- 3.5MM AUDIO SOLIDWORKS 2014 DOWNLOAD HOW TO
- 3.5MM AUDIO SOLIDWORKS 2014 DOWNLOAD UPDATE
- 3.5MM AUDIO SOLIDWORKS 2014 DOWNLOAD FULL
3.5MM AUDIO SOLIDWORKS 2014 DOWNLOAD HOW TO
See this video for a demonstration and page 11 of the LM3914's datasheet for instructions on how to connect multiple chips.
I owe a special thank you to the SoHa SMART makerspace for letting me use their laser cutter for this project.
3.5MM AUDIO SOLIDWORKS 2014 DOWNLOAD FULL
Head on to the next step for a full materials list - but first, a quick note about some of the resources I used: While there are already a handful of Instructables about using the LM3914, I'm hoping this new one can contribute two things: a very clear explanation of how the circuit works along with assembly instructions, and a way to make aesthetically-pleasing LED towers that will look nice on a computer desktop, instead of just sticking all the LEDs on a breadboard. So, using two of the chips with a simple circuit and stereo sound is sufficient to drive two separate volume towers. The chip can drive a bar of 10 LEDs proportionally to an analog input, with no microcontroller required. This project lies somewhere in between - it uses a handy "LED driver" chip called the LM3914. They range from rather simple, like using a transistor to drive a single LED to using an Arduino or a Raspberry Pi to make an audio equalizer.
To give credit where credit is due - if you search Instructables, there are a lot of "make LEDs respond to music" type projects. This Instructable will give you complete directions to assemble the required circuit (even if you have no electronics experience - you can even do it without soldering), build two LED towers, and hook them up to an audio input so you can simultaneously drive them and listen to music. So, I set out to find out how they worked, and build my own "mini" desktop version that would go nicely with computer speakers, instead of a big living room stereo. Many of the videos showed the end result, and maybe a slideshow of the assembly process, but lacked complete build details or a circuit diagram. The inspiration for this project started when I saw a variety of awesome stereo LED towers on YouTube (also referred to as VU meters).
3.5MM AUDIO SOLIDWORKS 2014 DOWNLOAD UPDATE
Update December 2014: a kit containing all the circuit parts for this project is now available from Jameco Electronics.