HardLabs

BluBoard

cubit010·BluBoard·PCB/NRFboard.kicad_pcb

BluBoard PCB layout, top view — open source Nordic nRF board by cubit010

About the BluBoard PCB

BluBoard is an open source Nordic nRF PCB design by cubit010, published on GitHub. It is a 6-layer board measuring 25.8 × 51.2 mm, with 51 components from 34 distinct parts.

Its main chip is the C190794, from the Nordic nRF family. Other key parts include the C39051 and C2865459. By type, the board carries 25 capacitors, 8 resistors, 5 connectors, 3 ICs, 3 diodes and 2 crystals.

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

From the project

a bluetooth enabled devboard using the nrf52840 chip

An nRF52840 dev board made to be embedded in a custom mechanical keyboard, with as many pins broken out as possible within JLCPCB's 6-layer specs.

BluBoard is a custom nRF52840 development board built for use inside a mechanical keyboard. The main goal was to break out as many GPIO pins as possible and also having proper RF capabilities most off-the-shelf options such as the nice nano is powerful, but comes at high cost while having low gpio count, this board tries to fix that.

BluBoard, from the project README
From the project README

Main components on the BluBoard

C39051C190794C2865459

BluBoard bill of materials (BOM)

51 components, 34 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
C39051
MCP1700x-300xxTT
U2
1
C190794
nRF52840
U4
1
C2865459
BQ24075RGT
U7
1
C9009
32Mhz
Y1
1
C97606
32.768kHz
Y2
2
Conn_01x20
J2, J3
2
Conn_01x03
J4, J5
1
Conn_01x02
J6
1
Antenna_Shield
BLE1
1
C720477
SW_Push
SW1
1
USB_C_Receptacle_USB2.0_14P
USB1
1
cubit010large
cubit010lg
1
green
D1
1
orange
D2
1
C2827688
PRTR5V0U2X
D87
1
C86065
4.7nH
L1
5
C1525
100nF
C1, C2, C3, C7, C23
2
0.1uF
C4, C8
2
1uF
C5, C11
1
22uF
C6
Show 14 more
QtyPartRefs
2
10uF
C9, C10
2
C1554
20pF
C18, C19
3
C52923
1uF
C21, C26, C30
3
C19666
4.7uF
C22, C25, C29
1
C1546
100pF
C24
2
C1548
22pF
C31, C32
1
C285068
0.8pF
C33
1
C1544
0.5pF
C34
2
C25905
5.1K
R1, R2
2
C25744
10k
R3, R12
1
1.5k
R4
1
1.2k
R5
1
C4109
1.1k
R10
1
C25744
1.5k
R11

BluBoard design files

The KiCad project lives in the cubit010/BluBoard repository on GitHub; these links point at the commit this page was built from.

BluBoard: common questions

What microcontroller does the BluBoard use?

The BluBoard is built around the C190794, from the Nordic nRF family.

How big is the BluBoard PCB?

The BluBoard measures 25.8 × 51.2 mm, has 6 copper layers and is 1.6376 mm thick.

How many components are on the BluBoard?

51 components, from 34 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 BluBoard design files?

From the cubit010/BluBoard 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 BluBoard design in my own project?

The repository has no license, so all rights stay with cubit010. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the BluBoard 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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