HardLabs

Twin

Las-Vejas·Twin·pcb/twin.kicad_pcb

Twin PCB layout, top view — open source RP2040/RP2350 board by Las-Vejas

About the Twin PCB

Twin is an open source RP2040/RP2350 PCB design by Las-Vejas, published on GitHub. It is a 4-layer board measuring 78 × 72.8 mm, with 96 components from 23 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the MCP1700x-330xxTT, ESP32-C6-MINI-1 and W25Q16JVSS. By type, the board carries 37 diodes, 23 capacitors, 16 switches, 13 resistors, 4 ICs and 2 connectors.

It belongs with the iot & wireless and keyboards designs in this gallery.

From the project

A macropad for both your computer and Home Assistant.

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

Twin, from the project README
From the project README

Main components on the Twin

MCP1700x-330xxTTESP32-C6-MINI-1RP2040W25Q16JVSS

Twin bill of materials (BOM)

96 components, 23 distinct parts.

QtyPartRefs
1
MCP1700x-330xxTT
U1
1
ESP32-C6-MINI-1
U2
1
RP2040
U3
1
W25Q16JVSS
U4
1
12MHz
Y1
1
USB_C_Receptacle_USB2.0_16P
J1
1
ESP FLASH
J2
2
SW_Push
SW1, SW2
1
RotaryEncoder_Switch
SW3
11
Choc
SW4, SW5, SW6, SW7, SW8, SW9, SW10, SW11 +3
2
BOOT
SW15, SW16
14
WS2812B-2020
D1, D2, D3, D4, D5, D6, D7, D12 +6
12
D_Small
D8, D9, D10, D11, D19, D20, D21, D22 +4
11
LED_SK6812MINI
D23, D24, D25, D26, D27, D28, D34, D35 +3
3
1uf
C1, C4, C20
16
100nf
C2, C3, C5, C6, C7, C8, C9, C10 +8
2
10uf
C13, C14
2
33pf
C15, C16
5
10k
R1, R7, R9, R10, R13
2
5.1k
R2, R3
Show 3 more
QtyPartRefs
2
27
R4, R5
2
1k
R6, R8
2
47
R11, R12

Twin design files

The KiCad project lives in the Las-Vejas/Twin repository on GitHub; these links point at the commit this page was built from.

Twin: common questions

What microcontroller does the Twin use?

The Twin is built around the RP2040, from the RP2040/RP2350 family.

How big is the Twin PCB?

The Twin measures 78 × 72.8 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Twin?

96 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the Twin design files?

From the Las-Vejas/Twin repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Twin design in my own project?

The repository has no license, so all rights stay with Las-Vejas. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Twin without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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