2 layers80 × 80 mm
2 layers70 × 29.5 mm
Cat ears controller
ReFil/cat-ears-controllerCat Ears controller
- Size
- 70 × 29.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 23
- Nets
- 38
- Pads
- 118
- Tracks, vias
- 275, 82
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 29 Dec 2025
- Updated
- 24 Jun 2026
Overview
Cat ears controller is an open-source printed circuit board by ReFil, from the ReFil/cat-ears-controller repository on GitHub, published under the MIT licence. It is a 2-layer board of 70 × 29.5 mm with 23 parts on 38 nets, routed with 275 tracks and 82 vias.
It is built around the SK6805E-J. Its parts include 7 connectors, 6 resistors, 5 switches, 4 diodes and 1 IC. It belongs with the nRF52 and nRF5x boards of this library.
Main components
1Parts
23| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | R | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5, R6 |
| 4 | SK6805 | LED_SMD:LED_SK6812_EC15_1.5x1.5mm | D1, D2, D3, D4 |
| 4 | SW_Push | Button_Switch_SMD:SW_Push_1P1T_NO_CK_KMR2 | SW2, SW3, SW4, SW5 |
| 2 | Conn_01x02_MountingPin | Connector_JST:JST_SH_BM02B-SRSS-TB_1x02-1MP_P1.00mm_Vertical | J3, J5 |
| 2 | Conn_01x03_MountingPin | Connector_JST:JST_ZH_B3B-ZR-SM4-TF_1x03-1MP_P1.50mm_Vertical | J6, J7 |
| 2 | Conn_01x04_MountingPin | Connector_Molex:Molex_Pico-EZmate_78171-0004_1x04-1MP_P1.20mm_Vertical | J1, J2 |
| 1 | Conn_01x06 | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J4 |
| 1 | SW_SPDT | Button_Switch_SMD:SW_SPDT_PCM12 | SW1 |
| 1 | XIAO-nRF52840-Plus-SMD | seeed:XIAO-nRF52840-Plus-SMD | U1 |
Questions
How big is the Cat ears controller PCB?
It measures 70 × 29.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Cat ears controller use?
23 parts, built around the SK6805E-J. 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 Cat ears controller KiCad files?
From the ReFil/cat-ears-controller repository on GitHub, at the commit this page was made from: the board is cat-ears-controller.kicad_pcb and its schematic cat-ears-controller.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Cat ears controller design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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