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Infinite RGB LED Cube
The figure in step 10 shows how to connect the ends of your strip to the circuit, and what switch are you looking for ?
So you are trying to power your lights using the current from your audio device ? That's never going to happen and is probably going to fry your audio output circuit. I think you should consult some of the other instructables which are based on the TIP31C, the circuit is pretty straightforward for that.
As a rooke in electronics I want to try yous schamatics but your circuit is a bit confusing asin the parts list tere is no diode an in diagram there is no switch.
Sound Reactive LEDs
Need help,I haven' t use any resistors in my circuit, I used TIP31c & 5cm led cuted from a smd3528 strip red, as I thought that the led have resistors in them, supplu volt is 12v dc from ac to dc adaptor @1amp or from my psu in my pc.I have a few questions1. When I connect the circuit on psu nothing works more over my pc is conducting current.? Q2. What is the quantity of leds can I use as 5cm has 3 led and 1 resistor it drawing somewhere 0.24 watt and 0.02Amp (0.08*3) = 0.24/12v =0.02Amp.and the TIP31c can handel 3Amp ?Q3. Without using any resistor will I fry my audio device ( pc,Mobile)?.Q4. Can I connect additional 100ohm resistro per 1m strip and one 47k ohm resistor to the right prong of tip31c and another 4.7k Resistor at the left prong of the tip31c will it secure the curcuit? Sorry for such a long post plz reply I need help.
I have made with TIP31c , and cut the led strip (1 pice with 1R ,3led) , and connceted with12v dc , my question is how many led can I connect (wants to connect 1M strip )
Awesome! Very nice explanation! I'm definitifly going to build this. (Already prototyped it - works flawlessly) Since the Lm 324N is a quad op amp, i'm going to make it stereo with a single powerful led each (red & green) and im going to use it with my homemade boombox (instructable coming soon!), wich also features built in VU-meters.
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