Main

duckyb·urchin

Main PCB layout, top view — open source board by duckyb

About the Main PCB

Main is an open source PCB design by duckyb, published on GitHub under the MIT license. It is a 2-layer board measuring 221.6 × 89.6 mm, with 84 components from 8 distinct parts.

Other key parts include the nice_nano. By type, the board carries 34 switches, 34 diodes and 2 ICs.

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

From the project

34 key ZMK keyboard, nice!view, nice!nano & hotswap supported.

I created this design because I wanted to upgrade my Sweep with the fancy nice!view displays. I decided to use the edge design from the Swoop and to make it compatible with Kailh hotswap sockets. This is a strictly wireless-only design, and is only compatible with ZMK / nice!nano. Only Choc v1 switches + Hotswap are supported!

If you enjoy my work, please consider ⭐ starring and/or ❤ sponsoring it.

Main, from the project README
From the project README

Main components on the Main

Main bill of materials (BOM)

84 components, 8 distinct parts.

QtyPartRefs
2
nice_nano
U1, U2
4
MountingHole_Pad
Bat+0, Bat+1, BatGND0, BatGND1
2
nice!view
Display1, Display2
4
M2 Hole
H1, H2, H3, H4
2
SW_Push
RSW0, RSW1
34
Kailh-Choc
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +26
2
SW_SPDT
SW_POWER0, SW_POWER1
34
diode
D1, D2, D3, D4, D5, D6, D7, D8 +26

Main design files

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

Main: common questions

How big is the Main PCB?

The Main measures 221.6 × 89.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Main?

84 components, from 8 distinct parts. The full bill of materials is listed on this page.

Where can I download the Main design files?

From the duckyb/urchin 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 duckyb chose for the repository.

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