last edited Jul 22 2017 by Graham Hastings | Created by Graham Hastings | Other contributors:
Using a micro:bit to monitor the level of algal growth in a pond and to control a filter pump.
Duration: 1-2 hours depending on the children’s confidence with a micro:bit.
Teaches: Pond ecology, micro:bit for physical computing, MakeCode editor for programming, sensing and control, feedback control systems, the need for calibration, simple circuits. Extension work - Ohm’s law and the potential divider circuit, the concept of hysteresis in control systems.
Website: micro:bit of Things
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