DIY Automatic Shower Timer

We've all been told to take 5 minute showers. However, do we really know how long our showers actually are?Here's a simple weekend project that is both fun and practical. This circuit uses an ATtiny85 chip that automatically starts a timer as soon as you close your shower door. When 5 minutes are up...

By: GeckoDiode



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from Instructables: exploring - technology http://ift.tt/1wG9GUb