HardLabs

Main

zzeneg·trio·pcb/main.kicad_pcb

Main PCB layout, top view — open source RP2040/RP2350 board by zzeneg

About the Main PCB

Main is an open source RP2040/RP2350 PCB design by zzeneg, published on GitHub under the MIT license. It is a 2-layer board measuring 74 × 42 mm, with 26 components from 15 distinct parts.

Its main chip is the RP2040, from the RP2040/RP2350 family. Other key parts include the DRV2605LDGS. By type, the board carries 9 connectors, 5 jumpers, 2 capacitors, 2 resistors, 1 IC and 1 switch.

It belongs with the keyboards and displays & leds designs in this gallery.

From the project

Modular ergonomic keyboard with touchpad and display

Modular unibody keyboard with two VIK modules.

- MinY (19x16mm) spacing - 36 KS-33 (Gateron Low Profile) keys with hotswap - central PCB with two independent VIKs, DRV2605L haptic feedback and rotary encoder - periferal PCBs for keys - 3D printed case with 1.28" display, Azoteq TPS65 touchpad and 33mm encoder

- Main PCB - Side PCB - Azoteq VIK adapter - Display VIK adapter - 1.28" round version

Main, from the project README
From the project README

Main components on the Main

DRV2605LDGS

Main bill of materials (BOM)

26 components, 15 distinct parts.

QtyPartRefs
1
DRV2605LDGS
U1
1
out+
J1
1
out-
J2
1
RP2040
J3
2
Conn_01x12_Socket
J4, J5
2
Connector_VIK-keyboard
VIK_K1, VIK_K2
2
Connector_VIK-keyboard
VIK_K3, VIK_K4
4
MountingHole
H1, H2, H3, H4
4
5V
JP1, JP2, JP4, JP5
1
VCC
JP3
1
RotaryEncoder_Switch
RE1
1
SW_Push
RST1
1
D
D1
2
1u
C2, C3
2
4.7k
R1, R2

Main design files

The KiCad project lives in the zzeneg/trio repository on GitHub; these links point at the commit this page was built from.

Main: common questions

What microcontroller does the Main use?

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

How big is the Main PCB?

The Main measures 74 × 42 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Main?

26 components, from 15 distinct parts. The full bill of materials is listed on this page.

Where can I download the Main design files?

From the zzeneg/trio repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Main design in my own project?

Yes, under the terms of its MIT license, which zzeneg chose for the repository.

Can I test firmware for the Main 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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