i do pcb design with PCAD but as in free software not sure try the trusty google(i can try to design something for you if you want)
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If you can that would be great. The setup I'm using is shown on the link http://www.uoguelph.ca/~antoon/circ/sensor2.htm. I'm not sure how that PCB designs work but I would like it as small as possible since I'll need 3 of these setups in all in tight area.
I tried google and come up with http://www.new-wave-concepts.com/ed/circuit.html but on the demo it won't let you convert the schematic into a PCB setup.
I couldn't wait.:p So I opened up one of the spare computers I have and took the pwr button wires off. Hooked them up to the relay. I had to use a external 12Vdc battery for the main LDR circuit board. Then I said a quick pray to the god of modding, that would be you Crimson Sky just joking:D , and than I covered the LDR sensor with the shadow of my hand and it powered up. Man it felt cool as hell to hear that relic of a computer spoiling up.:banana: Then I ran my shadow over the switch again and that mother powered down with no problem. Now the only thing I need to work out is to set the LDR sensor along with the LED light back into a recessed hole so that the room light won't affect it. I wouldn't want the computer to turn on/off ever time I enter/leave the room and turn the room light on/off. Oh yeah I'll explain later exactly what mod I plan on using this light activated switch on after I complete my current Monitor Mod.
Outstanding work man!
:pics:
I've video taped the sensor in action with my DCR-DVD92. If you're not fimilar with this camera it burns the videos directly to a mini dvd disc. My problem is I have no idea how to transfer the video from the disc to a format I can upload to YouTube. As you probably can tell I've never tried to do this so any advice or links you guys can give me would be helpful.
I said screw the dvd video camera and used my web cam. I did a quick edit job, threw in the first audio track I could fine from a DJ buddy of mine and I just got done uploading it to YouTube so here you go. Enjoy :D
I took some still shots of the test switch I made to go along with the video I posted earlier.
Just an overall look at the switch.
Test setup in a toilet paper roll.
Closeup at a different angle
Inside the computer. Breadboard setup (yes I know it's a mess). I did find 5Vdc power source on the motherboard to power up the LED but I still have to use an external 12Vdc to run the board. I would like for this setup to run completely off the PSU though.
I'm currently trying to build up a PCB design with the help of others on this forum and then I plan on using a photo-etching method to make a professional looking circuit board. If that doesn't happen then I'll just resort back to using a plain Jane generic board like this one.
Haha...brilliant. What are you going to use this for? :D
+Rep for the ghetto loo roll tube mod!
-Dave