2 layers65 × 30 mm
Rgb to hdmi
hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
36 parts1kGPL-3.0
2 layers111.9 × 77.8 mm
Macropad
vlinGit/MacropadA custom macropad utilizing the Raspberry Pi Pico
- Size
- 111.9 × 77.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 59
- Pads
- 272
- Tracks, vias
- 158, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 7 May 2024
- Updated
- 7 May 2024
Overview
Macropad is an open-source printed circuit board by vlinGit, from the vlinGit/Macropad repository on GitHub. It is a 2-layer board of 111.9 × 77.8 mm with 36 parts on 59 nets, routed with 158 tracks and 0 vias.
Its parts include 16 diodes, 1 resistor and 1 IC. It belongs with the keyboards and input boards and the RP2040 boards of this library.
README
README.mdMacropad
Table of Contents
Introduction
Greetings, It seems you've stubbled upon my macropad project :)! Utilizing everything provided from this repo (with a few exceptions) you should be able to make this simple 4x4 macropad using a Pi Pico:
Now I must set some ground rules and mentions those exceptions from the previous text. This repo assumes you have knowledge of:
- Python
- Kicad
- CircuitPython - This should be installed on your Pi Pico
The next two sections will discuss what the two folders, Macropad and Firmware, in this project do.
Macropad
All the project files (schematic, pcb, and fingerprints) should be in this folder. When opening this within Kicad, you will most likely need to reassign the location of the fingerprints.
Schematic:
PCB:
Parts:
- 16 Kahlil hotswap sockets
- 1 Raspberry Pi Pico
- 16 SMD Diodes
- Header pins for the pico (optional)
- Micro usb wire
- Soldering kit
Here's a spreadsheet containing all the items I used. This spreadsheet doesn't include headers, switches, and keys as I already had these lying around.
Sidenote, I left a place for a reset button for convinence, however, this proved to be the complete opposite. The small button got in the way more often than not so the final build doesn't include it.
Firmware
You will find a lib folder as well as a code.py file in here. The lib folder contains the necessary adafruit library needed for the python file code.py which contains the actual firmware code. These files should be dragged into your Pi Pico after you've installed CircuitPython.
The macropad is designed in a 4x4 matrix with the following pins:
- Rows: GP21, GP20, GP19, GP18
- Columns: GP6, GP7, GP8, GP9
The current python file provides you with two modes:
- Default mode - for media controls
- Function mode - for general purpose binds using F13-F21 keys, mainly for binding macros in software (blender, kritia, etc.)
The modes will be presented in tables, each cell being a key. Every cell labeled null means the key is unassigned. Within the actual code this is represented with a -1.
Default Mode:
| VOLUME DECREMENT | VOLUME INCREMENT | MUTE VOLUME | CHANGE MODE |
| PREVIOUS TRACK | PLAY/PAUSE MEDIA | NEXT TRACK | null |
| null | null | null | null |
| null | null | null | null |
Function Mode:
| LEFT SHIFT | F14 | F15 | CHANGE MODE |
| F13 | F17 | F18 | F19 |
| F16 | F21 | F22 | F23 |
| LEFT CONTROL | F20 | null | SPACE |
Future plans
So, whats planned for the future? I've been using this macropad for a couple days now and here's the following things I plan on implementing soon:
- Proper case - I've created the model, but now just need to get a 3D printer and do some troubleshooting
- Rotary Encoders - Will be great for volume control and zooming in
- Standalone LED + Mode button - Just for mode switching
- IR Sensors - Really looking forward to this one! Plan on adding AC and table height controls using this.
As to what I will remove:
- The reset button - Honestly made it less comfortable to use
- Micro usb- Looking to replace this with a USB-C port
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | D_Small | Diode_SMD:D_SOD-123 | D1, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16 |
| 16 | MX_SW_HS | marbastlib-mx:SW_MX_HS_CPG151101S11_1u | MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8, MX9, MX10, MX11, MX12, MX13, MX14, MX15, MX16 |
| 1 | 5.1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | LOGO | LOGO | 42 |
| 1 | Pico | MCU_RaspberryPi_and_Boards:RPi_Pico_SMD_TH | U1 |
| 1 | SW_Push | Button_Switch_SMD:SW_SPST_PTS645 | RESET |
Questions
How big is the Macropad PCB?
It measures 111.9 × 77.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Macropad use?
36 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 KiCad files?
From the vlinGit/Macropad repository on GitHub, at the commit this page was made from: the board is MacroPad/MacroPad.kicad_pcb and its schematic MacroPad/KiCad-RP-Pico-main/KiCad-RP-Pico-main/Test/Test.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Macropad design in my own project?
Its repository states no licence, so its author keeps all rights: ask vlinGit before reusing the design.
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