In this instructable I will show you how to make a scrolling LED display and how to install it in a hard hat. It also plays pong!
Step 1: Materials
-2 10k potentiometers
- 3 4.7 kOhm resistors
-4 SPST toggle switches
-1 5x7 bicolour LED display
-1 8 pin dipswitch
-1 atmega168 microcontroller (or arduino)
-1 28 Pin 'skinny' socket
-1 3.7V lithium polymer battery
-Hot Glue Gun
-Plexiglas Cutting Knife
- Microcontroller Programmer (optional)
Step 2: Solder the Display
For the next step I used switch 8 for a 'travel mode'. This is so the hat isn't accidentally turned on in a bag and drained.
Step 3: Solder the Power Connections
Step 4: Attach the LEDs to the Board
Step 5: Solder Switches
For each switch, it is one contact of the switch connected to the corresponding microcontroller pin and the other to the positive voltage. There is also one resistor from the input pin to ground for each switch.