HardLabs

Fourier left

IndianBoy42·keyboard-pcbs·fourier/fourier/fourier-left/fourier-left.kicad_pcb

Fourier left PCB layout, top view — open source AVR/Arduino board by IndianBoy42

About the Fourier left PCB

Fourier left is an open source AVR/Arduino PCB design by IndianBoy42, published on GitHub. It is a 2-layer board measuring 124.4 × 80.4 mm, with 68 components from 17 distinct parts.

Its main chip is the ATMEGA32U2-AU, from the AVR/Arduino family. Other key parts include the PRTR5V0U2X. By type, the board carries 35 LEDs, 4 connectors, 2 ICs and 2 resistors.

It belongs with the keyboards designs in this gallery.

From the project

Files for my keyboard PCBs, derived or original

Fourier Keyboard PCB ====================

Misc Info --------- - Rev. 1.2 added 1.25u/1u option at the inner two keys of each half, QMK support hasn't been added for those two new keys yet - Keyboard Layout Editor: Fourier 1.2 layout

Fourier left, from the project README
From the project README

Main components on the Fourier left

ATMEGA32U2-AUPRTR5V0U2X

Fourier left bill of materials (BOM)

68 components, 17 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA32U2-AU
ProMicro
U1
1
PRTR5V0U2X
TRRS
U2
1
VCC
J1
1
RGB
J3
1
C6
J6
1
GND
J7
24
D
D_A1, D_A2, D_A3, D_A4, D_A5, D_A6, D_B1, D_B2 +16
1
Extra Data
W2
22
SW_PUSH
SW_A1, SW_A2, SW_A3, SW_A4, SW_A5, SW_A6, SW_B2, SW_B3 +14
6
SW_PUSH
SW_B1, SW_Cb1, SW_D1, SW_D3, SW_Db3, SW_Dc5
1
SW_PUSH
SW_C1
1
SW_PUSH
SW_D5
3
SW_PUSH
SW_Db1, SW_Db2, SW_Dc3
1
SW_PUSH
SW_Db5
1
Reset
SW_RST1
1
10K
4.7k
R1
1
4.7k
R2

Fourier left design files

The KiCad project lives in the IndianBoy42/keyboard-pcbs repository on GitHub; these links point at the commit this page was built from.

Fourier left: common questions

What microcontroller does the Fourier left use?

The Fourier left is built around the ATMEGA32U2-AU, from the AVR/Arduino family.

How big is the Fourier left PCB?

The Fourier left measures 124.4 × 80.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Fourier left?

68 components, from 17 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Fourier left design files?

From the IndianBoy42/keyboard-pcbs repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Fourier left design in my own project?

The repository has no license, so all rights stay with IndianBoy42. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Fourier left 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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