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LED control idea
Trimoor:
http://ourworld.compuserve.com/homepages/Bill_Bowden/homepage.htm#menu
http://www.aaroncake.net/circuits/index.asp
Those are the only general electronics links I have left. The rest are microcontrollers or specific things. Once again, google. A simple search for electronic circuits will yield more results than you could possibly choose from.
Oddly enough, paint is still the best program for articulate hand drawn diagrams. There are electronic cad programs, but nothing available in a decent (read: free) price range.
tetsujin:
--- Quote from: Trimoor on February 18, 2005, 02:36:48 pm ---Electronics Basics
Otherwise, Google is your friend. I hope you won't be disappointed to learn that electronics is almost entirely math.
--- End quote ---
I feel like there's a lot of bad information out there on the net. I don't know that Google is necessarily your friend on this one.
I'd recommend finding a good book on the subject. Electronics supply shops sometimes can help there (even Radio Shack), and any bookstore with a good technical books section might be worth a shot.
Kremmit:
--- Quote from: Trimoor on February 17, 2005, 05:40:58 pm ---
--- Quote from: Kremmit on February 16, 2005, 10:00:20 pm ---Couldn't Trimoor's circuit add the All-On feature by adding a separate path to ground, wired to a common switch? I suppose you'd also have to wire in a cutoff for the existing, button controlled ground path. Hmm... an SPDT could handle both jobs at the same time, couldn't it?
--- End quote ---
That's exactly what I did. See my second circuit above. The 'cutoff wiring' is what the diodes are for. A DPST switch would be best, but I don't know of any microswitches like this. SPDT is a standard microswitch.
--- End quote ---
Oops, I "Dyslexified" it! ::)
cholin:
One more question before I let this thread die:
Resistors and Diodes were mentioned in this circuit, and when I decided to look into them, well theres more than just OHMS. Theres ones based on watts too! So I just wanted to know quickly what to use...1/4 watt, 1/2 watt, etc. I figure 1/4 watt would do 5 volts, but im not sure.
Trimoor:
Resistor wattage is dependent on, well, watts.
The wattage rating is the maximum.
20mA = .02A
.02A * 5V = .1W = 1/10 Watt
1/8 watt is the minimum standard to use, but larger wattages will work fine. Use whatever is convenient.