Wiring up your Raspberry PI

The final stage is to wire up the PI to the LED matrix and the two buttons.

The overall wiring is shown in the schematic below and the instructions refer to the pin numbers in blue.

If you are using the Camera and / or the Real Time Clock then these should already be attached. For instructions on how to do this follow the camera and RTC links.

You will need to use some of the electronics wires.

Step 1 - Wire up the LED Matrix

1. Locate the female connector on the LED matrix. It is the one on the right when looking at the clock from the back

2. Push three male-female electronics wires into this. It is best to match the colors of the wires as it helps in the next step. The male part of the electronics wires should push easily into the LED connector
3. Connect the female ends of the wires to the pins on the RPI board

• Green = Pin 19
• White = Pin 6
• Red = Pin 4

Step 2 - Attach the Left Hand Button

1. Attach the female ends of the wires from the left hand button to pins 20 and 22 on the RPI board
2. It does not matter which wire goes to which pin

Step 3 - Attach the Right Hand Button

1. Attach the female ends of the wires from the right hand button to pins 13 and 14 on the RPI board
2. It does not matter which wire goes to which pin

When you have finished the wiring should look something like the following.

The colors of the wires you chose for the buttons may be different.

Step 4 - Close the Back - you are done!

You should now be complete and you can close the back.

The back of the clock attaches to the back enclosure with the magnets.

1. Carefully align the wires on the back enclosure and slowly bring the back close to it
2. The enclosure should snap into place on the magnets
3. If you trap any wires then simply prise the back appart and push them into place