A nicer voltmeter clock
4 hours ago
- #Woodworking
- #Clock Design
- #DIY Electronics
- Revision of a voltmeter clock design using three 90° panel voltmeters with continuous motion hands.
- Custom front and back panels cut via CNC to hide plastic flanges, featuring a decorative pattern.
- Challenging curved side wall achieved by notching, moistening, and clamping wood for a seamless appearance.
- Simple circuit with AVR128DB28 MCU, driven by high-frequency digital pulses instead of DACs, using two buttons to set time.
- Well-commented code uses a 10 Hz timer interrupt for timekeeping and manually toggles output pins without hardware PWM.