCruiseControl(0, 35)
    } else if (CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_5)) {
        CutebotPro.pwmCruiseControl(25, 25)
    } else if (CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_6)) {
        CutebotPro.pwmCruiseControl(30, 15)
    } else if (CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_7)) {
        CutebotPro.pwmCruiseControl(15, 30)
    } else if (CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_8) || CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_9) || CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_11)) {
        CutebotPro.pwmCruiseControl(0, 35)
    } else if (CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_12) || CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_13) || CutebotPro.getGrayscaleSensorState(TrackbitStateType.Tracking_State_14)) {
        CutebotPro.pwmCruiseControl(35, 0)
    } else {
        CutebotPro.pwmCruiseControl(0, 0)
    }
})

More Projects