Pete Milne
The box contains a small board based on an ATMEGA328P-PU chip and supporting components, including a MOSFET to reduce power consumption while in sleep mode. The code was developed on an Arduino Uno. When powered up by 4 x AA cells, the box can remain idle for several months while it waits to be activated. Once the switch is turned on, the lid opens and an arm switches it off again. Both the arm and lid are controlled by small low powered servos and they operate in a sudo-random sequences each time the switch is activated.
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Arduino Powered Machine that turns itself off
Fun project to learn about MOSFETs, AVR low power modes & servo control - it get lots of laughs when left lying around in the office
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