HardLabs

Phnx

sini6a·phnx·kicad/phnx.kicad_pcb

Phnx PCB layout, top view — open source AVR/Arduino board by sini6a

About the Phnx PCB

Phnx is an open source AVR/Arduino PCB design by sini6a, published on GitHub. It is a 4-layer board measuring 286.3 × 133.4 mm, with 178 components from 22 distinct parts.

Its main chip is the ATmega32U4-A, from the AVR/Arduino family. Other key parts include the USBLC6-2SC6. By type, the board carries 101 diodes, 51 switches, 11 capacitors, 8 resistors, 2 ICs and 2 connectors.

It belongs with the keyboards designs in this gallery.

From the project

PHNX is an ergonomic keyboard featuring 54 MX compatible switches. It is inspired by the Miryoku layout and includes one additional row at the top along with macro keys on both sides. Powered by the famous ATMega32U4 microcontroller, it features a Type C connector with ESD protection.

PHNX is an ergonomic keyboard featuring 54 MX compatible switches. It is inspired by the Miryoku layout and includes one additional row at the top along with macro keys on both sides. Powered by the famous ATMega32U4 microcontroller, it features a Type C connector with ESD protection.

The keyboard is using QMK software and features an addressable LED on each key. Designed using KiCad 8, the boards were sponsored by PCBWay, known for their excellent PCB manufacturing capabilities.

Phnx, from the project README
From the project README

Main components on the Phnx

ATmega32U4-AUSBLC6-2SC6

Phnx bill of materials (BOM)

178 components, 22 distinct parts.

QtyPartRefs
1
ATmega32U4-A
U1
1
USBLC6-2SC6
U2
1
16MHz
Y2
1
USB_C_Receptacle_USB2.0
J1
1
Conn_AVR_TagConnect_TC2030
J3
1
6V 500MA
F1
1
SW_Push
SW55
50
SW_Push_45deg
SW402, SW403, SW405, SW406, SW407, SW408, SW409, SW410 +42
1
LED
D109
50
D_Small
D402, D403, D405, D406, D407, D408, D409, D410 +42
50
SK6812MINI-E
D502, D503, D505, D506, D507, D508, D509, D510 +42
1
220 @ 100MHz
FB1
1
10n
C1
4
100n
C2, C5, C6, C7
2
4u7
C3, C8
1
4n7 250V
C4
1
1u
C9
2
22p
C10, C11
1
10M
R1
2
5k1
R2, R5
Show 2 more
QtyPartRefs
2
22
R3, R4
3
10k
R6, R7, R8

Phnx design files

The KiCad project lives in the sini6a/phnx repository on GitHub; these links point at the commit this page was built from.

Phnx: common questions

What microcontroller does the Phnx use?

The Phnx is built around the ATmega32U4-A, from the AVR/Arduino family.

How big is the Phnx PCB?

The Phnx measures 286.3 × 133.4 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Phnx?

178 components, from 22 distinct parts. The full bill of materials is listed on this page.

Where can I download the Phnx design files?

From the sini6a/phnx repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Phnx design in my own project?

The repository has no license, so all rights stay with sini6a. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Phnx 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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