richteel/gps_tracker

GPS Tracker and data logger

gps_tracker

GPS Tracker and data logger

The files here include hardware, case, PCB, Python and C++ code, documentation, and reference files.

Bill of Materials (BOM)

• Adafruit Feather RP2040
  • Qty: 1
  • Source: Adafruit https://www.adafruit.com/product/4884
• Adafruit Micro SD Breakout
  • Qty: 1
  • Source: Adafruit https://www.adafruit.com/product/4682
• SPDT Slide Switch
  • Qty: 2
  • Source: Adafruit https://www.adafruit.com/product/805
• Tactile Switch Push Button (6mm slim)
  • Qty: 4
  • Source: Adafruit https://www.adafruit.com/product/1489
• ST-PH 2-Pin SMT Right Angle Connector
  • Qty: 1
  • Source: Adafruit https://www.adafruit.com/product/1769
• GPS Receiver - GP-635T (50 Channel)
  • Qty: 1
  • Source: Sparkfun https://www.sparkfun.com/products/retired/11571
• JST SH Jumper 6 Wire Assembly - 8"
  • Qty: 1
  • Source: Sparkfun https://www.sparkfun.com/products/10361
• I2C 128x64 OLED Display
  • Qty: 1
  • Source: Amazon https://www.amazon.com/gp/product/B08VNRH5HR/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
• 3.7V 680mAh 102530 Lipo Battery Rechargeable Lithium Polymer ion Battery Pack with JST Connector
  • Qty: 1
  • Source: Amazon https://www.amazon.com/gp/product/B07BTPNS2B/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
  • WARNING: The battery from this source has reversed polarity. Change the pins to match correct orientation!
• CR2032 Coin Button Cell Battery Holder Case
  • Qty: 1
  • Source: Amazon https://www.amazon.com/gp/product/B06XF3K4NP/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1
• CR2032 Battery
  • Qty: 1
  • Source: Battery Junction https://www.batteryjunction.com/sony-cr2032-5pack
• Resistor 4.7K Ω (0805 package)
  • Qty: 4
  • Source: DigiKey [https://www.digikey.com/en/products/filter/chip-resistor-surface-mount/52...](https://www.digikey.com/en/products/filter/chip-resistor-surface-mount/52?s=N4IgjCBcoEwAwA4CsVQGMoDMCGAbAzgKYA0IA9lANogAsAdAOwAEA1gPIAWAtviALqkADgBcoIAKoA7AJbC2mALKFs%2BAK4AnQiAC%2BpALQxUIDJGHrVJclRAo%2BukHoCcRk2YukKkahDv3DXkEQ4JCZNfGl8YTJ1flIUaBBBKDAhJMgYJHsANiNpABMxPTA4CCFRSBAQUmEAT0EtCpUMbW0gA ""Filter for Resistor 4.7K Ω (0805 package)")
• Resistor 2M Ω (0805 package)
  • Qty: 4
  • Source: DigiKey [https://www.digikey.com/en/products/filter/chip-resistor-surface-mount/52...](https://www.digikey.com/en/products/filter/chip-resistor-surface-mount/52?s=N4IgjCBcoEwAwA4CsVQGMoDMCGAbAzgKYA0IA9lANogwAEAsgPIAWAtviALqkAOALlBABVAHYBLPo0z1C2fAFcAToRABfUgFoYqEBkh9F8kuSogUndSA0BOHXoNHSFSNQgXL2lyERwktZfhi%2BHxkilykKNAgPFBgvDGQMEiWAGw6YgAmghpgcBC8ApAgIKR8AJ48KkVyGKqqQA ""Filter for Resistor 2M Ω (0805 package)")
• Capacitor 0.1μF (0805 package)
  • Qty: 2
  • Source: DigiKey https://www.digikey.com/en/products/filter/ceramic-capacitors/60...
• PCB
  • Qty: 1
  • Source: Shared on OSH Park https://oshpark.com/shared_projects/GzuBZVdm

Log File

The GPS Log Files are named with the format of YYYYMMDD.txt, where the letters are the following:

• YYYY: 4-digit Year
• MM: 2-digit Month
• DD: 2-digit Day

The data is comma separated, with the following columns.

• ISO 8601 formatted time-stamp (UTC) e.g. 2009-10-17T18:37:26Z
• Latitude in Degrees
• Longitude in Degrees
• Elevation in Meters
• Heading in Degrees
• Speed in Kpm