Hand Wash Timer
thingiverse
The hand washing timer is a project that utilizes Attiny85, neopixel, pir sensor and 3D printed parts to create a useful time counter for washing your hands during the COVID-19 pandemic. Recently, I developed my version of the hand washing timer using the following components: 1. One Attiny85 microcontroller 2. A DC-DC step-down module to convert voltage to 5v 3. A neopixel ring with 16 LEDs 4. A mini pir sensor for motion detection 5. Four AA batteries, each providing 1.5 volts 6. A battery holder designed specifically for four AA batteries 7. A micro switch for added functionality You can view my hand washing timer project in action by visiting this YouTube video: https://youtu.be/D_ZX8zxqQ20
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