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  #1  
Old 03-10-2007, 10:30 AM
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Default Portable D2 speaker :D

Started a new project.. Basically I took some LEDs, a bread board, one of these, and a box that came with a DIY mini amp kit...
I can't for the love of me find the pack of transistors I bought some days ago so I won't get the electroniscs up and running 100% until monday, so Im thinking of painting it black until then. When it's done, it will hopefully have some more swtiches that control the D2 LED siugn, so it can be turned off, permanently on or blinking to the music (left speaker = D, right = 2 so it blinks stereo so to speak).

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Old 03-11-2007, 07:37 AM
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Old 03-11-2007, 07:44 AM
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Looks really nice!!!

I do have a question; I’ve noticed that you use the POANG
Foldable Speakers in your projects a lot. Have you found any better options (high end) or do these sound so great that you don’t need to. Also, how do they sound when the signal is boosted through an amp?
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Old 03-11-2007, 08:20 AM
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Well I don't make these things to use them, not really, it's just for fun and then im done. Thats why i use the not so high end so-called POANG speakers (funny story: the product names are from an ikea name maker thingy, lol) all the time, they are $7 shipped So no they aren't high end, but if I ever ake anything that I'm to actually use, I might find some It should though be said that the poang's are damned good for their price! Nothing sort of amazing, as the sound is actually not that bad! Also, I now use 4x AA batteries instead of 4x AAA, so the sound is a bit better than normal as they have a better power source
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Old 03-11-2007, 10:21 AM
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Captain is lost in blue - great job, once again!

Do I notice Simon & Rapunzel on your D2? ... Not that much techno/geeky stuff for those speakers...
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Old 03-11-2007, 10:26 AM
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Old 03-11-2007, 10:28 AM
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Nice custom 3.5mm connector!
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Old 03-11-2007, 10:45 AM
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Quote:
Originally Posted by Captain Ødegård View Post
Well I don't make these things to use them, not really, it's just for fun and then im done.
Then why not through them up on eBay to finance your fun!
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Old 03-11-2007, 11:04 AM
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Quote:
Originally Posted by Ray View Post
Then why not through them up on eBay to finance your fun!
That sounds like a lot of work I have sold some of my stuff...Biggest "problem" is I really dont car e how it looks, thereby often ruining the finish. Anyone can spray some paint o nseomthing and make it look shiny, i care more about making it actually work
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Old 03-12-2007, 09:58 AM
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wohoo done :d

youtube link: http://youtube.com/watch?v=zjLP5LuFsWQ






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Old 03-29-2007, 01:24 PM
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how do you get the led's to flash with the music? you have them hooked up to the preamp for the speakers i think.. but how could i do this with my big stereo? cause i think it would be sweet.. and if possible have them work with either rca cables or a female jack... either would work for me.
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Old 03-30-2007, 01:47 PM
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A transistor. I haven't done this in a while, so I can't remember where exactly everything connects to on the transistor though...
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Old 03-30-2007, 06:57 PM
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A transistor. I haven't done this in a while, so I can't remember where exactly everything connects to on the transistor though...
Yup With mp3 players though they dont have enough output for that methon, needs some sort of amp.... and adding a "volume control" (potentiometer) before the transistor would make it more adjustable. Anyways, transistor has three "legs", basis, collector and emitter. You connect the left/right channel to the basis, ground connects to emitter, then you just make a simple LED circuit with battery/whatever and LED and cut the wire somewhere on it and put one end on the collector and one on the emitter (yes with the ground from the sound, doesnt matter). Then you're done, whenever the music reaches 0.7V the leds will light. Just finished a more sophisticated sound toled box, video still processing on youtube
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Old 04-01-2007, 01:57 AM
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What transistors do you use? I've got an SS9012 and an S9014 and can't get either of them work in this circuit. The LED stays constantly lit. I find it hard to believe they are both bad, but I suppose it could happen...
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Old 04-01-2007, 02:52 AM
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Never mind. Had the polarity backwards... I didn't think that mattered, but apparently it does!
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Old 04-01-2007, 05:08 AM
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Heh yeah it does.... When using transistors there's a couple of things that are very important. For instance, dont run the basis circuit off directly off the circuit of the collector circuit, thats bound to cause weird problems
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Old 04-01-2007, 01:53 PM
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Now I just need to find a simple way to boost the output voltage to .7 volts without having to throw an entire audio amp in the circuit... This could be tricky.
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Old 04-05-2007, 05:07 AM
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use one of those mini ipod speakers i use, under $5 shipped from dealextreme.com.... use as amp, i mean
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Old 04-11-2007, 04:08 AM
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Quote:
Originally Posted by Captain Ødegård View Post
For instance, dont run the basis circuit off directly off the circuit of the collector circuit, thats bound to cause weird problems
Well, I wish I had read this part before permanently burning a chip part number into my finger... I had it all working perfectly, but after a few minutes of flashing light bliss, I noticed something smelled a bit odd. So I unplug it and start feeling components on my amplifier's circuit board to find out what's burning, and I quickly found it!! The amplifier chip was shorted out and became scalding hot. So I now have a burn mark on my finger in the shape of the chip...
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Old 04-11-2007, 05:34 AM
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Pics, I want pics... that sounds cool, in a Borg kinda way.
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