Step 19 - Make wires for buttons
Use the ruler and cutter to build 6 pieces (each 2 wires). The length to become based on of photography (mm).
Step 20 - Preparing 6 buttons
Fit the heat shrink tubing in each wire and prepare the wires with little tin. Solder the buttons with wires.
Step 21 - Insulate buttons
Warm with lighter the heat shrink tubing
o
nce you have already placed over the pins.
Step 22 - Connect 6 buttons to the board
Follow the schematic diagram.
Step 23 - Connect the switch and battery holder
Follow the schematic diagram.