The perma-proto PCB is a lot like a breadboard. The rows are all linked together, while the columns are not. There's two power rails on the top and very bottom that include ground and voltage (indicated by blue and red lines).
The columns are indicated by numbers (1-30) while the rows are indicated by letters (A-J).
The half-size PCB has two separated centers in the center (A-E and F-J). Getting familiar with these labels will help you install the buttons and manage soldering wires.
I used a Dremel with a thin cut attachment to saw the excess pieces off the PCB. I recommend taking safety precausions when doing this.
- Do it in a well ventilated area (outside).
- Use safety glasses and a breathing mask.
- Secure the PCB to panavise jr.
- Always cut away from you.
- Clean dust from work area.
If you're not satisfied with the sharp edge, use can use a grinding bit to round off the corners.
Install buttons (Two Action Buttons)
Insert the four 6mm tactile buttons into the perma-proto and form the D-pad. Two 12mm square will be the "A" and "B" buttons.
If you're making the four-button layout, insert eight 6mm tactile buttons to the perma-proto PCB. Reference the photo above to get the correct spots for each button.
Let's go ahead and snip the points legs from the PCB. This will ensure our perma-proto doesn't puncher or scratch any of the other components.
OK now we have the perma-proto trimmed, the buttons solder in place and ground wires, we're ready to wire up the PiCable to the perma-proto PCB.
This is a good place to take a break. The next section contains lots more stripping, tinning and soldering!