Building a Bus Pirate

The dangerous prototypes Bus Pirate is a really cool probing device. A friend of mine also wanted to build one and that made ordering a few pcb’s an interesting option. Off course we went to dirty pcb’s as the boards are fully functional but not always perfect. That’s good enough for the low price they charge.

Now we wanted the Bus Pirate to fit on a 5cm * 5cm board but the layout is slightly larger then that. Well, my mate take the challenge to shrink the board and succeeded to do so. The silkscreen took a hit, but all components were squeezed into 5cm. It’s not perfect, for example the location of a decoupling cap should be closer to the pic. We received 14 boards and they all were just fine for what we wanted. The silkscreen is running a bit of the board, but that was our own doing. Something has to give when squeezing a design into max 5cm. 😉

buspirate plus 2 levelshifters in one 5*5cm pcb

buspirate plus 2 levelshifters in one 5*5cm pcb

After separating the boards

Split pcb, one buspirate and 2 levelshifter boards

Split pcb, one buspirate and 2 levelshifter boards

Some parts we had available, most had to be ordered. Halfway through soldering components it looked like

Halfway soldered buspirate

Halfway soldered buspirate

The finished, flashed and now tested buspirate.

Buspirate, ready and tested

Buspirate, ready and tested

 

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