2 layers170.2 × 109.2 mm
LyraLeft
Malevolti/Lyra
A print at home 70 key split ortho keyboard inspired by the Corne, Lily58 & Sofle. For people who hate layers. This repo is currently a mess but thank you for stopping by.
92 parts18GPL-3.0
2 layers158.9 × 106.7 mm
Lyra HS
Malevolti/Lyra18A print at home 70 key split ortho keyboard inspired by the Corne, Lily58 & Sofle. For people who hate layers. This repo is currently a mess but thank you for stopping by.
- Size
- 158.9 × 106.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 95
- Nets
- 79
- Pads
- 1,164
- Tracks, vias
- 1,237, 189
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 25 Jul 2021
- Updated
- 29 Jan 2022
Overview
Lyra HS is an open-source printed circuit board by Malevolti, from the Malevolti/Lyra repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 158.9 × 106.7 mm with 95 parts on 79 nets, routed with 1,237 tracks and 189 vias.
It is built around the ATMEGA32U4-MU and SRV05-4. Its parts include 35 diodes, 35 switches, 6 capacitors, 6 resistors and 3 connectors. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2
ATMEGA32U4-MU
VQFN-44-EP(7x7)-40℃~+85℃ 10bit 16MHz 1KB 2.5KB 2.7V~5.5V 26 32KB 8 Bit AVR Built-in FLASH VQFN-44-EP(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
SRV05-4
SOT-23-6L-55℃~+150℃ 15V 1pF 4A 5V 5uA 6V 80W ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT-23-6L ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)
Parts
95| Qty | Value | Footprint | References |
|---|---|---|---|
| 35 | D_Small_ALT | Diode_SMD:D_SOD-123F | D1, D2, D3, D4, D19, D20, D21, D22, D23, D24, D25, D37, D38, D39, D40, D41 +19 |
| 35 | SW_Push | Lily58:MX_Choc_Hotswap | SW1, SW2, SW3, SW4, SW19, SW20, SW21, SW22, SW23, SW24, SW25, SW37, SW38, SW39, SW40, SW41 +19 |
| 5 | MountingHole | MountingHole:MountingHole_2.2mm_M2_ISO7380_Pad | H1, H2, H3, H4, H5 |
| 4 | 0.1u | Keeb.io:C_0402 | C2, C3, C4, C6 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R3, R4 |
| 2 | 22 | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R2 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R5, R6 |
| 1 | 10u | Keeb.io:C_0402 | C5 |
| 1 | 16mhz | Crystal:Resonator_SMD_Murata_CSTxExxV-3Pin_3.0x1.1mm | Y1 |
| 1 | 1u | Keeb.io:C_0402 | C1 |
| 1 | ATmega32U4-MU | Package_DFN_QFN:QFN-44-1EP_7x7mm_P0.5mm_EP5.2x5.2mm | U1 |
| 1 | AVR-ISP-6 | Connector_PinSocket_2.54mm:PinSocket_2x03_P2.54mm_Vertical | J2 |
| 1 | AudioJack3 | Keeb.io:TRRS-PJ-320A-Dual-Overlayed | J3 |
| 1 | Computer/Power | Josh-Connectors:USB_C_TYPE-C-31-M-14 | J1 |
| 1 | Polyfuse_Small | Fuse:Fuse_0402_1005Metric | F1 |
| 1 | SRV05-4 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | SW_Push | Keeb.io:SW_SPST_TL3342 | SWRST1 |
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Questions
How big is the Lyra HS PCB?
It measures 158.9 × 106.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Lyra HS use?
95 parts, built around the ATMEGA32U4-MU and SRV05-4. 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.
Where can I download the Lyra HS KiCad files?
From the Malevolti/Lyra repository on GitHub, at the commit this page was made from: the board is pcb/Lyra-HS.kicad_pcb and its schematic pcb/Lyra-HS.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Lyra HS design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).