Step 5. Solder Switches

Install the twenty-three 12mm tact switches and one 6mm tact switch on the display side of the board as shown in the picture.  It is easiest to install all of them first and solder them afterwards.  Make sure you push the switches all of the way down so that they sit flush with the board.  Otherwise, they could stick up too far and push on the overlay or catch on the side of the enclosure hole.  Once installed, flip the board to the component side and solder all four pins for each switch.  Double check your work because it is easy to miss a pin since they are spread out over the board.