Step 6. Fit the Power Terminal and IOIO

That’s pretty much all the hardware. It just remains to solder the screw terminal for the power into place, and then fit the LED Matrix and IOIO (Figure 4-9).

Solder the screw terminal block into place first and mark the upper connection with a + to reduce the chance of applying the supply voltage reversed.

The LED Matrix has little cutouts and pegs to allow bigger displays to be made by joining more than one of them together. The correct orientation for the cutouts is at the bottom and left of the board.

Figure 4-9 shows the board fully assembled and ready to go.