My plan was to create a printed circuit board based on the prototype I built. However I've been using the prototype for two years and haven't finished the printed board design. I've had a few new ideas since the original design, so I'll see if I can get them integrated and the board designed and printed. Then I'll sell some of the blank boards at a low cost.Originally Posted by Larry Kellogg
If you are willing to build a prototype board I can certainly provide some pictures and a description of what needs to be done. It's really not much, especially if you don't want it to switch AC for safelights. You need an Arduino, keypad, 20x4 display and some Buck Block drivers with a few transistors. All of it's pretty standard stuff in the Arduino universe.
I don't really want to get involved in turning this into a business. I'm mostly afraid of the liability of sending out electronics that use AC power (I don't want to fry someone). But I've found some new drivers that will boost a 12V DC power supply to higher voltage to drive the LEDs. So something could be built that uses a standard PC power supply, which would simplify things a lot.
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