2 layers100 × 100 mm
Hydromisc
hydromisc/hydromisc
Open hardware to measure EC and pH, drive pumps, and otherwise manage a mid-size hydroponic grow over Wi-Fi.
179 parts526
2 layers318.5 × 126.5 mm
Keyboard
hjw1112/customboardThis is a custom built mechanical keyboard. Everything except switches and keycaps are custom built including pcb and case!
- Size
- 318.5 × 126.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 179
- Nets
- 119
- Pads
- 661
- Tracks, vias
- 832, 97
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 1 Jun 2025
- Updated
- 26 Jun 2025
Overview
Keyboard is an open-source printed circuit board by hjw1112, from the hjw1112/customboard repository on GitHub. It is a 2-layer board of 318.5 × 126.5 mm with 179 parts on 119 nets, routed with 832 tracks and 97 vias.
Its parts include 80 diodes, 12 switches, 5 resistors, 2 capacitors and 2 ICs. It belongs with the keyboards and input boards and the nRF52 and nRF5x boards of this library.
README
README.mdCustomboard!
This is a custom built mechanical keyboard. Everything except switches and keycaps are custom built including pcb and case!
I always wanted to get a mechanical keyboard but It was to expensive to get. But, I learnt how to make simple macropad by hack club event "hackpad" and started working on this. Also, I liked the idea because everything was customizable including silkscreen on PCB and every behavior of keyboard.
You can work on the same project or benchmark this if you want to. I have all source file or link to source file of the project in this repo :)
PCB
Schematic
Case
BOM
Custom Keyboard BOM (Bill of Materials)
| Component | Price (USD) | Price (EUR) | Source |
|---|---|---|---|
| Nice!nano compatible board | $4.86 | €4.26 | Aliexpress |
| Kailh hotswap sockets | $8.52 | €7.47 | Aliexpress |
| Akko V3 Pro Cream Switches | $33.21 | €29.13 | Aliexpress |
| 0.91 inch OLED | $1.01 | €0.89 | Aliexpress |
| TCA9555 expansion board | $3.52 | €3.09 | Aliexpress |
| Stabilizers | $11.92 | €10.46 | Aliexpress |
| EC11 encoder | $5.07 | €4.45 | Aliexpress |
| 1N4148 Diodes | $1.45 | €1.27 | Aliexpress |
| 0603 SMD 1000nF capacitor | $1.36 | €1.19 | Aliexpress |
| 0603 SMD 4.7k resistor | $1.12 | €0.98 | Aliexpress |
| M2.5 heatset insert | $2.44 | €2.14 | Aliexpress |
| M2.5 screws | $5.48 | €4.81 | Aliexpress |
| Foam | $6.48 | €5.68 | Aliexpress |
| Keycaps | $16.89 | €14.82 | Aliexpress |
| Standoff | $3.23 | €2.83 | Aliexpress |
| Battery | $6.50 | €5.70 | Aliexpress |
| JST PH2.0 male connector | $1.87 | €1.64 | Aliexpress |
| Cable | $11.92 | €10.46 | Aliexpress |
| PCB | $19.80 | JLC PCB |
Total: $146.65
Parts
179| Qty | Value | Footprint | References |
|---|---|---|---|
| 80 | 1N4148 | Diode_THT:D_DO-35_SOD27_P7.62mm_Horizontal | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +64 |
| 69 | SW_Push_45deg | cherry_hot:CherryMX_1.00u_KailhSocket | SW/1, SW/left1, SW2/esc1, SW10/2, SW11/w1, SW12/s1, SW13/x1, SW14/f3, SW15/3, SW16/e1, SW17/d1, SW18/c1, SW19/f4, SW20/4, SW21/r1, SW22/f1 +53 |
| 5 | 4.7k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R3, R4, R5 |
| 3 | SW_Push_45deg | cherry_hot:CherryMX_1.25u_KailhSocket | SW81/Lctrl1, SW82/win1, SW83/Lalt1 |
| 2 | C_Small | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2 |
| 2 | SW_Push_45deg | cherry_hot_stab:CherryMX_2.25u_KailhSocket_StabWireBottom | SW61/Enter1, SW65/Lshift1 |
| 2 | SW_Push_45deg | cherry_hot:CherryMX_1.50u_KailhSocket | SW33/Tab1, SW46/Backslash1 |
| 2 | SW_Push_45deg | cherry_hot:CherryMX_1.75u_KailhSocket | SW49/capslock1, SW76Rshift1 |
| 1 | Conn_01x02 | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J2 |
| 1 | LOGO | LOGO | G*** |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm_MountingHoles | SW1 |
| 1 | SW_Push_45deg | cherry_hot_stab:CherryMX_6.25u_KailhSocket_StabWireBottom | SW86/space1 |
| 1 | SW_Push_45deg | cherry_hot_stab:CherryMX_2.00u_KailhSocket_StabWireBottom | SW30/backspace1 |
| 1 | TCA9555DBR | Package_SO:SSOP-24_5.3x8.2mm_P0.65mm | U1 |
| 1 | nice_nano_v2 | Library:nice nano v2 final | U2 |
| 1 | ~ | KiCad-SSD1306-0.91-OLED-4pin-128x32.pretty-master:SSD1306-0.91-OLED-4pin-128x32 | J1 |
The 173 most common of 179 parts.
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Questions
How big is the Keyboard PCB?
It measures 318.5 × 126.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keyboard use?
179 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 Keyboard KiCad files?
From the hjw1112/customboard repository on GitHub, at the commit this page was made from: the board is PCB/keyboard.kicad_pcb and its schematic PCB/keyboard.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keyboard design in my own project?
Its repository states no licence, so its author keeps all rights: ask hjw1112 before reusing the design.