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Junkbots – it is not one thing!

Junkbots – it is not one thing!:

The School of Science and Technology at the University of Northampton have been working with local schools to create robots made from junk. This is an initiative by the University to introduce environmental sustainability, engineering and computing to students and has been funded by Northampton Enterprise Limited and east midlands development agency (emda). 

For more details on the junkbots project go to: 

This and other posters at Engage 2013 can be found at:

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Controlling a junkbot with a Micro:bit

A new direction has been developed for the junkbot project (; previously Raspberry Pis have been used to control the junkbot’s movement ( – but what about the recently released Micro:Bits; can it be used to control a junkbot?
Matthew Hole, a student from Wrenn Academy, Northamptonshire ; has been investigating this idea whilst on a Nuffield Research Placement ( working with Dr Scott Turner, University of Northampton. The project was to look into developing junkbots controlled using a Micro:bit and also to produce some materials for schools to use with or without outside assistance.

What is a Junkbot? For this project, it is a moving ‘bot’ made from waste materials, combined with an electric motor and a programmable device (in this case a Micro:Bit) to control (or try) it. An example is shown above. More details on junk…

Do it yourself: 'Radio' Controlled Micro:Bit Junkbot

In an earlier post, I showed how you could build a Micro:Bit controlled Junkbot. In this post I want to show a modification to it, to use one Micro:Bit to control the junkbot controlled by another Micro:Bit. A nice feature of the Micro:Bit using micropython, is it can send and receive simple messages via radio - so here is my take on it.

The first problem is the Python editor available on does not seem to work with the radio API. One solution to this is to change to the mu editor.

Two pieces of code are needed.

Sending Code for the 'remote' control:
Essentially it is set up to send two messages, via the built-in radio module, spinl or spinr depending on which button is pressed.

import radio
from microbit import button_a, button_b


while True:
   if button_a.is_pressed():
   if button_b.is_pressed():


Junkbot Code
This takes an adapted form of the previous Junkbot code to work by; on r…