Build an Autonomous Obstacle-Avoiding Robot Car Using MOTION:BIT

Are you ready to meet the newest member of our family? Say hello to MOTION:BIT! This awesome micro:bit expansion board lets you create all kinds of robots with different movements and functions using DC motors and servo motors. In today's video, we'll show you how to make a super cool obstacle-avoiding robot car using MOTION:BIT!  So, let's get started and have some fun!

Video Tutorial

Components Required

• MOTION:BIT - Simplifying Motion Control with micro:bit
• 4 TT Motor with Wheel Kits
• 3V-5.5V Ultrasonic
• Qwiic Cable

Hardware Components

Add to Cart

TT Motor + Wheel Kit

RM6.50

x 1 unit(s)

-19% Best Seller

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3V-5.5V SR04P Ultrasonic Ranging Module

RM4.90 RM6.00

x 1 unit(s)

Add to Cart

STEMMA QT / Qwiic JST SH 4-pin Cable with Premi...

RM5.00++

x 1 unit(s)

Add to Cart

MOTION:BIT - Simplifying Motion Control with mi...

RM125.00++

x 1 unit(s)

-2%

Add to Cart

MOTION:BIT with 18650 Li-Ion Battery

RM132.90 RM134.80

x 1 unit(s)

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3V-5.5V SR04P Ultrasonic Ranging Module

Not Available

x 1 unit(s)

Connection

Code

Connect your micro:bit to your computer and open MakeCode editor to start programming.

• Add “MOTIONBIT” extension
• Add "Ultrasonic" extension
• then follow the code block in the picture above
• After completing the code, download it on microbit

You can also view and edit the code by clicking here!

Car chassis

The car chassis was 3D printed using Artillery Hornet. You can find the STL files Here

Project Complete

When you press Button A, the car will start moving. An ultrasonic sensor is constantly monitoring the area in front of the car. If the sensor detects an obstacle less than 15cm away, the car will immediately stop and steer away from the obstacle to avoid collision.

If you press Button B, the car will come to a complete stop and the RGB LEDs will turn off, ensuring that the car is no longer in motion and conserving battery power.