Fireworks, Revision 3

The 3rd one is always a good one ;)

Firmware (arduino C++ code), Layout as PDF.

Revision 3 of the fireworks board:

All layers.

Bottom layer.

Top layer.

Everything is now much tighter packed! I decided to use RJ45 to connect every six-pack of rockets (spare 2 pins used as 12V power supply). The arduino's FTDI port can be easily used with an FTDI breakout board.

Lession learned:

• Use small pads only where needed (in tight spots)
• Pull out all available ɥC pins
• plan mount holes
• put as much as possible onto the lower layer (easier to solder)
• 8705 is a very useful power regulator when used with 3-5 cell LIPOs

Hardware documentation is available as PDF or you can get the whole source code including pcb (beta version).