HardLabs

LocalTrack

krakrukra·LocalTrack·hardware/LocalTrack.kicad_pcb

LocalTrack PCB layout, top view — open source STM32 board by krakrukra
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About the LocalTrack PCB

LocalTrack is an open source STM32 PCB design by krakrukra, published on GitHub under the MIT license. It is a 2-layer board measuring 50 × 75 mm, with 59 components from 26 distinct parts.

Its main chip is the STM32F072C8T6, from the STM32 family. Other key parts include the ADXL345BCCZ, IP4220CZ6, MCP73831T-2DCI, W25N01GVZEIG and MCP1700-3302E/TT. By type, the board carries 20 resistors, 15 capacitors, 8 ICs, 6 transistors, 3 diodes and 2 connectors.

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

From the project

OSHW GPS Tracker (Logger)

This device is an open source (both firmware and board level design) GPS data logger. You mount it with built-in magnets on some vehicle, flip the power switch and the location data is saved into internal flash storage. After some tracks were recorded, you can retrieve the device again and extract GPX track files via USB. You can then pass these files into mapping/analysis software of your choice, for example viking, to get an easy to work with representation of recorded location data.

LocalTrack, from the project README
From the project README

Main components on the LocalTrack

ADXL345BCCZIP4220CZ6STM32F072C8T6MCP73831T-2DCIW25N01GVZEIGMCP1700-3302E/TTSIM28

LocalTrack bill of materials (BOM)

59 components, 26 distinct parts.

QtyPartRefs
1
ADXL345BCCZ
Analog Devices
U1
1
IP4220CZ6
Nexperia
U2
1
STM32F072C8T6
STMicroelectronics
U3
2
MCP73831T-2DCI
Microchip Technology
U4, U5
1
W25N01GVZEIG
Winbond Electronics
U6
1
MCP1700-3302E/TT
Microchip Technology
U7
1
SIM28
SIMCom Wireless Solutions
U9
4
SI2302
Guangdong Hottech
Q1, Q2, Q3, Q5
2
SI2301
Guangdong Hottech
Q4, Q6
1
8MHz
Nihon Dempa Kogyo
Y1
1
ST-LINK_V2
~
CON1
1
USB_B_Micro
~
J1
1
1575R-A
~
AE2
1
3000mAh
EHAO Technology Co Ltd
BT1
1
KCD11-2P
~
SW1
1
test pins
~
TP1
1
GREEN
Foshan NationStar
D1
1
RED
Foshan NationStar
D2
1
BLUE
Foshan NationStar
D3
4
10uF
TDK
C1, C7, C10, C11
Show 6 more
QtyPartRefs
9
100nF
TDK
C2, C5, C6, C8, C9, C12, C14, C16 +1
2
18pF
TDK
C3, C4
6
1k
LIZ Electronics
R1, R3, R6, R10, R11, R13
5
10k
LIZ Electronics
R2, R4, R5, R12, R14
3
33
LIZ Electronics
R7, R8, R9
6
100k
LIZ Electronics
R15, R16, R17, R18, R19, R20

LocalTrack design files

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

LocalTrack: common questions

What microcontroller does the LocalTrack use?

The LocalTrack is built around the STM32F072C8T6, from the STM32 family.

How big is the LocalTrack PCB?

The LocalTrack measures 50 × 75 mm, has 2 copper layers and is 0.89 mm thick.

How many components are on the LocalTrack?

59 components, from 26 distinct parts. The full bill of materials is listed on this page.

Where can I download the LocalTrack design files?

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

Can I use the LocalTrack design in my own project?

Yes, under the terms of its MIT license, which krakrukra chose for the repository.

Can I test firmware for the LocalTrack without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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