SparkFun RTK Surveyor Kit Flight Controller the Meteor75 Pro is more

the Meteor75 Pro is more precise

and free-flying

2A USB power supply / Charger

but other firmware projects like betaflight will support this in the future

SparkFun RTK Surveyor Kit Flight Controller the Meteor75 Pro is morePLEASE NOTE: No UK power supply is included with this kit. You will need to supply our own appropriate USB 5V, 2A charger supply. The RTK Surveyor is a Bluetooth enabled multi band GNSS receiver based on the ESP32 from Espressif and the ZED F9P from u blox. Flip the switch and you'll have 300mm approximate accuracy out of the box and 18mm accuracy with RTCM corrections. This kit provides the L1 L2 antenna, adapters, interface cables, and chargers