Paxmax said:
Umm... how do I upload pics?? I absolutely suck at forum techniques.
Anyone knows? /Paxmax
You could upload them at
The Forum Is Down, copy the link and paste it between the image tags (I should look like this your link here[/img* Note: * should be ]), or you could just paste the link, or you could attach it when you reply (It's under the window in which you type your reply: Attach file....Browse).
[quote="Paxmax"][B]Nah, I don't think it's going to work that good. It's going to "strangle" itself. When the BC 547 opens, the voltagedrop over the TIL81 is going to be very very low........................
.....................they are usually more centered around IR. Red LEDs can usually be detected. LOL! Be sure that the TIL81 hasn't got a daylight filter! If it has, it won't detect a s**t from red, blue, green leds.[/B][/QUOTE]
I've build the circuit, but I couldn't get a TIL81 so I used a BPW40...it works fine...BUT it won't detect **** from ANY LED :( (should've mentioned that in my previous post:eh?: , You'll need a phototransistor that'll detect light with a wavelenght as low as ~550nm or lower (565nm for Green, 595nm for yellow and 625nm for red leds).
At least I can test IR remote controls with the circuit:p
BTW: I would love to see what you came up with Paxmax.