MegBot

This is a MicroBit robot based on Kitronik Motor Driver Board V2. The aim was to make a robot that could be used by different students per lesson and at a low cost.

The whole robot (without MicroBit) should cost around £20 or less if bought in bulk.

The motors and wheels are cheap to buy as well as being acurate and robust. The build once printed took only a few minutes and can be compleated by students, without tools (screwdriver needed for motor points).

The code added is for obstacle avoiding robot, using Sonar:bit and the Kitronik motor board. The Sonar:bit is expensive (£7) but it is low voltage and uses only three pins.

The marble caster is from; https://www.thingiverse.com/thing:609498

or

https://www.thingiverse.com/thing:1408935

Motor Board:
https://www.kitronik.co.uk/5620-motor-driver-board-for-the-bbc-microbit-v2.html

Motors:
https://www.amazon.co.uk/Wheel-and-Motor-Assembly-x2/dp/B01E958ZZI/ref=sr_1_2_sspa?keywords=motor+and+wheel&qid=1554287815&s=gateway&sr=8-2-spons&psc=1

Sonar:bit (not shown in images, but is 3-5v (video coming soon))
https://coolcomponents.co.uk/products/sonar-bit-for-bbc-micro-bit-ultrasonic-distance-sensor

Please Note: If using sonar, you will need a low power version (3v) of HC-SR04 as the board will not give out power for more then 3v.