2 layers57 × 55.2 mm
LogicAnalyzer
gusmanb/logicanalyzer
24 channel, 100Msps logic analyzer hardware and software
10 parts5.1kGPL-3.0
2 layers80.5 × 54.1 mm
L3MON hackpad
FlashLemonL/Hackpad-L3M0NMy first ever hardware, CAD and 3D modelled project. it is a macro pad that I will use to quickly open up different apps and study resources.
- Size
- 80.5 × 54.1 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 10
- Nets
- 16
- Pads
- 69
- Tracks, vias
- 58, 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 Nov 2025
- Updated
- 17 Dec 2025
Overview
L3MON hackpad is an open-source printed circuit board by FlashLemonL, from the FlashLemonL/Hackpad-L3M0N repository on GitHub. It is a 2-layer board of 80.5 × 54.1 mm with 10 parts on 16 nets, routed with 58 tracks and 4 vias.
Its parts include 7 switches, 1 IC and 1 connector. It belongs with the RP2040 boards of this library.
README
README.mdHackpad-L3M0N
My first ever hardware, CAD and 3D modelled project. it is a macro pad that i need to use since my keyboard is missing some keys and macros will be useful to open up study resources.
3D Model of PCB
Parts in the build
- 6x Cherry MX Switches
- 1x 0.91 inch OLED display
- 1x XIAO RP2040
- 6x Blank DSA Keycaps
- 1x EC11 Rotary encoders
- 4x M3x16 Bolt
- 4x M3 Heatset
| Schematic | PCB | Assembled Case |
|---|---|---|
 |  |  |
Assembled Case With Top Off
| Front Expanded | Back Expanded | Front Corner | Back Corner |
|---|---|---|---|
 |  |  |  |
Parts
10| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW1, SW2, SW3, SW4, SW5, SW6 |
| 1 | Conn_01x04_Pin | opl2:SSD1306-0.91-OLED-4pin-128x32 | J1 |
| 1 | LOGO | opl2:front | G*** |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW8 |
| 1 | XIAO-RP2040-DIP | Seeed Studio XIAO Series Library:XIAO-RP2040-DIP | U1 |
Questions
How big is the L3MON hackpad PCB?
It measures 80.5 × 54.1 mm and has 2 copper layers, 1.6 mm thick.
What parts does the L3MON hackpad use?
10 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 L3MON hackpad KiCad files?
From the FlashLemonL/Hackpad-L3M0N repository on GitHub, at the commit this page was made from: the board is PCB/L3MON hackpad.kicad_pcb and its schematic PCB/L3MON hackpad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the L3MON hackpad design in my own project?
Its repository states no licence, so its author keeps all rights: ask FlashLemonL before reusing the design.
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