SparkFunGPS-RTK2 Board - ZED-F9P (Qwiic) High-Precision Breakout No Soldering Required Breadboardable Contains a Rechargeable Backup Battery Allowing a Warm-Start decreasing time-to-First-fix

I needed to build a RTK GPS Base Station for outdoor GPS RC Car racing and this ZED-F9P RTK GPS module filled the bill. The ZED-F9P was easy to configure for evaluation purposes and when later paired with a Sparkfun ESP32 WROOM C, a Sparkfun 20 X 4 Serial LCD Display, and a Sik 915 MHz telemetry radio became the basis for my completed RTK GPS Base Station using the Survey-in mode.

The UBX product, software, & support is great, as is SFE's. My only problem was with the 10-pin header and I2C lines which were severed when I desoldered (w/ Hakko gear) the header pins when adapting one module to a new prototype PCB. The copper plating on the header lifted off disconnecting the trace to the other three access points, so no I2C for me. In all honesty, those pads seem kind of delicate. Call me clumsy or maybe I got in a rush, but moving those traces inboard would help. Anyway, after some delicate soldering with #30 wirewrap wire we're good. We've bought five of these boards so far with more orders to come, so no big deal - especially now that all of the modules have been configured for the new board design.

wrong item shipped but an immediate solution provided by Sparkfun