My brother had an idea for a project, and asked me to design and produce a PCB and case. If you have a circuitmaker login, you can look at it here.
The basic design is a combination of the following products all in to one PCB, with additional buttons and LEDs to do the job he wants:
- LiPo charging and power conversion: (http://www.sparkfun.com/products/11231)
- Arduino Micro compatible CPU (http://www.sparkfun.com/products/12640)
- 7-Segment displays (similar to http://www.sparkfun.com/products/11442)
I did run the 7 segment displays off of a shift register instead of the ATMega328 sparkfun used, which helped keep my I/O to a minimum.
For power, the unit will use a LiPo battery, but I haven’t yet picked the exact model that will fit in the case and also last all day. I still have a few power measurements to make.
Schematics: Game Clicker (pdf)