I really think that the screw in bulbs and easy to change switch covers are a big part of the illusion of this device, remember you are trying to involve someone else and their ability to understand the easy to exchange lamps and switch covers makes it all the more frustrating to figure out.
I looked around some on-line for similar lamp sockets but so far nothing that matched what they used. Search continues.
IMHO LEDs are too high tech and many would figure they contain some form of wizardry inside (like a flashing LED has)
Colored LED covers might work but it'll still appear modern.
I was thinking of using these inserted through a wood base thick enough to hide it, all you would see is a hole to screw the bulb in. **broken link removed**
If anyone knows where to find porcelain lamp bases squeak up.
Power with 4 cells.
To use with bulbs bypass resistors R10-13 with junpers JP1-4.
If you choose to use LEDs you need to polorize the sockets.
This should be easy to etch and solder.
EDIT: Current version is 1B which uses SMD Jumpers
Board is aprox 2.0 x 1.5 inches
Updated schematic
Added board and foil images 300dpi
Will post eagle files if requested
I'd love a PCB, and thanks Marks256 for the food colouring tip.
PS the code will be interrupt driven, of course you can change it as it'll be trimmed down to simply work.
Two interrupts,
TMR0 (about once per second) will update a counter and sleep / reset
INT_on change PORTB for the switches
That's all you need really.
Looks good. Just a few thing things I noticed. The drill holes on some pads appear to be off center for some reason. You might want to use SMD jumper pads to keep costs down:
We still need to come up with switches for the thing. Any ideas?
kchriste:
Thanks for looking.
I do not plan on making more then a few boards. On the ones where I know LEDs will not be used I will put traces between the pins of the jumpes.
What I posted was generated by Eagle's EXPORT>IMAGE. I do not think the holes will be offset if I print it directly from Eagle. The again it was the new beta version,