light

Comments and reminder for available modes are here Moon bike light. A double press changes modes.

521H 7 segment display is available in common cathode and common anode versions.
521h
Pins 3 and 8 are treated as connected together - the common pins.

Segment letters are enumerated clockwise from the top, G is the middle segment.
The display colour is red.
One current (active) project uses shift registers, 74HC595, to minimise the number of IO pins used on the micro-controller.

A recently donated collection of SMD components included regulators, resistors and capacitors. Some interesting links arising from these are:
ti mirror controls

pdf
80c552 demo board 5 leg regulator
tantalum-capacitors smd