HEX/ProfiCNC Here+ RTK GPS
The Here+ RTK GPS receiver is a small, light and energy efficient RTK GPS, based on the u-blox M8P. Using RTK, PX4 can get its position with centimetre-level accuracy, which is much more accurate than can be provided by a normal GPS.
Purchase
- ProfiCNC
- Hex - China (China)
- Other resellers
Configuration
RTK setup and use on PX4 via QGroundControl is largely plug and play (see RTK GPS for more information).
Wiring and Connections
The Here+ GPS comes with an 8 pin connector that can be inserted directly into the Pixhawk 2 GPS UART port.
The Pixhawk 3 Pro and Pixracer have a 6 pin GPS port connector. For these controllers you can modify the GPS cable (as shown below) to remove pin 6 and 7.
Pin 6 and 7 are for the safety button - these can be attached as well if needed.
Pinout
The Here+ GPS pinout is provided below. This can be used to help modify the connector for other autopilot boards.
pin | Here+ GPS | pin | Pixhawk 3 Pro GPS |
---|---|---|---|
1 | VCC_5V | 1 | VCC |
2 | GPS_RX | 2 | GPS_TX |
3 | GPS_TX | 3 | GPS_RX |
4 | SCL | 4 | SCL |
5 | SDA | 5 | SDA |
6 | BUTTON | - | - |
7 | BUTTON_LED | - | - |
8 | GND | 6 | GND |