I'm still thinking of building a round LED clock with 12 pcb's that are sections of a larger ring. My question has to do with the type of LED's to use:
1. Diffused vs clear?
2. Viewing angle?
3. Output type (standard, medium, high ?)
I was thinking of using 5mm through hole round ones. The clock diameter will be around 15" and the width of the ring 1.75".
I plan to use PWM to dim the clock depending on ambient light, but ideally it should look the same brightness from any angle. Does that mean I want the widest viewing angle possible? What is the importance of the viewing angle when using diffused?