Instructables: exploring - technology - electronics - pcb - led http://www.instructables.com Wed, 27 Aug 2014 04:34:39 PDT BLOX v1.01 VU-METER http://www.instructables.com/id/VU-METER-1/ http://cdn.instructables.com/FJT/S8YK/HET0YCZT/FJTS8YKHET0YCZT.SQUARE2.jpg http://cdn.instructables.com/FJT/S8YK/HET0YCZT/FJTS8YKHET0YCZT.SQUARE.jpg http://cdn.instructables.com/FJT/S8YK/HET0YCZT/FJTS8YKHET0YCZT.SMALL.jpg Mock5 A mono VU-Meter with power supply. Parts: 10K potentiometer 1.2K R 470uF cap LM7812 12V transformer MIC BR610 Square Bridge Rectifier LM3915 3x 0.1uF caps. 10 LEDs misc. This is a simple VU-meter that uses the LM3915. The input are the 2 floating connections. It uses 12 V AC that is converted into ...
By: Mock5

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Sat, 30 Mar 2013 11:04:53 PDT
LED Driver (5 LEDs) http://www.instructables.com/id/LED-Driver-5-LEDs/
LED Driver (5 LEDs) - More DIY How To Projects]]> http://cdn.instructables.com/FCO/33TD/HI3TYDE8/FCO33TDHI3TYDE8.SQUARE2.jpg http://cdn.instructables.com/FCO/33TD/HI3TYDE8/FCO33TDHI3TYDE8.SQUARE.jpg http://cdn.instructables.com/FCO/33TD/HI3TYDE8/FCO33TDHI3TYDE8.SMALL.jpg Mock5 This is a simple LED driver/power supply for 5 LEDs. Parts: It uses the LM7812 positive voltage regulator, 2x 0.1uF Capacitors 1000uF/16V Capacitor RBV - 406 rectifier 5 LEDs (I used transparent green) A 12V transformer ~500mA For Typical Forward Voltage use 78 - 100 ohms resistor for Max Forward V...
By: Mock5

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Wed, 13 Mar 2013 12:05:29 PDT
Logic Love Heart http://www.instructables.com/id/Logic-Love-Heart/
Logic Love Heart - More DIY How To Projects]]> http://cdn.instructables.com/F5G/2X7F/HD8TX0HQ/F5G2X7FHD8TX0HQ.SQUARE2.jpg http://cdn.instructables.com/F5G/2X7F/HD8TX0HQ/F5G2X7FHD8TX0HQ.SQUARE.jpg http://cdn.instructables.com/F5G/2X7F/HD8TX0HQ/F5G2X7FHD8TX0HQ.SMALL.jpg passmadd Hello everyone :) This is a Logic Love Heart I created for an old flame this year (we have a kid and we're still good mates, plus I like winding her up). Some say love isn't logical, well it is now! So sit back, grab a beer and I'll show you how I made this. Firstly, I had some fundamentals for t...
By: passmadd

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Sun, 24 Feb 2013 15:28:02 PST
Soldering a LED to the 'Wrong' Side of a PCB http://www.instructables.com/id/Soldering-a-LED-To-The-Wrong-Side-Of-A-PCB/ http://cdn.instructables.com/FJ5/EJ64/H5W8AJI0/FJ5EJ64H5W8AJI0.SQUARE2.jpg http://cdn.instructables.com/FJ5/EJ64/H5W8AJI0/FJ5EJ64H5W8AJI0.SQUARE.jpg http://cdn.instructables.com/FJ5/EJ64/H5W8AJI0/FJ5EJ64H5W8AJI0.SMALL.jpg AndyGadget Why would you want to mount LEDs on the copper side of a single sided board?  How about if you want to mount a board directly behind a front panel with the LEDs showing through holes in the panel.  You can't put them on the usual side because the other components would stop the board fitting flush t...
By: AndyGadget

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Mon, 20 Aug 2012 12:56:41 PDT
LED Sign - Sequencer http://www.instructables.com/id/LED-Sign-Sequencer/
LED Sign - Sequencer - More DIY How To Projects]]> http://cdn.instructables.com/FJO/J5UI/H4AGE5D1/FJOJ5UIH4AGE5D1.SQUARE2.jpg http://cdn.instructables.com/FJO/J5UI/H4AGE5D1/FJOJ5UIH4AGE5D1.SQUARE.jpg http://cdn.instructables.com/FJO/J5UI/H4AGE5D1/FJOJ5UIH4AGE5D1.SMALL.jpg WWC This is an LED sign for my Internet shop here in the Philippines. It lights each letter progressively until all are lit then keeps the word on for one more sequence, then off. Repeat. I didnt use the 2N3053"s shown in the diagram as they are 7 times more expensive than the BD135"s i replaced them w...
By: WWC

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Sun, 22 Jul 2012 19:04:04 PDT
Electronic Controller Device (Analog) http://www.instructables.com/id/Electronic-Circuit-Device/
Electronic Controller Device (Analog) - More DIY How To Projects]]> http://cdn.instructables.com/FYX/A9OC/GZACQEUR/FYXA9OCGZACQEUR.SQUARE2.jpg http://cdn.instructables.com/FYX/A9OC/GZACQEUR/FYXA9OCGZACQEUR.SQUARE.jpg http://cdn.instructables.com/FYX/A9OC/GZACQEUR/FYXA9OCGZACQEUR.SMALL.jpg Sparker94 I made this analog circuit for two reasons. One: To stop my wires from melting due to too much current. Two: To limit the load on the alternator. Instead of the lights on a trailer going through the tail light circuit on the vehicle, which caused mine to melt, It will pull current directly from the ...
By: Sparker94

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Sat, 3 Mar 2012 19:45:04 PST
how to make a very simple NPN transistor tester http://www.instructables.com/id/how-to-make-a-very-simple-NPN-transistor-tester/
how to make a very simple NPN transistor tester - More DIY How To Projects]]> http://cdn.instructables.com/FTF/MEIO/GAPV83OQ/FTFMEIOGAPV83OQ.SQUARE2.jpg http://cdn.instructables.com/FTF/MEIO/GAPV83OQ/FTFMEIOGAPV83OQ.SQUARE.jpg http://cdn.instructables.com/FTF/MEIO/GAPV83OQ/FTFMEIOGAPV83OQ.SMALL.jpg Jimmy Proton in this instructable i will show you how to make a very simple NPN transistor tester. you will need: a NPN transistor (to test)  a 10K OHM resistor a 470 OHM resistor a LED a on/off switch and a 9V battery (5-12V) making it. here are the schematics. and a picture of my finished product.
By: Jimmy Proton

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Fri, 25 Jun 2010 16:49:16 PDT
Throbbing/Fading/Flashing LED with 555 Timer http://www.instructables.com/id/ThrobbingFading-LED-with-555-Timer/
Throbbing/Fading/Flashing LED with 555 Timer - More DIY How To Projects]]> http://cdn.instructables.com/FGE/KV05/FWYHW7MF/FGEKV05FWYHW7MF.SQUARE2.jpg http://cdn.instructables.com/FGE/KV05/FWYHW7MF/FGEKV05FWYHW7MF.SQUARE.jpg http://cdn.instructables.com/FGE/KV05/FWYHW7MF/FGEKV05FWYHW7MF.SMALL.jpg MrBeta This tiny circuit is a simple way to make a fading led without having to program chips or writing code. Just a few simple components and you're ready to fade all day. The end result is a constant fade up and fade down just like a Mac on standby. Try it! See how small you can build it. If you like it...
By: MrBeta

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Thu, 16 Jul 2009 18:47:50 PDT