sini6a/phnx4PHNX 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 open-source printed circuit board by sini6a, from the sini6a/phnx repository on GitHub. It is a 4-layer board of 286.3 × 133.3 mm with 186 parts on 148 nets, routed with 1,919 tracks and 383 vias.
It is built around the ATMEGA32U4-AU, USBLC6-2SC6 and SK6812MINI-E. Its parts include 101 diodes, 51 switches, 11 capacitors, 8 resistors and 2 ICs. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
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.
The project repository is structured as follows:
kicad/: Contains PCB design files and schematics.gerbers/: Includes Gerber files essential for manufacturing.fimware/: Includes PHNX keyboard mappings and QMK files. This folder should be copied to your QMK directory and renamed to 'phnx'.case/: Consists of 3D print files for both the switch plates and the back cover of the keyboard.The schematic is available in PDF format in the kicad/ directory.
For a comprehensive overview of the schematic, board layout, and the build process, please refer to the following YouTube video:
The case consists of two 3D printed parts. The two plates for each side to put switches on, and the bottom case which will fit the boards. The case has space for installing rubber pads for better grip.
Contributions to PHNX are welcome! Before making any changes, please ensure to open an issue to discuss the proposed modifications.
| Qty | Value | Footprint | References |
|---|---|---|---|
| 50 | D_Small | Diode_SMD:D_SOD-123 | D402, D403, D405, D406, D407, D408, D409, D410, D411, D412, D413, D414, D415, D416, D417, D418 +34 |
| 50 | SK6812MINI-E | LED_SK6812MINI-E_3.2x2.8mm_P1.5mm-INVERTED:LED_SK6812MINI-E_3.2x2.8mm_P1.5mm-INVERTED | D502, D503, D505, D506, D507, D508, D509, D510, D511, D512, D513, D514, D515, D516, D517, D518 +34 |
| 50 | SW_Push_45deg | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW402, SW403, SW405, SW406, SW407, SW408, SW409, SW410, SW411, SW412, SW413, SW414, SW415, SW416, SW417, SW418 +34 |
| 6 | MountingHole | MountingHole:MountingHole_2.2mm_M2_ISO14580 | H1, H2, H3, H4, H6, H8 |
| 4 | 100n | Capacitor_SMD:C_0603_1608Metric | C2, C5, C6, C7 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R6, R7, R8 |
| 2 | 22 | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | 22p | Capacitor_SMD:C_0603_1608Metric | C10, C11 |
| 2 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C3, C8 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric | R2, R5 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | 10M | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | 10n | Capacitor_SMD:C_0603_1608Metric | C1 |
| 1 | 16MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y2 |
| 1 | 1u | Capacitor_SMD:C_0805_2012Metric | C9 |
| 1 | 220 @ 100MHz | Inductor_SMD:L_0805_2012Metric | FB1 |
| 1 | 4n7 250V | Capacitor_SMD:C_0603_1608Metric | C4 |
| 1 | 6V 500MA | Fuse:Fuse_0805_2012Metric | F1 |
| 1 | ATmega32U4-A | Package_QFP:TQFP-44_10x10mm_P0.8mm | U1 |
| 1 | Conn_AVR_TagConnect_TC2030 | Connector:Tag-Connect_TC2030-IDC-NL_2x03_P1.27mm_Vertical | J3 |
| 1 | LED | LED_SMD:LED_0805_2012Metric | D109 |
| 1 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW55 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
It measures 286.3 × 133.3 mm and has 4 copper layers, 1.6 mm thick.
186 parts, built around the ATMEGA32U4-AU, USBLC6-2SC6 and SK6812MINI-E. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
From the sini6a/phnx repository on GitHub, at the commit this page was made from: the board is kicad/phnx.kicad_pcb and its schematic kicad/led.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Its repository states no licence, so its author keeps all rights: ask sini6a before reusing the design.
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