Given an input and some sort of indicator, is there any device that can’t be hacked into a timepiece? With the help of an Arduino Nano and an ESP8266 module, Guilio Pons has created a unique clock out of a 1950s-era multimeter.
Pons’ project not only displays time with an indicator originally meant to reveal electrical values, but is also able to output sounds as needed using a speaker recovered from an old toy. He integrated three LEDs as well as a PIR sensor, so the unit can light up at night.
PWM control from the Arduino takes care of moving the gauge, while the ESP8266 allows the time to be synchronized via the Internet and the alarm adjusted over WiFi.
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