4 layers122 × 66 mm
Kleinvoet
CMGeldenhuys/kleinvoet
Spatially-Distributed Temporally-Synchronised Infrasonic Recorder
189 parts3CERN-OHL-S-2.0
2 layers44.1 × 25.2 mm
GPS PND
FTHGL/GPS-PNDGPS Personal Navigation Device, STM32F301K6Ux, MS38SN3 gnss module, AZ1117-3.3
- Size
- 44.1 × 25.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 35
- Pads
- 111
- Tracks, vias
- 108, 92
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 26 Oct 2024
- Updated
- 18 Jan 2026
Overview
GPS PND is an open-source printed circuit board by FTHGL, from the FTHGL/GPS-PND repository on GitHub, published under the MIT licence. It is a 2-layer board of 44.1 × 25.2 mm with 28 parts on 35 nets, routed with 108 tracks and 92 vias.
It is built around the BLM15HD102SN1 and ED555/2DS. Its parts include 12 capacitors, 3 ICs, 2 resistors, 2 connectors and 2 switches. It belongs with the radio and wireless boards and the STM32 boards of this library.
Main components
2README
README.mdGPS PND Project
This repository contains the KiCad design files and documentation for the GPS PND (Portable Navigation Device) project. The design includes a power supply circuit, STM32F301K6 microcontroller, and the MS38SN4 GNSS module, aimed at providing GPS functionality for various IoT and navigation applications.
Features
Power Supply: AZ1117-3.3
- Stable 3.3V output for powering the MCU and GNSS module.
- Low dropout regulator with thermal shutdown and overcurrent protection.
- More Information - AZ1117-3.3
Microcontroller: STM32F301K6
- ARM Cortex-M4 operating at 72 MHz with FPU for enhanced processing.
- 32 KB Flash memory and 16 KB SRAM.
- Connected to various peripherals such as USART, which is used both for communication and boot processes, and GPIO, which is used for control and to handle the PPS interrupt signal from the GNSS module.
- More Information - STM32F301K6
GNSS Module: MS38SN4
- Multi-constellation GNSS receiver: GPS, Beidou, Glonass, Galileo.
- Ultra-low power consumption for battery-operated devices.
- Integrated PPS (Pulse Per Second) output for precise synchronization.
- More Information - MS38SN4
Requirements
Hardware:
-
AZ1117-3.3V Low Dropout Regulator
-
STM32F301K6U6 ARM Cortex-M4 Microcontroller
-
MS38SN4 GNSS Module
Software:
- KiCad for PCB design
- STM32CubeIDE or Keil for programming the microcontroller
- GNSS data parsing libraries (optional, depending on application) More Information - MS38SN4
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100 nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C1, C2, C3, C4 |
| 2 | 25 pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C9, C10 |
| 2 | 4.7k | Resistor_SMD:R_0402_1005Metric_Pad0.72x0.64mm_HandSolder | R1, R2 |
| 2 | BLM15HD102SN1 | Inductor_SMD:L_0201_0603Metric_Pad0.64x0.40mm_HandSolder | FB1, FB2 |
| 2 | ~ | Button_Switch_SMD:SW_SPST_B3U-1000P-B | SW1, SW2 |
| 1 | 1 uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C6 |
| 1 | 10 nF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C7 |
| 1 | 10 uF | Capacitor_Tantalum_SMD:CP_EIA-3216-12_Kemet-S_Pad1.58x1.35mm_HandSolder | C11 |
| 1 | 22 uF | Capacitor_Tantalum_SMD:CP_EIA-3216-12_Kemet-S_Pad1.58x1.35mm_HandSolder | C12 |
| 1 | 27 nH | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L1 |
| 1 | 4.7 uF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C5 |
| 1 | 5 pF | Capacitor_SMD:C_0402_1005Metric_Pad0.74x0.62mm_HandSolder | C8 |
| 1 | 8Mhz | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | AZ1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | Conn_01x02 | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J2 |
| 1 | ED555/2DS | GPS-PND:ED555_2DS | J1 |
| 1 | STM32F301K6Ux | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U1 |
| 1 | ~ | LED_SMD:LED_0402_1005Metric_Pad0.77x0.64mm_HandSolder | D1 |
| 1 | ~ | Library:MS38SN4 | U3 |
The 26 most common of 28 parts.
Questions
How big is the GPS PND PCB?
It measures 44.1 × 25.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the GPS PND use?
28 parts, built around the BLM15HD102SN1 and ED555/2DS. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the GPS PND KiCad files?
From the FTHGL/GPS-PND repository on GitHub, at the commit this page was made from: the board is GPS_PND/GPS-PND/GPS-PND.kicad_pcb and its schematic GPS_PND/GPS-PND/GPS-PND.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the GPS PND design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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