This project is a custom-built macropad featuring two rotary encoders and six buttons, designed for managing volume, scrolling pages, and other productivity tasks. It was created for fun and as a way to explore 3D modeling and electronics. The case was 3D printed, combining functionality and a personal touch.
This macropad is a simple and practical device built for everyday use and learning along the way.
- Arduino Micro (Don't use the Nano version, as it doesn't have the HID)
- A few wires
- Keyboard switches
- Encoders HW-040
- 4 neodymium magnets 6x3 mm
- 6 1N4148 diodes
- Some soldering skills
- 3D printer (or a service for 3D printing)
- Install Arduino IDE and drivers
- Clone and open lighthouse.ino
- Open "Library manager" tab
- Search and download "HID-Project" library
- In the upper-left corner select the model of your board
- Connect Arduino
- Press Upload
- Download stl files from 3D Models folder
- Print it out!
- Paint the case however you like to make it uniquely yours
- Solder the wires
- Assemble everything (Use hot glue to securely attach the Arduino)
- To my wonderful Love for helping me paint the case and making it look amazing—thank you for your support and creativity!
- A huge thanks to Joe Scotto for his excellent tutorial on how matrix connections work. Your video was incredibly helpful in understanding the wiring!
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Painting the Case
This was our first time painting a 3D-printed case. We started by priming the surface and then painted it with acrylics, adding a hand-drawn lighthouse for a unique touch!
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Soldering the Wires
A look inside the device, showing how everything is soldered and connected. The HW-040 encoders require 5V to operate properly, but I powered them from the 3.3V pin on the Arduino, which is not the best solution. It works, but keep this in mind if you're planning to replicate the project.
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Finished Device
The final result: a fully functional macropad, ready to use!
