My idea was to make a scoreboard for our softball team utilizing an Arduino, an IR remote control and LED strips. I decided to use LED strips to make large 7-segment LEDs because it would cost less than buying large ones. My idea is to make the scoreboard for less than $100.00.
The scoreboard displays the visitor and home team scores to 2 digits, the inning to 9 and the outs to 3. Since our league doesn't count balls and strikes, I ommitted them but they can be added in a similar fashion to how the outs were done.
The segments are controlled with an Arduino Mega thru 74HC595 shift registers and TIP-120 NPN transistors with 220 Ohm resistors. The scoreboard circuit was created using copper tape that was adhered to an IKEA table top. The scoreboard is powered from any car 'cigarette' lighter, a 12V battery or a Booster Battery Jumper module. It can also be powered using a 9V-12V wall wart.
Watch the Video.
Step 1: Parts & Tools Needed
5 - 74HC595 Shift Registers
38 - TIP-120 NPN Transistors with the TO-220 Package
38 - 220 Ohm Resistors
5 Meters of Red LED Strip (300 LEDs)
Ikea Table Top
Roll of 5mm X 50' Copper Tape (Sparkfun)
Remote Control (buy one or repurpose an old one)
IR Receiver (VISHAY - TSOP34838)
Black Electrician's Tape
Vinyl Letters - 2" High
12V battery or other power source
Step 2: A Quick set-up of the circuit
Test the 7-segment by setting up the circuit on a breadboard and running a quick, simple code. Use the remote to change the numbers 0-9.