Uploaded February 2025 | Updated September 2026, 2 weeks ago
You can learn more on the blog here: news.sparkfun.com/13143
Get your SparkFun RTK Postcard here: sparkfun.com/sparkfun-rtk-postcard.html
The portability shield: sparkfun.com/sparkfun-portability-shield.html
Antenna used: sparkfun.com/iridium-gps-glonass-passive-antenna.html
See the original product showcase with our founder Nathan here: youtu.be/t00t77OuVi4
Designed and manufactured in Boulder, CO USA, the SparkFun RTK Postcard is a compact development board for your high-precision positioning and navigation needs. This board combines the Quectel LG290P GNSS RTK receiver with an Espressif ESP32-PICO-MINI-02 MCU module, running our latest RTK Everywhere firmware. The ESP32 provides the SparkFun Postcard with WiFi and Bluetooth® connectivity to operate as an NTRIP caster or client. Meanwhile, the 4-pin locking JST-GH connector allows users to transmit or receive RTCMv3 messages for RTK corrections from a local base station.
You can learn more on the blog here: news.sparkfun.com/13143
Get your SparkFun RTK Postcard here: sparkfun.com/sparkfun-rtk-postcard.html
The portability shield: sparkfun.com/sparkfun-portability-shield.html
Antenna used: sparkfun.com/iridium-gps-glonass-passive-antenna.html
See the original product showcase with our founder Nathan here: youtu.be/t00t77OuVi4
Designed and manufactured in Boulder, CO USA, the SparkFun RTK Postcard is a compact development board for your high-precision positioning and navigation needs. This board combines the Quectel LG290P GNSS RTK receiver with an Espressif ESP32-PICO-MINI-02 MCU module, running our latest RTK Everywhere firmware. The ESP32 provides the SparkFun Postcard with WiFi and Bluetooth® connectivity to operate as an NTRIP caster or client. Meanwhile, the 4-pin locking JST-GH connector allows users to transmit or receive RTCMv3 messages for RTK corrections from a local base station.
