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» Thanks, much appreciated!
» I call it the 'All-I-Can-Do-Stitch'... because basicly... it's all I can do. Haha. I ha…
» hahaha those are awesome!! Love the game, love the costumes! Great job!
» And you nailed it :) Thanks for sharing your photo!
» Well... that just looks awesome, great job!
» I used a marble :) But about any round object that fits can be used to hollow out the c…
» Ok,... now i'm hungry :) Nice instructable!
» Omg... that's some scary stuff, looks so real. That would scare the crap out of me if I…
» Awesome instructable!!
» Thanks, much appreciated!
» I call it the 'All-I-Can-Do-Stitch'... because basicly... it's all I can do. Haha. I ha…
» hahaha those are awesome!! Love the game, love the costumes! Great job!
» And you nailed it :) Thanks for sharing your photo!
» Well... that just looks awesome, great job!
» I used a marble :) But about any round object that fits can be used to hollow out the c…
» Ok,... now i'm hungry :) Nice instructable!
» Omg... that's some scary stuff, looks so real. That would scare the crap out of me if I…
» Awesome instructable!!
» Thanks, much appreciated!
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I just did your LED music box..it worked great and I want to do another project but bigger, I am turning an old electrical lamp into a LED lamp. Why did you use a capacitor instead of a resistor?
Here is a quick prototype version of what you did. for some reason I could only power two 5mm LED's with a 9V power supply, but it still worked great.
http://youtu.be/a9mujTDZpt4
Here is a quick prototype version of what you did. for some reason I could only power two 5mm LED's with a 9V power supply, but it still worked great.
http://youtu.be/a9mujTDZpt4
Sep 11, 2011. 6:00 AMirodriguez5
says:
Uhm john I want to make his led project and since already did and I'm alil confused I thought I'd ask you uhm how does the music play if you use the headphone Jack because I want to use it with my stereo system and Idk how
Sep 8, 2011. 1:37 AMbsalceda tresvalles
says:
Thank you for very easy instructions, you've taken out my fear of working with LEDs. Am going out to buy the stuff needed for the LED Music Light Box. Wish me luck!
welcome dude! Hope you enjoy he instructables :)
Jul 3, 2010. 7:53 PMtechturtle2
says:
I have a surplus of colered LEDs and i need a fun and simple way to use them. I have 20 LEDs in red, yellow and green.
Feb 28, 2010. 11:00 AMEmilinIowa
says:
This circuit should, like any circuit ,have current limiting. A simple resistor in series with the leds could limit the current, protecting the leds and the transistor. The transistor is being used in switching mode ( no bias voltage divider on the base) and will turn on only when the base is more than .6v positive relative to the emitter. When it turns on, the current is only limited by the voltage drops of the emitter to collector voltage added to the voltages dropped across the leds, which are about 1.65 volts each. I would not build it with no current limiting resistor. The resistor should limit the current to less than the max current rating of the lesser of the current max of the transistor or a led. I would limit current to about .02 amps.
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