2 layers60 × 43 mm
Desktop
dyu134/ESP-HI-PLUS
The Robot sub-module is a high-performance actuator and sensing expansion board for the ESP-HI-PLUS, designed to transform the device into a mobile or interactive robotic platform.
62 parts
4 layers78 × 72.8 mm
Twin
Las-Vejas/Twin1A macropad for both your computer and Home Assistant.
- Size
- 78 × 72.8 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 101
- Nets
- 125
- Pads
- 446
- Tracks, vias
- 774, 122
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 28 Jan 2026
- Updated
- 7 Apr 2026
Overview
Twin is an open-source printed circuit board by Las-Vejas, from the Las-Vejas/Twin repository on GitHub. It is a 4-layer board of 78 × 72.8 mm with 101 parts on 125 nets, routed with 774 tracks and 122 vias.
It is built around the RP2040, W25Q16JVSSIQ and ESP32-C6-MINI-1, with the WS2812B-2020 among its other parts. Its parts include 37 diodes, 23 capacitors, 16 switches, 13 resistors and 4 ICs. It belongs with the keyboards and input and home automation and IoT boards and the ESP32, RP2040 and RISC-V boards of this library.
Main components
4
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
W25Q16JVSSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 10uA 133MHz 16Mbit 2.7V~3.6V 20 Years 3ms SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
ESP32-C6-MINI-1
SMD,13.2x16.6mmSMD,13.2x16.6mm New Arrivals ROHSEspressif SystemsUncategorised
WS2812B-2020
SMD,2.2x2mm0.6mA 0.84mm 120us 160mcd 200mcd 2kHz 2mm 2mm 300ns 470.4nm 515.6nm 520mcd 5V 622.5nm 800Kbit/s Built-in power-on reset circuit、Built-in power-on reset circuit、Integrated intelligent reverse connection protection function Top-mount SMD,2.2x2mm RGB LEDs(Built-in IC) ROHSWorldsemiRGB LEDs(Built-In IC)
README
README.mdTwin
A macropad for both your computer and Home Assistant. Controls PC as an HID device, controls Home Assistant via ESPHome.
I built this because I wanted a central place to control both my home/room, and my computer at the same time. This device switches between the Home Assistant mode and PC mode with a click of a button and you receive all the feedback through the 25 leds on board.
This macropad contains:
- 14 underglow leds
- 11 switches (with leds underneath)
- RP2040
- ESP32-C6
- 1 rotary encoder
Images
Schematic
PCB
BOM
Parts
101| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 100nf | Capacitor_SMD:C_0402_1005Metric | C2, C3, C5, C6, C7, C8, C9, C10, C11, C12, C17, C18, C19, C21, C22, C23 |
| 14 | WS2812B-2020 | LED_SMD:LED_WS2812B-2020_PLCC4_2.0x2.0mm | D1, D2, D3, D4, D5, D6, D7, D12, D13, D14, D15, D16, D17, D18 |
| 12 | D_Small | Diode_SMD:D_SOD-323_HandSoldering | D8, D9, D10, D11, D19, D20, D21, D22, D29, D30, D31, D32 |
| 11 | Choc | Choc:Choc_V1V2_1.00u | SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11, SW12, SW13, SW14 |
| 11 | LED_SK6812MINI | footprints:MX_SK6812MINI-E | D23, D24, D25, D26, D27, D28, D34, D35, D36, D37, D38 |
| 5 | 10k | Capacitor_SMD:C_0402_1005Metric | R1, R7, R9, R10, R13 |
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad | H1, H2, H3, H4 |
| 3 | 1uf | Capacitor_SMD:C_0402_1005Metric | C1, C4, C20 |
| 2 | 10uf | Capacitor_SMD:C_0402_1005Metric | C13, C14 |
| 2 | 1k | Capacitor_SMD:C_0402_1005Metric | R6, R8 |
| 2 | 27 | Capacitor_SMD:C_0402_1005Metric | R4, R5 |
| 2 | 33pf | Capacitor_SMD:C_0402_1005Metric | C15, C16 |
| 2 | 47 | Capacitor_SMD:C_0402_1005Metric | R11, R12 |
| 2 | 5.1k | Capacitor_SMD:C_0402_1005Metric | R2, R3 |
| 2 | BOOT | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW15, SW16 |
| 2 | SW_Push | Button_Switch_SMD:SW_Push_SPST_NO_Alps_SKRK | SW1, SW2 |
| 1 | 12MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | ESP FLASH | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | ESP32-C6-MINI-1 | RF_Module:ESP32-C6-MINI-1 | U2 |
| 1 | LOGO | LOGO | G*** |
| 1 | MCP1700x-330xxTT | Package_TO_SOT_SMD:SOT-23 | U1 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U3 |
| 1 | RotaryEncoder_Switch | Rotary_Encoder:RotaryEncoder_Alps_EC11E-Switch_Vertical_H20mm | SW3 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
| 1 | W25Q16JVSS | Package_SON:Winbond_USON-8-1EP_3x2mm_P0.5mm_EP0.2x1.6mm | U4 |
Questions
How big is the Twin PCB?
It measures 78 × 72.8 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Twin use?
101 parts, built around the RP2040, W25Q16JVSSIQ, ESP32-C6-MINI-1 and WS2812B-2020. 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 Twin KiCad files?
From the Las-Vejas/Twin repository on GitHub, at the commit this page was made from: the board is pcb/twin.kicad_pcb and its schematic pcb/twin.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Twin design in my own project?
Its repository states no licence, so its author keeps all rights: ask Las-Vejas before reusing the design.
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