Working schematic...
Here's the schematic I'm working from:http://www.scarydesign.com/pbp/144LEDGAME.PDF
Art is going to have to make a small change to his code for the input switches; they all switch high.
You have a few choices for what to use for a supply voltage.
Current limit resistors for the led's is calculated (loosely) for a 10% resistor using a red led steady state. If you wanted to dump a bunch of current through the led (light up the room) you could go as low as 10 ohms. You need to adjust this value for the led you use (hint: Rled=Vsupply-(VFled + VFtransistor/I).
I didn't put a part number on the transistor. Almost anything will work.
The leds, resonator and resistor PCB pads will take either through-hole or SMD parts. Everything else is through-hole.
I put a jumper block on the ICSP lines; I've never hung this much stuff off these lines (I usually try and dedicate them on my designs). If it programs with all this stuff jumper the block with wires.
Bookmarks