HardLabs

Qalble

somepin·qalble·pcb/QALBLE.kicad_pcb

Qalble PCB layout, top view — open source Nordic nRF board by somepin
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About the Qalble PCB

Qalble is an open source Nordic nRF PCB design by somepin, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 224.8 × 89.9 mm, with 79 components from 13 distinct parts.

Its main chip is the Adafruit_ItsyBitsy_nRF52840, from the Nordic nRF family. Other key parts include the Adafruit_Lipo_Backpack. By type, the board carries 36 LEDs, 36 diodes, 2 ICs, 2 connectors and 1 switch.

It belongs with the keyboards and dev boards & breakouts designs in this gallery.

From the project

An Alice-like 35% 3d printed mechanical keyboard using ItsyBitsy dev boards

Qalble, from the project README
From the project README

Main components on the Qalble

Adafruit_ItsyBitsy_nRF52840Adafruit_Lipo_Backpack

Qalble bill of materials (BOM)

79 components, 13 distinct parts.

QtyPartRefs
1
Adafruit_ItsyBitsy_nRF52840
U1
1
Adafruit_Lipo_Backpack
U2
1
Conn_01x02_Female
J1
1
Conn_01x02
J2
2
RotaryEncoder_Switch
EN1, EN2
1
SW_SPDT
SW1
30
MX-NoLED
MX1, MX2, MX3, MX4, MX5, MX6, MX7, MX8 +22
2
MX-NoLED
MX10, MX11
1
MX-NoLED
MX21
1
MX-NoLED
MX30
1
MX-NoLED
MX33
1
MX-NoLED
MX34
36
D_Small
D1, D2, D3, D4, D5, D6, D7, D8 +28

Qalble design files

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

Qalble: common questions

What microcontroller does the Qalble use?

The Qalble is built around the Adafruit_ItsyBitsy_nRF52840, from the Nordic nRF family.

How big is the Qalble PCB?

The Qalble measures 224.8 × 89.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Qalble?

79 components, from 13 distinct parts. The full bill of materials is listed on this page.

Where can I download the Qalble design files?

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

Can I use the Qalble design in my own project?

Yes, under the terms of its GPL-3.0 license, which somepin chose for the repository.

Can I test firmware for the Qalble 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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