Step 1: Cut a window in your backpack
First, you need to cut a 19 x 9.5 cm window in the front pocket of your backpack through which you’ll be able to see the led matrix display:
Step 2: Glue the “viewing window”
Cut a 21 x 11.5 cm window in a clear plastic book protector sheet to create the “viewing window” of your Arduibag. Then glue it carefully inside the front pocket of the backpack to ensure perfect sealing…:
Step 3: Shape the main board
Prepare the main board: cut a thin plywood board to the exact shape of your backpack front pocket:
Ok, now we can prepare the main board’s electronics!