2 layers137.2 × 83.8 mm
PWA REV2
PubInv/krake
The Krake™ is a Wi-Fi–enabled server using an MQTT broker, which means it can be controlled remotely by other devices ("clients") via the internet.
215 parts9AGPL-3.0
2 layers85.6 × 100 mm
AURA
Vihaan6119/AURAAURA is a custom 75% mechanical keyboard designed and built from the ground up for coding, typing, and gaming. It will feature Bluetooth connectivity, USB-C, hot-swappable switches, RGB lighting, a programmable rotary knob, media and lock controls, a rechargeable battery, and a solid, premium enclosure.
- Size
- 85.6 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 13
- Nets
- 36
- Pads
- 135
- Tracks, vias
- 110, 13
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 7 Oct 2026
- Updated
- 25 Oct 2026
Overview
AURA is an open-source printed circuit board by Vihaan6119, from the Vihaan6119/AURA repository on GitHub. It is a 2-layer board of 85.6 × 100 mm with 13 parts on 36 nets, routed with 110 tracks and 13 vias.
It is built around the EC11E18244AU. Its parts include 7 switches and 1 IC. It belongs with the lEDs and displays boards and the RP2040 boards of this library.
Main components
1README
README.mdAURA
AURA is a custom mechanical desktop controller designed for media navigation and other things basic need in my life. It is built around a Raspberry Pi Pico, it has 6 mechanical keys, an 0.91 inch OLED display, and a multi-function rotary knob.
In simple words, I have made a PCB which has the neccessary areas and cutout (inside the PCB) to solder the parts in.
Here the Rasberry Pi Pico works as the main controller of this project which handels all the working from presseng the switches, turning the knob to the text in the display. It controls almost everything.
For the controls I have used the Key which will help me do a the kind of shortcut which i like to have on it.
The knob is there for the up/down scrolling and the left/right scrolling in PDFs, webpages, CAD apps, 3D modeling, volume control, etc.
The display is for showing wither the time or the current sony which is being play, with basic info in it. (this can also be coustomised from the firmware of the project).
I have specially designed a coustom enclosure for this, which is in 2 parts.
Base part: Here is where the PCB will be sitting. It will be mounted securly by the M3 mounting holes. There is a cutout on the back side of the Base so that we can connect the power/data cable to the Rasberry Pi Pico.
Top Lid: The lid will be placed on the base lid securly. There are required cutouts for the display, the keys and the knob.
I have made the colour of base as the default color, and the top in orange color to differential between them and make it easier for me to make and assemble the full enclosure with the PCB and all the parts. In the final printing, the enclosure will have a black colour (from the black PLA filament from the printing legion).
Instructions AURA enclosure files
The .step file of the PCB is in the folder namedHardware. The name of the exact file is AURA V2.step The rest of the file are in the folder named Enclosure.
The base part is of the name AURA base.step. The top Lid is of the name AURA lid.step. The complete assembly of the enclosure with the PCB is of the name AURA Full Assembly.step.
INSTRUCTIONS TO FOLLOW TO GET THE THE ASSEMBLED .STEP FILE
Unfortunatily, there is a specify way in which you have to open the AURA Full Assembly.step to actully get the the fully assembled file which has the base, top lid and the PCB with all the parts.
This is the way (for this I am using Onshape. I think it will almost similar for all the different softwares):
- uploading the file: Click import (wherever the option is in your software) and select the specific file named AURA Full Assembly.step
- It will take 1-2 mins in importing all the parts.
- Selecting the file: After all the parts are successfully imported, from all the different files, you have to select the one which is named AURA V2 1. This is the file which will contain the fully assembled file.
Key Features
- Microcontroller: Powered by the Raspberry Pi Pico (RP2040).
- Macro Matrix: 6 mechanical keys (
SW2throughSW7). - Interactive OLED Display: A 0.91-inch SSD1306.
- Multi-Function Rotary Encoder (The Crown):
- Default: Vertical scrolling.
- Shift + Rotate: Horizontal scrubbing / zooming.
- Fn + Rotate: System volume control.
- Push Switch: Quick action trigger.
- Smart Power-Saving: Automatic 15-minute inactivity sleep timer to preserve screen life.
- Dynamic Configuration: Easily remap keys without rewriting firmware by editing a simple
config.jsonfile stored directly on the device. - Secure Enclosure Ready: Integrated corner M3 mounting holes (
H1–H4) for robust case assembly.
| Item | Qty | Supplier | Cost/item | Total Cost | Link |
|---|---|---|---|---|---|
| Raspberry Pi Pico | 1 | besomi | $8.00 | $8.00 | Link |
| SSD1306 OLED Display (0.91") | 1 | AliExpress | $1.23 | $1.23 | Link |
| EC11 Rotary Encoder with Switch | 1 | LCSC | $2.22 | $2.22 | Link |
| Cherry MX Mechanical Switches | 10 | AliExpress | $0.71 | $7.10 | Link |
| M3 Screws and Standoffs Set | 30 | ALiExpress | $0.12 | $3.60 | Link |
| Custom PCB (AURA) | 5 | JLC PCB | $0.80 | $4.00 | Link |
| Estimated total shipping | 1 | Printing Legion | $3.00 | $3.00 | Link |
Tax & shipping: $15.59
Total: $44.75
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | SW_Push | Button_Switch_Keyboard:SW_Cherry_MX_1.00u_PCB | SW2, SW3, SW4, SW5, SW6, SW7 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 1 | EC11E18244AU | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW1 |
| 1 | ER_OLEDM0.91_1x-I2C | Display:ER_OLEDM0.91_1x-I2C | U1 |
| 1 | RaspberryPi_Pico | Module:RaspberryPi_Pico_SMD_HandSolder | A1 |
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Questions
How big is the AURA PCB?
It measures 85.6 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the AURA use?
13 parts, built around the EC11E18244AU. 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 AURA KiCad files?
From the Vihaan6119/AURA repository on GitHub, at the commit this page was made from: the board is Hardware/AURA.kicad_pcb and its schematic Hardware/AURA.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the AURA design in my own project?
Its repository states no licence, so its author keeps all rights: ask Vihaan6119 before reusing the design.