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# Calcite52
- 52 keys ortho keyboard.
- Kailh Choc V1 low profile switches (PG1350).
- USB Type-C with ESD protection and resettable fuse.
- RP2040 ARM MCU, 16MB external flash.
- One configurable monochrome LED indicator.
- M2 screw mounting holes.
- USB D+/- pads for debugging.
- Powered by [QMK](https://github.com/qmk/qmk_firmware) firmware.
- Support [Vial](https://get.vial.today), edit keymap and configure keyboard in real time.
- JLCPCB's PCBA service available.
## PCB
PCB online preview avaliable [here](https://kicanvas.org/?github=https%3A%2F%2Fgithub.com%2Fsiderakb%2Fcalcite%2Ftree%2Fmain%2FCalcite52%2Fpcb), powered by KiCanvas.
| | Preview |
| :----: | :----------------------------------: |
| Front |  |
| Back |  |
| Layers |  |
### Board Characteristics
- Copper layer count: 2
- Board thickness: 1.6 mm
- Board overall dimensions: 231.14 mm x 97.79 mm
- Min track/spacing: 0.13 mm / 0.13 mm
- Min hole diameter: 0.3 mm
- Castellated pads: No
- Edge card connectors: No
- Plated board edge: No
## Case
- CNC: Designed using [onshape](https://cad.onshape.com/documents/40c7e2089f3d168efe6af68a/w/3670640f6bf03c896decab1c/e/fe064372e5ac08dff53a3881?renderMode=0&uiState=65b3d52ba4a899578972f582). I order aluminum 6061 + bead blast + anodized from PCBWay around 60 USD (June 2023).
- 3D Printing: Designed using FreeCAD. Please note that the 3D printed casing will bend easily and is not recommended.
## Firmware
Vial QMK firmware is available in [siderakb/vial-qmk repo](https://github.com/siderakb/vial-qmk/tree/siderakb/main/keyboards/siderakb/calcite52) (*siderakb/main* branch).
3da885e27This file is pinned to the selected release. Download the original to open it in your design tool.