2 layers60 × 30 mm
Controller
google/mozc-devices
Circuit diagrams and firmware source code for Gboard DIY keyboards
11 parts3kApache-2.0
2 layers54 × 85.6 mm
Macropad LP
leunknown/MacroCard-LP18 Key Macro Pad Kailh Choc
- Size
- 54 × 85.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 11
- Nets
- 43
- Pads
- 162
- Tracks, vias
- 33, 4
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 26 Apr 2022
- Updated
- 1 Jun 2022
Overview
Macropad LP is an open-source printed circuit board by leunknown, from the leunknown/MacroCard-LP repository on GitHub, published under the MIT licence. It is a 2-layer board of 54 × 85.6 mm with 11 parts on 43 nets, routed with 33 tracks and 4 vias.
Its parts include 8 connectors and 1 IC. It belongs with the keyboards and input boards and the RP2040 boards of this library.
README
README.mdMacroCard-LP
A simple credit card sized PCB made for an 8 Key Macropad powered by a Raspberry Pi Pico
Parts Needed:
- 8x Kailh Low Profile Choc Switches (any Low Profile Choc switch you desire) (From MKUltra)
- 8x Kailh Low Profile Choc Hotswap sockets (From MKUltra)
- 8x Kailh Low Profile Choc Keycaps (regular MX style keycaps would not work) (From MKUltra)
- 1x Raspberry Pi Pico
- 2x 20 male header pins
- 2x 20 female header pins
Why I chose these parts
- Raspberry Pi Pico is cheap and flexible in terms of what Pin headers and it supports Python, C, and Arduino
- Male and female headers since I don't want to solder the parts directly onto the PCB and make more space for additional keys
- Kailh LP switches since I wanted a low profile macropad.
Instructions
-
First solder the Kailh hotswap sockets to the back. An easy way to do it is to put solder on one side of the PCB contact, then solder one side and then the other afterwards.
-
Put Male headers (long side) on breadboard and afterwards put the pico on the pins and solder. We do it this way to ensure the header pins are straight.
-
Put the Female header pins onto the pico pins, align it with the back of the PCB (where there is an image of a person and solder the Female headers in place.
-
Solder the rest of the SMD hotswap sockets by first tinning one pad, then placing the socket and heat up the part touching the tinned pad. Afterwards, solder the other pad. Repeat this process until all sockets are soldered on.
-
To code the Pico, pick a programming language to use and code!
Final Product
MISC
- I like getting parts from MKUltra as their parts are cheaper and relatively more resonable than other vendors. (unless you want to wait for a month from AliExpress)
Parts
11| Qty | Value | Footprint | References |
|---|---|---|---|
| 1 | LOGO | Library:piplup | G*** |
| 1 | LOGO | Library:piplup mirrored | G*** |
| 1 | Pico | MCU_RaspberryPi_and_Boards:RPi_Pico_SMD_TH | U1 |
| 1 | switch 1 | Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1V2 | J1 |
| 1 | switch 2 | Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1V2 | J2 |
| 1 | switch 3 | Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1V2 | J3 |
| 1 | switch 4 | Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1V2 | J4 |
| 1 | switch 5 | Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1V2 | J5 |
| 1 | switch 6 | Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1V2 | J6 |
| 1 | switch 7 | Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1V2 | J7 |
| 1 | switch 8 | Switch_Keyboard_Hotswap_Kailh:SW_Hotswap_Kailh_Choc_V1V2 | J8 |
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Questions
How big is the Macropad LP PCB?
It measures 54 × 85.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Macropad LP use?
11 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 Macropad LP KiCad files?
From the leunknown/MacroCard-LP repository on GitHub, at the commit this page was made from: the board is Macropad LP/Macropad LP.kicad_pcb and its schematic Macropad LP/Macropad LP.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Macropad LP 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).