21 Dec 2011

Fireworks, the first prototype PCB

Yay, today I made the first prototype PCB. Already soldered the absolute minimum onto it for tesing.

Top layer, with Arduino Pro mini 5V (top) and a single 8 bit shift register (below the Arduino).

Bottom layer.
The final layout will certainly differ from this a bit. I did not know how painful it is to solder headers which have connections on the front layer. Thanks to swiss machine pins it is possible without funny chemicals.

Also, the copper around  the via and pin holes are much too small. They make drilling and sometimes proper soldering very hard. It's just looks ugly too.

Further more, a new design decision was to use RJ45 as connector for the expansion to the electric fuses (connectors at the bottom).

Back to the drawing board!