HardLabs

Bletest-2

tangybbq·keyboard·bletest-2/bletest-2.kicad_pcb

Bletest-2 PCB layout, top view — open source Nordic nRF board by tangybbq
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About the Bletest-2 PCB

Bletest-2 is an open source Nordic nRF PCB design by tangybbq, published on GitHub. It is a 2-layer board measuring 78.5 × 52 mm, with 45 components from 22 distinct parts.

Its main chip is the MDBT53_1M, from the Nordic nRF family. Other key parts include the MAX40200AUK and W25Q128JVP. By type, the board carries 10 connectors, 8 resistors, 7 diodes, 7 capacitors, 4 ICs and 4 switches.

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

From the project

Design files for my keyboards

This repo captures the design files associated with my custom keyboards.

These keyboards are primarily focused on Steno input, mainly using Plover. In the spirit of open steno, I have made these designs open. Anyone is free to make designs based on these keyboards, for non-commercial purposes. I am releasing the designs under the CC BY-NC 3.0 license. Specifically, this means if you wish to sell a product based on the design, you should talk to me.

Bletest-2, from the project README
From the project README

Main components on the Bletest-2

MAX40200AUKW25Q128JVP

Bletest-2 bill of materials (BOM)

45 components, 22 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MAX40200AUK
U1
1
~
U2
1
~
U3
1
W25Q128JVP
U4
1
Crystal
Y1
6
CONN_01X02
Conn_01x02
J1, J2, J4, J5, J6, J8
1
CONN_ARM_JTAG_SWD_10
Conn_ARM_JTAG_SWD_10
J3
1
USB_C_RECEPTACLE_USB2.0_16P
USB_C_Receptacle_USB2.0_16P
J7
2
RJ45
J-LEFT1, J-RIGHT1
1
Battery
BT1
4
SW_Push
SW1, SW2, SW3, SW4
5
BAV19W
D1, D2, D3, D4, D5
2
SK6812MINI
D6, D7
1
4.7UH
4.7uH
L1
2
10UH
10uH
L2, L3
4
4.7UF
4.7uF
C1, C2, C3, C6
2
1UF
1uF
C4, C5
1
100NF
100nF
C7
1
1M
R1
2
180K
R2, R8
Show 2 more
QtyPartRefs
3
5.1K
R3, R4, R5
2
2.2
R6, R7

Bletest-2 design files

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

Bletest-2: common questions

What microcontroller does the Bletest-2 use?

The Bletest-2 is built around the MDBT53_1M, from the Nordic nRF family.

How big is the Bletest-2 PCB?

The Bletest-2 measures 78.5 × 52 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Bletest-2?

45 components, from 22 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 Bletest-2 design files?

From the tangybbq/keyboard 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 Bletest-2 design in my own project?

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

Can I test firmware for the Bletest-2 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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