Started work on a little side project: A workout timer. I need a simple timer during morning workouts and this is a good challenge for it.

Requirements and problems to solve:

• Smooth rotary encoder feedback (suprisingly hard)
• Large numbers on LCD
• Object oriented menu system
• Battery powered and rechargeable

Built a prototype board with LCD, encoder and Arduino for easy testing. Encoder implementation with interrupt pins already working nicely. Next step: OOB menu system.