This Spectrum Audio Analyzer project is nothing other than amazing. It includes a Teensy microcontroller board that drives 2 displays simultaneously at a very high speed. It is capable of doing a frequency analysis of the Audio in realtime to create a Stereo spectrum analyzer of 69 Channels and drive768 leds at the same time.
Yep you understood me correctly! 69 channels in stereo…so that’s actually 138 frequency bins. On top of that, we will be displaying a stereo VU meter on the second display. So more or less we are really dealing with 140 channels. Did I mention that it also drives 768 pixelleds at the same time?
This video is sponsored by @PCBWay They make great PCB board and offer good assembly service. Check out the website at https://www.pcbway.com/
🕮 Manual: No manual, build it, upload the code and press the buttons. One button to select between microphone or line input, one button to select what is displayed on the second screen and one button to change the led pattern on the pixeled matrix. O, we also have some potmeters. One to select the gain, one to set the delay time before the peak falls back tot the stack and one potmeter to set the intensity of the led matrix.
Check out the video:
🕮 Software/ firmware / sketch / documentation:
Sketch: https://github.com/donnersm/TwinPixelAnalyzer/
👨💻 Building instructions:
Instructables: https://www.instructables.com/Twin-Display-Pixel-Matrix-Analyzer/
Schematic: https://github.com/donnersm/TwinPixelAnalyzer/tree/main/hardware
🛒 Buy PCB / Parts:
PCB: https://www.tindie.com/products/markdonners/twin-visualizer-pcb/
Teensy: https://opencircuit.nl/product/teensy-4-1?affiliate=OF4I5VXRPF
Ram: https://opencircuit.nl/product/8-MB-PSRAM-chip-voor-Teensy-4.1?affiliate=OF4I5VXRPF
☕ Buy me coffee
If you like me work, please buy me a coffee to help me burning the midnight oil.
https://www.buymeacoffee.com/MarkDonners
🔀 Links in this video you should check out
DIY-Lab who build the original version with one display
How to add PSRAM to your Teensy
💁♂️ Do you want to sponsor my channel? Feel free to contact me anytime
🔀Let’s connect
Website: https://www.theelectronicengineer.nl
facebook: https://www.facebook.com/TheelectronicEngineer
Instagram: https://www.instagram.com/theelelectronicengineer.nl/
Twitter: https://twitter.com/MarkDonners
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