

Qalble
An Alice-like 35% 3d printed mechanical keyboard using ItsyBitsy dev boards
- Size
- 224.8 × 89.9 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 81
- Nets
- 67
- Pads
- 458
- Tracks, vias
- 322, 19
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 24 Jan 2022
- Updated
- 2 Jan 2023
Overview
Qalble is an open-source printed circuit board by somepin, from the somepin/qalble repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 224.8 × 89.9 mm with 81 parts on 67 nets, routed with 322 tracks and 19 vias.
Its parts include 36 diodes, 2 ICs, 2 connectors and 1 switch. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
README
pcb/readme.mdPCB Renders

Parts
81| Qty | Value | Footprint | References |
|---|---|---|---|
| 36 | D_Small | Keebio-Parts:Diode-Hybrid-Back | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +20 |
| 30 | MX-NoLED | MX_Only:MXOnly-1U-NoLED | MX1, MX2, MX12, MX13, MX14, MX15, MX16, MX17, MX18, MX19, MX20, MX22, MX23, MX24, MX25, MX26 +14 |
| 2 | MX-NoLED | MX_Only:MXOnly-1.25U-NoLED | MX10, MX11 |
| 2 | RotaryEncoder_Switch | Keebio-Parts:RotaryEncoder_EC11 | EN1, EN2 |
| 1 | Adafruit_ItsyBitsy_nRF52840 | adafruit:ItsyBitsy nRF52840 | U1 |
| 1 | Adafruit_Lipo_Backpack | adafruit:Trinket Lipo Backpack | U2 |
| 1 | Conn_01x02 | adafruit:Backpack Battery Jumper | J2 |
| 1 | Conn_01x02_Female | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J1 |
| 1 | LOGO | backsilk:B.SilkS_g984 | G*** |
| 1 | LOGO | somepin-logo:F.SilkS_g125820 | G*** |
| 1 | MX-NoLED | MX_Only:MXOnly-2.25U-ReversedStabilizers-NoLED | MX33 |
| 1 | MX-NoLED | MX_Only:MXOnly-1.75U-NoLED | MX21 |
| 1 | MX-NoLED | MX_Only:MXOnly-2U-ReversedStabilizers-NoLED | MX34 |
| 1 | MX-NoLED | MX_Only:MXOnly-1.5U-NoLED | MX30 |
| 1 | SW_SPDT | Button_Switch_THT:SW_CuK_OS102011MA1QN1_SPDT_Angled | SW1 |
Questions
How big is the Qalble PCB?
It measures 224.8 × 89.9 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Qalble use?
81 parts. 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 Qalble KiCad files?
From the somepin/qalble repository on GitHub, at the commit this page was made from: the board is pcb/QALBLE.kicad_pcb and its schematic pcb/QALBLE.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Qalble 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).
Similar boards
- 2 layers162.9 × 178.9 mm

- 2 layers177.2 × 114.3 mm

8-Bit CPU 32k
slu4coder/Minimal-UART-Computer-1-2
Legacy: Version 1 and 2 of my TTL-only CPU featuring UART I/O, an expansion port, 512KB SSD at up to 10MHz clock speed
81 parts184 - 2 layers

- 2 layers64 × 55 mm

Zynthiandac bk2
zynthian/zynthian-hw
Zynthian hardware stuff: PCBs, schemes, parts specifications, pin assignment, ...
81 parts156 - 2 layers

- 2 layers41.9 × 62.8 mm

- 2 layers38.6 × 38.6 mm

IotLedDriver
BerkeleyHCI/PolymorphicBlocks
A Python-based hardware description language for PCBs for higher-level (block-diagram / system-architecture level) PCB design through libraries of directly reusable subcircuit generators.
81 parts94BSD-3-Clause - 2 layers98.5 × 45.4 mm

Idawgz32
ChrisChrisLoLo/idawgz32
A full 32 key mechanical keyboard that can be made for only $5
81 parts77GPL-3.0