And, what are the limitations which won't allow the circuit to ramp the brightness with the varying power from the amp? soldered to the source lead on the mosfet?Ĭan I possibly get a laymans description of how each of the new components improve the circuit as it relates to the application? (except the fuse, if it's a fuse, I can wrap my brain around its function pretty well) I'd like to understand better exactly what I'm building. I hope you'll forgive my thickness on this - to clarify for those of us who don't work with electrical schematics all day long - we have now a 100uf capacitor followed by a 1k (fuse?) going to the gate on the mosfet from the positive speaker lead, and GopherT would put in a 1M resistor. Thanks for the sketch and the information! Also hopefully point me towards a suitable transistor! I sketched a layout based on my extremely limited understanding of how transistors work and where they need to be in a circuit, but hopefully somebody can set me straight and let me know how the wiring could/must be changed in order to work. For the controller to work 100% I assume it has to be powered full-time, and the transistor/speaker cable hookup must be between the controller and the LEDs themselves. What I hope to achieve is a design where the controller can do all of its functions properly (dim/change colors) while the LEDs are only lit when getting power as controlled by the audio amplifier/transistor. The most helpful project I've found is here: So I've been using this as a jumping off point, using a transistor to govern the power going to the LEDs off a separate source. The extra twist I've got going on is I'm using RGB strip lights with a controller. So, if it's possible I'd like to do this the 'right' way. I've seen some projects for this around the internet, but everybody seems to be 'winging it' and not necessarily creating a circuit that will last. I'm trying to build a subwoofer with integrated LEDs which will pulse to the beat.
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