Sound Reactive Led Box





Introduction: Sound Reactive Led Box

Here is a little drawing of how i wired the reactive led lights to a usb



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Can i use a tip41C for this

does your sound have to be at 100% in order for this to work

no it doesn't. However, the louder your sound is the brighter/more reactive they will be. Pretty much every song has a a different level your volume should be at for them to be just right

I need some help with the tip31 transistor. My application is for the display panel of an old audio receiver I'm revamping. After a healthy share of internet research (although not enough), I decided to go with the tip31c. Well - the receiver is an 80W receiver and when I cranked up the volume a bit, the transistor sizzled and burned. My guess is that the 40W power dissipation rating for the TIP31 transistors meant that my 80W receiver was gonna blow it to bits. Great analysis for Capt. Hindsight. So do I need to go with a different transistor or should I forego the effort?

hah! well now i know what i did wrong. My transistor needed a heatsink. :p
Noob fail.

Hahaha comenting on a 3years old post, anyways try Tip122 its 100v & 5to8 A ,

hi i built this but when connecting the power up the led just stays on? pllease help!!

If they stay on, it means that you have cathode (negative) going to the LEDs and the anode (positive) going to the leg of the transistor. Just re-hook up the power with the positive going to the LEDs and the negative going to the transistor.