LDR (Light Dependent Resistor) Volume Control

[luvdunhill]

what, you don't paint all your LEDs used in CCSs black to avoid the photoelectric effect?

[guzziguy]

what, you don't paint all your LEDs used in CCSs black to avoid the photoelectric effect?

What about MilSpec fingernail polish?

[Smeggy]

milspec is too dagerous for such a simple design, it would kill all the civilian components... Collateral damage should never be taken lightly.

Anyway, I popped a pair of batteries in the case, attached it to one of the LEDs to make sure it was nice and bright... it was a small supernova for about 1 millisecond before a fizzle and funny, yet familiar smell of burning. It seems two 1.5V batteries are a bit much for a 2.4v LED. Will pick up some 5v ones later.

So anymore thoughts on my crossfeed idea? no light - stereo, full light mono. adjusted - variable mix, running parallel to the normal singnal.

[mypasswordis]

Haha, I forgot about other LEDs in the circuit/case, too. Mm, nothing like males with black nail polish.

Just put a resistor in series before the LED, no point in lighting up the entire case, and if you open it up, the entire room, with the LEDs. The photocells might not be able to handle such brightness anyway. LEDs typically only need a few milliamps to be bright enough.

[spritzer]

You need the resistor or the led's go poof.

[Smeggy]

what resistor value should I use?

[Smeggy]

Of course, the answer to everything! I should have known.

[spritzer]

Google is your friend here are there are a lot of LED calculators out there. Just be sure to feed them the correct values and you'll be fine.

[Pars]

I think these were what you were looking for from ratshack:

RadioShack.com - Cables, Parts & Connectors: Component parts: Diodes & rectifiers

[Smeggy]

Yeah, that's the pack I bought. Now I gotta go back get more LEDs and find out what resistor it needs for my 3v battery supply.

[mypasswordis]

If you have any random resistors on hand, something in the range of a few hundred ohms should do. Just try it out, as long as it's greater than 100 ohms or so.