HardLabs

AudioSpectrumLEDGrid

MTRNord·AudioSpectrumLEDGrid·Hardware/AudioSpectrumLED.kicad_pcb

AudioSpectrumLEDGrid PCB layout, top view — open source AVR/Arduino board by MTRNord

About the AudioSpectrumLEDGrid PCB

AudioSpectrumLEDGrid is an open source AVR/Arduino PCB design by MTRNord, published on GitHub under the AGPL-3.0 license. It is a 2-layer board measuring 41.9 × 72.4 mm, with 17 components from 7 distinct parts.

Its main chip is the Arduino_Nano_v3.x, from the AVR/Arduino family. By type, the board carries 10 inductors, 3 resistors, 2 connectors, 1 module and 1 capacitor.

It belongs with the audio designs in this gallery.

From the project

A PCB and Software to convert an audio mono signal into a grid made of LEDs.

AudioSpectrumLEDGrid, from the project README
From the project README

Main components on the AudioSpectrumLEDGrid

Arduino_Nano_v3.x

AudioSpectrumLEDGrid bill of materials (BOM)

17 components, 7 distinct parts.

QtyPartRefs
1
Arduino_Nano_v3.x
A1
1
Barrel_Jack
J1
1
AudioJack3
J2
10
Led_Strip_Connector
L1, L2, L3, L4, L5, L6, L7, L8 +2
1
CP
C1
1
4,7 k
R1
2
1,8 k
R2, R3

AudioSpectrumLEDGrid design files

The KiCad project lives in the MTRNord/AudioSpectrumLEDGrid repository on GitHub; these links point at the commit this page was built from.

AudioSpectrumLEDGrid: common questions

What microcontroller does the AudioSpectrumLEDGrid use?

The AudioSpectrumLEDGrid is built around the Arduino_Nano_v3.x, from the AVR/Arduino family.

How big is the AudioSpectrumLEDGrid PCB?

The AudioSpectrumLEDGrid measures 41.9 × 72.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the AudioSpectrumLEDGrid?

17 components, from 7 distinct parts. The full bill of materials is listed on this page.

Where can I download the AudioSpectrumLEDGrid design files?

From the MTRNord/AudioSpectrumLEDGrid repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the AudioSpectrumLEDGrid design in my own project?

Yes, under the terms of its AGPL-3.0 license, which MTRNord chose for the repository.

Can I test firmware for the AudioSpectrumLEDGrid without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.

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