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Wtrack

supisbe12·Wtrack

Wtrack PCB layout, top view — open source Nordic nRF board by supisbe12

About the Wtrack PCB

Wtrack is an open source Nordic nRF PCB design by supisbe12, published on GitHub. It is a 2-layer board measuring 85.8 × 53.4 mm, with 34 components from 29 distinct parts.

Its main chip is the NRF52840-QIAA-R, from the Nordic nRF family. Other key parts include the RFX2401C, GPS1003 and ATGM336H-5N31. By type, the board carries 20 capacitors, 6 inductors, 4 ICs, 1 crystal and 1 resistor.

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

From the project

A PCB that tracks it's location using both bluetooth and gps system

Wtrack is a tracker with a combination of Apple Find My, Hubble (terrestrial + satellite), GPS, and BLE proximity detection on one barebones PCB (no enclosure) which goes inside your wallet. I want it to be barebone because I wanted to be able to see the actual PCB because it looks cool ,But I am planning to add a layer acrylic spray that I already have available to prevent water from affecting the board.

Wtrack, from the project README
From the project README

Main components on the Wtrack

RFX2401CGPS1003ATGM336H-5N31NRF52840-QIAA-R

Wtrack bill of materials (BOM)

34 components, 29 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RFX2401C
IC1
1
GPS1003
GPS
Rainsun(霖昱微)
U1
1
ATGM336H-5N31
杭州中科微
U2
1
NRF52840-QIAA-R
NORDIC
U4
1
NX2016SA-32MHZ-STD-CZS-5
NDK
X1
1
CR2032-BS-6-1
QIJEY
B1
1
2450LP14A100T
JOHANSON(约翰逊)
FL1
1
LQP15MN4N7B02D
4.7nH ±5%
muRata(村田)
L1_A1
1
SDFL1608S100KTF
10µH, IDC≥50mA, 0603
Sunlord(顺络)
L2
1
LQW15AN47NG00D
15nH
muRata(村田)
L3
1
SDFL1608S100KTF
10µH, IDC≥80mA, 0603
Sunlord(顺络)
L4
1
LQP15MN4N7B02D
2.2nH ±5%, 0402
muRata(村田)
L5
1
ANT3216A063R2400A
Bluetooth Antenna
YAGEO(国巨)
L7
2
0402CG120J500NT
12pF NP0 ±2%, 0402
FH(风华)
C1, C2
1
GRM0335C1ER30BA01D
0.3pF
muRata(村田)
C3
1
1.0pF NP0, ±5%
C3_A1
1
1.2P pF NP0, ±5%
C4
1
CL05B104KO5NNNC
100nF X7R ±10%, 0402
SAMSUNG(三星)
C5
2
GRM188Z71A475KE15D
4.7uF X7R ±10%, 0603
C6, C19
3
0402CG101J500NT
100nF X7R, ±10%
FH(风华)
C7, C8, C12
Show 9 more
QtyPartRefs
1
CL05B104KO5NNNC
820pF NP0 ±5%, 0402
SAMSUNG(三星)
C9
1
KR-5R5C155-R
C10
1
CC0402FRNPO9BN221
220pF +1%
YAGEO(国巨)
C11
1
100 pF NP0, ±5%
C11_NRF1
1
1uF
C13
2
GRM188Z71A475KE15D
1.0µF X7R ±10%, 0603
C14, C15
1
CL05B104KO5NNNC
4.7nF X7R ±10%
SAMSUNG(三星)
C16
1
CL10A106KP8NNNC
10uF
SAMSUNG(三星)
C19_B1
1
100Ω
R1

Wtrack design files

The KiCad project lives in the supisbe12/Wtrack repository on GitHub; these links point at the commit this page was built from.

Wtrack: common questions

What microcontroller does the Wtrack use?

The Wtrack is built around the NRF52840-QIAA-R, from the Nordic nRF family.

How big is the Wtrack PCB?

The Wtrack measures 85.8 × 53.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Wtrack?

34 components, from 29 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 Wtrack design files?

From the supisbe12/Wtrack 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 Wtrack design in my own project?

The repository has no license, so all rights stay with supisbe12. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Wtrack 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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