HardLabs

Pegasus

melonbred·pegasus·kicad/pegasus_kicad.kicad_pcb

Pegasus PCB layout, top view — open source AVR/Arduino board by melonbred
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About the Pegasus PCB

Pegasus is an open source AVR/Arduino PCB design by melonbred, published on GitHub under the MIT license. It is a 2-layer board measuring 242.9 × 76.2 mm, with 109 components from 20 distinct parts.

Its main chip is the ATMEGA32U4-MU, from the AVR/Arduino family. By type, the board carries 45 LEDs, 44 diodes, 9 capacitors, 4 resistors, 1 IC and 1 crystal.

It belongs with the keyboards designs in this gallery.

From the project

WKL 12.75u 40% Keyboard

The Pegasus is a 12.75u layout with 0.75u "WKL" blockers.

Group buy for this keyboard ran through P3D Store on May 21st, 2022, and all group buy orders were shipped in January, 2023. Extra units were sold on January 25th, 2023. The project was successfully completed in February, 2023.

An album of builds done by the community can be found here.

This repository includes kicad directory and pcb production files.

Pegasus, from the project README
From the project README

Main components on the Pegasus

ATMEGA32U4-MU

Pegasus bill of materials (BOM)

109 components, 20 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ATMEGA32U4-MU
ATmega32U4-MU
U1
1
16MHZ
16mHz
Y1
1
CONN_01X04
Conn_01x04
J1
2
Rotary_Encoder_Switch
ENC1, ENC2
1
500MA
500mA
F1
1
SW_Push
SW1
34
MX_Only
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +26
2
MX_Only
MX12, MX25
5
MX_Only
MX13, MX37, MX38, MX43, MX44
1
MX_Only
MX24
1
MX_Only
MX40
1
MX_Only
MX41
1
MX_Only
MX45
44
1N4148
D1, D2, D3, D4, D5, D6, D7, D8 +36
5
0.1UF
0.1uF
C1, C2, C3, C5, C6
1
10NF
10nF
C4
2
22PF
22pF
C8, C9
1
1UF
1uF
C10
2
10K
10k
R1, R4
2
22
R2, R3

Pegasus design files

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

Pegasus: common questions

What microcontroller does the Pegasus use?

The Pegasus is built around the ATMEGA32U4-MU, from the AVR/Arduino family.

How big is the Pegasus PCB?

The Pegasus measures 242.9 × 76.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Pegasus?

109 components, from 20 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 Pegasus design files?

From the melonbred/pegasus repository on GitHub, which has the KiCad layout and the BOM; the links under Design files point to each one.

Can I use the Pegasus design in my own project?

Yes, under the terms of its MIT license, which melonbred chose for the repository.

Can I test firmware for the Pegasus 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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