I made this toy a couple years ago when my son was 2. He's always been fascinated with lights and switches. In an effort to keep him entertained and perhaps learn the letters in his name, I built this simple toy.
- about 50 LEDs (RED, Orange, Green)
- LM7812 Voltage Regulator
- Power source (I had an extra 15v wall wart in my junk bin)
- Power jack (N-size, radioshack)
- Scrap wood (Oak)
- Various switches (I had laying around, you can find good deals on ebay)
Step 1: Create Template
My first step was to create a template to work from to aid in drilling the holes for the LEDs. I'm a hack with photoshop but was able to come up with something simple to use as a guide when drilling the holes to accept LEDs.
Step 2: Drilling Pattern
Next, using a drill press with the paper template taped onto the wood, I started drilling. I just lined up the bit with the crosshairs on the template. After the holes were drilled, I noticed that the letters were closer than I wanted relative to one another. Not a huge screw-up though as each letter has a different color so that contrast helps.