Voltmeter-Clock

A clock made with an analog voltmeter controlled by an Arduino nano.
The switch controls three different light modes.

Schematic

Parts

• 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