NANO Helix RTK receiver¶
NANO Helix RTK receiver is a high-precision RTK receiver designed and manufactured by DATAGNSS.
It’s based on the new generation Allystar dual-core GNSS SoC. It supports RTK functionality with a maximum data update rate of 5Hz. It includes two models, one is v1.0.0 without compass, and another is Rev.A with compass.
Note
NANO Helix RTK Receiver doesn’t support Moving Base mode.
Where to Buy¶
Key Features¶
GPS/QZSS/BDS/GLONASS/GALILEO/IRNSS
Multi-bands, support L1+L5/L1+L2
Support RTK,output rate 5Hz
Standard UART serial interface
Lightweight only 26g
High performance antenna
GNSS¶
Allystar CYNOSURE IV GNSS SOC
Dual core
3D accuracy: 1.5m CEP
RTK accuracy: 2cm +1PPM(H), 3cm+1PPM(V)
Interface¶
UART, 230400bps default
SMA connector for antenna
Output rate 5Hz default
Main power supply,4.7~5.2V
Protocol¶
NMEA-0183 output
RTCMv3 input/output
Environment¶
Operating temp. -20~85℃
Dimession and weight¶
65*30mm
26g
Pin definition¶
The board is connected to the autopilot via UART interface.
The 1.25mm pitch 6P connector (from Left PIN1 to PIN6) :
1: GND
2: NC
3: NC
4: Rx
5: Tx
6: 5V
Please note that only Rev.A includes RTK and compass. If the model support compass, pin2 and pin3 output compass I2C interface.
ArduPilot Setup¶
For example, NANO Helix RTK Receiver is connected to the autopilot’s SERIAL4 port, it should work with :
SERIAL4_PROTOCOL = 5
GPS1_TYPE = 5
Note
if you use 4.5 or earlier firmware, it should be GPS_TYPE = 5.
Configuration¶
RTK technology requires a base and a rover, with the base placed on the ground, which is referred to as the rover on the drone.
The data from the base needs to be transmitted to the drone via telemetry radio and inputted into the RTK receiver on the rover.
NANO RTK Receiver family for UAV:
Base station setup¶
Please refer to the following link for the full base station setup guide: - Base station setup
Rover station (Aircraft) setup¶
Please refer to the following link for the full rover setup guide: - Rover station setup