visualStereo1

thingiverse

Here's a Stereo that runs audio signal through an Arduino and then distributes the signal to neoPixel strips in the columns. The two potentiometers allow control of audio gain into the Arduino and control of Hue for color distribution on the neoPixel strips. It's really cool to rock out in the dark! A video of it in action can be found here: https://www.youtube.com/watch?v=iV14Z0pzgw0&feature=youtu.be Instructions: I just finished building and testing this project. A Bill of Materials will be posted soon. To get started, follow Jeremy Blums Tutorial 14 on Op-amp Circuits, then use the Op-Amp circuit you build from that with Chris Wilson's Arduino sketch. The printed parts require a minimum print volume of 170x170x170mm. I printed all parts with 3 perimeters and 25% rectilinear infill, except for handles and switch case which were printed solid. Expect large prints to take at least 30 hours depending on your speeds, so make sure your 3D printer can handle the workload. The base is a 2x8x16" board painted black with a stereo attached using zip ties. A hole pattern drawing file is available to help drill holes (tight group of 4 holes is the back of the stereo). The Electrical Schematic has now been posted. Sources: Jeremy Blum - Tutorial 14 on Op-amp Circuits: http://www.jeremyblum.com/2011/12/25/tutorial-14-for-arduino-holiday-lights-and-sounds/ Chris Wilson - NeoPixel VU Meter Arduino Code: www.youtube.com/watch?v=5bldFRHe6Qc