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Dya left

cormoran·dya-dash-keyboard·hardware/dya-dash/left/dya-left.kicad_pcb

Dya left PCB layout, top view — open source Nordic nRF board by cormoran
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About the Dya left PCB

Dya left is an open source Nordic nRF PCB design by cormoran, published on GitHub under the CC-BY-4.0 license. It is a 2-layer board measuring 127.2 × 92.9 mm, with 113 components from 25 distinct parts.

Its main chip is the XIAO-nRF52840-SMD, from the Nordic nRF family.

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

From the project

DYA Dash portable wireless split keyboard with 25mm trackball

- Controller: XIAO NRF52840 - Firmware: ZMK - Switch: Kailh Choc v2, hotswappable (2pin) - AAA battery (1.2V NiMH or 1.5V) - Touch sensor buttons (See movie how it works) - PMW3610 low power trackball sensor - LED x 4 x 2 for BLE profile, battery level indication (See movie how it works) - Hardware capability for below features (Not tested yet) - Dual trackball support - Wired connection

Dya left, from the project README
From the project README

Dya left bill of materials (BOM)

113 components, 25 distinct parts.

QtyPartRefs
4
~
CL1, CL2, CL3, CL4
3
10uF
CL5, CL7, CL8
1
20pF
CL6
41
D
DL1, DL2, DL3, DL4, DL5, DL6, DL7, DL8 +33
1
USB_C_Receptacle_USB2.0_14P
JL1
1
Conn_01x04
JL3
1
Conn_01x02_Pin
JL4
1
Jumper_2_Open
JPL1
1
0.47uH
LL1
8
Q_PMOS_GSD
QL1, QL2, QL3, QL4, QL5, QL6, QL7, QL8
4
100kΩ
RL1, RL4, RL12, RL13
1
1MΩ
RL2
2
470kΩ
RL3, RL6
6
100Ω
RL5, RL8, RL9, RL10, RL11, RL15
1
150kΩ
RL7
1
1kΩ
RL14
23
SW_Push_45deg
SWL1, SWL2, SWL3, SWL4, SWL5, SWL6, SWL7, SWL8 +15
2
SW_Push_45deg
SWL24, SWL25
1
SW_SPDT
SW_BATL1
2
Conn_01x01_Pin
TL3, TL4
Show 5 more
QtyPartRefs
1
XIAO-nRF52840-SMD
UL1
1
TPS61021A
UL2
1
BU42
UL3
1
TTP224
UL4
4
SK6812
LED_L1, LED_L2, LED_L3, LED_L4

Dya left design files

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

Dya left: common questions

What microcontroller does the Dya left use?

The Dya left is built around the XIAO-nRF52840-SMD, from the Nordic nRF family.

How big is the Dya left PCB?

The Dya left measures 127.2 × 92.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Dya left?

113 components, from 25 distinct parts. The full bill of materials is listed on this page.

Where can I download the Dya left design files?

From the cormoran/dya-dash-keyboard repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Dya left design in my own project?

Yes, under the terms of its CC-BY-4.0 license, which cormoran chose for the repository.

Can I test firmware for the Dya 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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