4 layers180.3 × 164.8 mm
Rotonometron PCB
Zoestra/Rotonometron
Split Keyboard PCB with all the bells and whistles
147 partsGPL-3.0
2 layers426.4 × 498.2 mm
Rotonometron v1
Zoestra/RotonometronSplit Keyboard PCB with all the bells and whistles
- Size
- 426.4 × 498.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 294
- Nets
- 201
- Pads
- 1,984
- Tracks, vias
- 1,799, 21
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 13 Jul 2022
- Updated
- 2 Mar 2025
Overview
Rotonometron v1 is an open-source printed circuit board by Zoestra, from the Zoestra/Rotonometron repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 426.4 × 498.2 mm with 294 parts on 201 nets, routed with 1,799 tracks and 21 vias.
It is built around the SK6812 and MCP23018-E/SP. Its parts include 135 diodes, 92 switches, 48 resistors, 8 transistors and 4 connectors. It belongs with the keyboards and input boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2
SK6812
SMD-4P,5.4x5mm-40℃~+85℃ 0.6mA 1.6mm 120° 160mcd~320mcd 1kHz 2000V 280mcd~515mcd 3.7V~5.5V 460nm~470nm 520nm~530nm 620nm~625nm 800Kbit/s 815mcd~1275mcd Built-in power-on reset circuit Semi-transparent lens SMD-4P,5.4x5mm RGB LEDs(Built-in IC) ROHSOPSCO OptoelectronicsRGB LEDs(Built-In IC)
MCP23018-E/SP
SPDIP-28-40℃~+125℃ 1.8V~5.5V 3.4MHz I2C Interrupt Output SPDIP-28 I/O Expanders ROHSMicrochip TechnologyI/O Expanders
README
README.mdRotonometron
Split Keyboard PCB with all the bells and whistles THIS PROJECT IS INCOMPLETE DO NOT ATTEMPT TO REPRODUCE
Parts
294| Qty | Value | Footprint | References |
|---|---|---|---|
| 80 | DIODE-KIT | Custom:D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D1, D10, D10, D11, D11, D12, D12, D13, D13, D14, D14, D15, D15, D16, D16 +64 |
| 76 | HECKIN_LED_SWITCH | Custom:xX_Super_Heckin_Valid_MX_CHOC_SK6812MINIE_ONESIDE_KEYSWITCH_UwU_Xx | SW10, SW10, SW11, SW11, SW12, SW12, SW13, SW13, SW14, SW14, SW15, SW15, SW16, SW16, SW17, SW17 +60 |
| 55 | SK6812 | Keebio-Parts:WS2812B-4020 | LED1, LED10, LED10, LED11, LED12, LED12, LED13, LED13, LED14, LED14, LED15, LED15, LED16, LED16, LED17, LED17 +39 |
| 40 | 220Ω | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R1, R10, R10, R11, R11, R12, R12, R13, R13, R14, R14, R15, R15, R16, R16 +24 |
| 8 | ENCODER-RGB-SWITCH | Switches:ENCODER_LED_3 | S2, S2, S3, S3, S4, S4, S6, S6 |
| 8 | Q_NPN_BCE | Package_TO_SOT_SMD:SOT-23W | Q1, Q1, Q2, Q2, Q3, Q3, Q4, Q4 |
| 4 | MCP23018-E_SP | digikey-footprints:DIP-28_W7.62mm | IO1, IO1, IO2, IO2 |
| 4 | R_B2 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R22, R22, R24, R24 |
| 4 | Roller Encoder Switch | rollyboi9000000-main:RollerEncoder_Panasonic_EVQWGD001 | SW1, SW1, SW2, SW2 |
| 2 | I2C TRRS | Keebio-Parts:TRRS-PJ-320A | J1, J1 |
| 2 | I2C_OLED Display | Connectors:1X04 | J2, J2 |
| 2 | JOYSTICK_SLIDE | Switches:JOYSTICK-PSP1000 | S5, S5 |
| 2 | MOMENTARY-SWITCH-SPST-2-SMD-4.6X2.8MM | Switches:TACTILE_SWITCH_SMD_4.6X2.8MM | S1, S1 |
| 2 | R_A1 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R21, R21 |
| 2 | R_A2 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P7.62mm_Horizontal | R23, R23 |
| 2 | SPARKFUN_PRO_MICRO | Boards:SPARKFUN_PRO_MICRO | B1, B1 |
| 1 | >VALUE | Silicon-Custom:LCC-36 | >NAME |
More from Zoestra/Rotonometron
2- 4 layers173.6 × 185 mm
Rotonometron V2
Zoestra/Rotonometron
Split Keyboard PCB with all the bells and whistles
117 partsGPL-3.0
Similar boards
- 2 layers111 × 96.5 mm
- 4 layers117.7 × 100.9 mm
Shield
adamgreen/rugrover
A Work In Progress: My modern interpretation of the Rug Warrior Pro
46 parts1 - 4 layers225 × 111.5 mm
- 2 layers299.5 × 105.8 mm
- 2 layers299 × 82.5 mm
PixelWave
hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!
663 parts915 - 4 layers95 × 95 mm
Openmicro
conol-ai/openmicrokbd
Open-source recreation of OpenAI's Codex Micro macropad — PCB written in CoHDL, an AI-native hardware description language. Rust firmware (embassy) + companion app (makepad). MIT licensed. https://openmicrokbd.org
88 parts154MIT - 2 layers312.5 × 122.3 mm
- 2 layers140.1 × 121.8 mm
Questions
How big is the Rotonometron v1 PCB?
It measures 426.4 × 498.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Rotonometron v1 use?
294 parts, built around the SK6812 and MCP23018-E/SP. 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 Rotonometron v1 KiCad files?
From the Zoestra/Rotonometron repository on GitHub, at the commit this page was made from: the board is Kicad/Rotonometron v1/Rotonometron v1.kicad_pcb and its schematic Kicad/Rotomaxetron/Rotomaxetron.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Rotonometron v1 design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).