Orcapad

Orcapad

A macropad with 9 keys, a rotary encoder, an OLED screen, and a few LEDs! Made to streamline Onshape CAD development.

Features:

• 128x32 OLED Display with basic informational UI
• 4 keyboard layers (see firmware section)
• LED Bar to indicate active keyboard layer
• Underglow through a diffusion layer
• 8 Keys
• 1 Rotary encoder
• Orca theme bc orcas are cool :)

How To Use

1. Hold the RESET (R) button on the XIAO RP2040 while plugging it in.
2. Wait for OS to detect the device
3. Drop the firmware.uf2 onto the RPI-RP2 drive.
4. Wait for Orcapad to become available

For more help consult the QMK Docs here
For macros & mapping checkout the Firmware section

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CAD

It is held together with M3 screws & heatset inserts. It uses 3 3D-Printed pieces: one as the bottom , one as the top, and one thin layer in the middle to act as a diffusion layer for the LEDs.

PCB

Schematic:

PCB:

Firmware

Orcapad uses QMK firmware.

• The rotary encoder changes volume (left -> volume down, right -> volume up). Press to cycle layers.
• The 8 keys act as macros for Onshape shortcuts
  • The first layer is for the Assembly Studio, the second for the Part Studio, and the third for editing Sketches
  • On the last layer they change the underglow lighting, and the screen changes to show information on the RGB lights

Default Layer Macros:

Assembly Studio (1)

Part Studio (2)

Sketch Editor (3)

RGB Layer** (4)

*I want to add another QMK keymap option that has Shift here instead of Section View (X). This would enable more shortcuts. When I do this I will also add a list of my Onshape Shortcut configurations to make it easier to replicate.
** These are QMK-specific, so there are no equivalent keys.

• The OLED has two screens
  • When on layers 1-3: the "home screen" shows:
  • When on layer 4: the "rgb screen" shows:

I'm planning to add RAW Hid support so that the volume slider actually shows system volume level, and VIM support for easier customization.

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BOM

• 1x SEED XIAO RP2040
• 8x Cherry MX-Style switches
• 8x DSA keycaps
• 9x 1N4148 Diodes
• 1x EC11 Rotary encoder
• 1x 0.91" 128x32 OLED display
• 14x SK6812 MINI-E RGB LEDs
• 6x M3x16mm screws
• 6x M3x5mmx4mm heatset inserts
• 1x Case (3 3D-printed parts)

Exploded view:

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Credits!

Shout out to Hack Club and their Stardance Challenge for inspiring me to make this macropad, and many more things that are to come!

Designs from carotart on PngTree in my OLED GUI and on my encoder's knob:
orca PNG Designed By carotart from https://pngtree.com/freepng/dynamic-black-and-white-killer-whale-designs-portraying-marine-life-strength-with-playful-curvature-in-unique-glyph-compositions-for-branding-suite-vector_23644140.html?sol=downref&id=bef

I used some hackclub and stardance challenge logos on my PCB:
https://pfp.hackclub.com/sources

3D-Model for DSA keycaps by zim cad:
https://grabcad.com/library/dsa-keycap-for-cherry-mx-switches-1

Other assets were probably from the following site's "Resource's and Tips" section:
https://hackpad.hackclub.com/resources