4 layers99 × 53.3 mm
PSLab
fossasia/pslab-hardware
PSLab Hardware Design and Schematics https://pslab.io
199 parts1.7kApache-2.0
2 layers93.8 × 74 mm
Lectrern hackpad
yakla/minecraft-lectern-hackpad- Size
- 93.8 × 74 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 24
- Pads
- 76
- Tracks, vias
- 159, 11
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 25 Mar 2026
- Updated
- 28 Mar 2026
Overview
Lectrern hackpad is an open-source printed circuit board by yakla, from the yakla/minecraft-lectern-hackpad repository on GitHub, published under the MIT licence. It is a 2-layer board of 93.8 × 74 mm with 18 parts on 24 nets, routed with 159 tracks and 11 vias.
It is built around the WS2812B. Its parts include 10 diodes, 6 switches, 1 IC and 1 connector.
Main components
1README
README.mdMinecraft Lectern Hackpad
A custom 6-key mechanical macro pad inspired by the Minecraft Lectern, designed for the Hack Club Blueprint.
The Vision
the idea was i fast hackpad project with cool visuals. so i made it with a minecraft lectern block.
Technical Specs
- Controller: Seeed Studio XIAO RP2040
- Keys: 6 Mechanical Switches (3x2 Matrix)
- Visuals: 128x32 OLED Display + WS2812B RGB LEDs
- Firmware: KMK / CircuitPython
Hardware
- XIAO RP2040 – The microController
- 6 x Mechanical Switches - hackpad keys
- 1 x 0.91" White OLED – Crisp 128x32 display for real-time status and custom graphics.
- 4 x WS2812B RGB LEDs – Integrated lighting for that essential setup flex.
- Custom 2-Layer PCB – Engineered in KiCad
- 6 x 1N4148W Diodes
Design Process
- CAD: Designed in Onshape. https://cad.onshape.com/documents/4aa1c7f92bdb34f3150a863a/w/03df906dbdf565c718d04fe4/e/68b5d359d9c8e5f142904c5d?renderMode=0&uiState=69c481ee307fe18aded3200f
- PCB: Custom 2-layer board designed in KiCad with SMD diode protection. |
cad
pcb design
Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | D | Diode_SMD:D_1206_3216Metric_Pad1.42x1.75mm_HandSolder | D1, D2, D3, D4, D5, D6 |
| 6 | SW_Push | hackclub hackpad clean extras-orpheuspad_pcb_libraries_MX_V2_MX_Solderable:MX-Solderable-1U | SW1, SW2, SW3, SW4, SW5, SW6 |
| 4 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D7, D8, D9, D10 |
| 1 | MOUDLE-SEEEDUINO-XIAO | footprints:XIAO-Generic-Hybrid-14P-2.54-21X17.8MM | U1 |
| 1 | oled connectors | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J1 |
Questions
How big is the Lectrern hackpad PCB?
It measures 93.8 × 74 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Lectrern hackpad use?
18 parts, built around the WS2812B. 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 Lectrern hackpad KiCad files?
From the yakla/minecraft-lectern-hackpad repository on GitHub, at the commit this page was made from: the board is lectrern hackpad PCB/lectrern hackpad.kicad_pcb and its schematic lectrern hackpad PCB/lectrern hackpad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Lectrern hackpad design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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