HardLabs

Splitly

mannireis·splitly·PCB/splitly.kicad_pcb

Splitly PCB layout, top view — open source Nordic nRF board by mannireis

About the Splitly PCB

Splitly is an open source Nordic nRF PCB design by mannireis, published on GitHub. It is a 2-layer board measuring 271.5 × 85.6 mm, with 122 components from 3 distinct parts.

Its main chip is the XIAO-NRF52840-DIP, from the Nordic nRF family. By type, the board carries 60 switches, 60 diodes and 2 ICs.

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

From the project

A wip clean split kb

Splitly is a 60key wireless split keyboard that was made with support of https://hackclub.com/!

The hardest part about this was making the case and reasearh of all the parts.

My inspiration was mostly the bayleaf keyboard:

https://www.graz.io/articles/bayleaf-wireless-keyboard

Splitly, from the project README
From the project README

Main components on the Splitly

XIAO-NRF52840-DIP

Splitly bill of materials (BOM)

122 components, 3 distinct parts — part numbers from the project's BOM.

QtyPartRefs
2
XIAO-NRF52840-DIP
XIAO-nRF52840-DIP
U1, U2
60
SW_PUSH_45DEG
SW_Push_45deg
SW1, SW2, SW3, SW4, SW5, SW6, SW7, SW8 +52
60
D
D1, D2, D3, D4, D5, D6, D7, D8 +52

Splitly design files

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

Splitly: common questions

What microcontroller does the Splitly use?

The Splitly is built around the XIAO-NRF52840-DIP, from the Nordic nRF family.

How big is the Splitly PCB?

The Splitly measures 271.5 × 85.6 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Splitly?

122 components, from 3 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Splitly design files?

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

Can I use the Splitly design in my own project?

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

Can I test firmware for the Splitly without the hardware?

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

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