Micro:bit food temperature probe project

Creating a working prototype of a food temperature probe

This activity tasks students with using the micro:bit to develop a prototype for a food temperature probe that will warn people when their food is too cold.

It’s an ideal lesson for introducing students to programming, allowing them to develop their skills, make use of programmable components and even embed intelligence into a product’s design.

This is one of a series of resources to support the use of the BBC micro:bit in design and technology (DT) or computing lessons. It can be taught as a main lesson activity with Programmable systems as a starter activity, and Product integration as an extension activity.

Activity: Creating a working prototype of a food temperature probe
The activity starts with students being briefed on the importance of food being prepared or cooked to the correct temperature. Too cold and it could cause food poisoning, too hot and it could burn. Learners will then be asked to use this knowledge to develop a temperature monitoring system using the BBC micro:bit.

The engineering context
Being able to accurately monitor temperature is important within several industries including food, healthcare, electronics, energy, defence and chemical manufacturing. Engineers must therefore design systems that can not only easily monitor temperature but also automatically trigger warnings (such as alarms) or safety mechanisms (such as cooling systems) to regulate temperature.

Suggested learning outcomes
Learners will be able to understand a block systems diagram of the food temperature probe system. They’ll be able to successfully program the BBC micro:bit so that the system meets the design criteria, being able to choose appropriate inputs and output device for the system they’ve designed.

Download our activity sheet and related teaching resources
The activity sheet includes teachers’ notes, useful web links, and links (where appropriate) to the national curriculum in each of the four devolved nations; England, Northern Ireland, Scotland and Wales.

All activity sheets and supporting resources are free to download, and all the documents are fully editable, so you can tailor them to your students’ and your schools’ needs.

Download our classroom lesson plan and presentation below.

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