A clock made with an analog voltmeter controlled by an Arduino nano.
The switch controls three different light modes.
- 1 x 5V Analog voltmeter
- 1 x Arduino nano
- 1 x RTC DS3231
- 1 x SPDT Switch
- 1 x 5.5mm Female barrel connector
- 1 x Red LED
- 2 x Yellow LED
- 3 x 220Ω Resistor