HardLabs

Left

coderPaddyS·keyboard·ergogen/output/pcbs/left.kicad_pcb

Left PCB layout, top view — open source Nordic nRF board by coderPaddyS

About the Left PCB

Left is an open source Nordic nRF PCB design by coderPaddyS, published on GitHub under the MIT license. It is a 2-layer board measuring 135.7 × 104 mm, with 95 components from 8 distinct parts.

Its main chip is the xiao-ble, from the Nordic nRF family. By type, the board carries 30 switches, 30 LEDs, 30 diodes, 2 connectors, 1 IC and 1 transformer.

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

From the project

- The Ergogen v4 config.yaml file - The outputted PCB files for use in KiCad (both the wired and uncompleted versions) available in the ergogen directory - The left key plate JSCAD file generated by Ergogen (as well as the converted STL version). Note that no right side is includ

- The Ergogen v4 config.yaml file - The outputted PCB files for use in KiCad (both the wired and uncompleted versions) available in the ergogen directory - The left key plate JSCAD file generated by Ergogen (as well as the converted STL version). Note that no right side is included as in Fusion 360 I simply build out the case using the left side and then mirror the case with some modifications - The ZMK firmware files for Caldera - The completed case files for 3D printing can be found here: https://makerworld.com/en/models/545431

Left, from the project README
From the project README

Main components on the Left

xiao-ble

Left bill of materials (BOM)

95 components, 8 distinct parts.

QtyPartRefs
1
xiao-ble
MCU1
1
—
J1
1
Display
J2
1
Panasonic_EVQPUL_EVQPUC
B1
30
—
S1, S2, S3, S4, S5, S6, S7, S8 +22
1
—
T1
30
—
LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +22
30
—
D1, D2, D3, D4, D5, D6, D7, D8 +22

Left design files

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

Left: common questions

What microcontroller does the Left use?

The Left is built around the xiao-ble, from the Nordic nRF family.

How big is the Left PCB?

The Left measures 135.7 × 104 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Left?

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

Where can I download the Left design files?

From the coderPaddyS/keyboard repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the Left design in my own project?

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

Can I test firmware for the Left 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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