HardLabs

GPS

fluffy·blinky·hardware/gps_A/gps_A.kicad_pcb

GPS PCB layout, top view — open source STM32 board by fluffy

About the GPS PCB

GPS is an open source STM32 PCB design by fluffy, published on GitHub under the BSD-3-Clause license. It is a 2-layer board measuring 119 × 92 mm, with 80 components from 34 distinct parts.

Its main chip is the STM32F405RGTX, from the STM32 family. Other key parts include the SN74LVC1G14DBV, TLV3603DCKR, AMS1117-3.3, M24C02-RMN and CH340C. By type, the board carries 38 resistors, 23 capacitors, 10 ICs, 3 transistors, 3 connectors and 2 diodes.

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

From the project

Blinking lights to tell time

If the schematic or boards in changed such that the software can tell the difference, the rev need to go up a letter. Other changes can get a sub number on the rev letter.

Don't update sybols / footprint from libraries. It over writes stuff.

When done, do a plot to generate schematic in production subdir.

When done, do an export of step to generate a model in production subdir.

Main components on the GPS

SN74LVC1G14DBVTLV3603DCKRSTM32F405RGTXAMS1117-3.3M24C02-RMNCH340CUSBLC6-2P6

GPS bill of materials (BOM)

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

QtyPartRefs
4
SN74LVC1G14DBV
U2, U19, U20, U21
1
TLV3603DCKR
U8
1
STM32F405RGTX
STM32F405RGTx
U10
1
AMS1117-3.3
U11
1
M24C02-RMN
U13
1
CH340C
U14
1
USBLC6-2P6
U15
3
2N7002
Q1, Q9, Q10
1
16MHZ
16MHz
Y2
1
RJ45
J1
1
C165948
USB_C_Receptacle
J4
1
KH-BNC50-3511
J10
1
C8598
B5819W SL
D4
1
MHS110FRGBCT
LED_ABGR
D5
15
100N
100n
C1, C11, C30, C31, C32, C36, C38, C39 +7
2
10U
10u
C2, C42
1
47P
47p
C4
1
100N
100n
C27
2
33P
33p
C28, C29
2
2U2
2u2
C35, C40
Show 14 more
QtyPartRefs
1
100R
R1
14
1K0
R2, R3, R5, R6, R22, R41, R51, R52 +6
1
200R
R4
1
130K
R21
2
270R
R25, R48
1
22R0
R26
5
47K
R27, R28, R76, R77, R78
4
4K7
R32, R33, R34, R36
1
3K3
R35
2
5K1
R37, R38
1
10K
R50
2
1K5
R58, R59
1
150R
R70
2
47R
R73, R74

GPS design files

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

GPS: common questions

What microcontroller does the GPS use?

The GPS is built around the STM32F405RGTX, from the STM32 family.

How big is the GPS PCB?

The GPS measures 119 × 92 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the GPS?

80 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 GPS design files?

From the fluffy/blinky 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 GPS design in my own project?

Yes, under the terms of its BSD-3-Clause license, which fluffy chose for the repository.

Can I test firmware for the GPS 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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