Hex Here2

The Here2 GPS receiver is an update to the Here GPS module from HEX.

Main features include:

Concurrent reception of up to 3 GNSS (GPS, Galileo, GLOSNASS, BeiDou)
Industry Leading -167 dBm navigation sensitivity
Security and integrity protection
Supports all satellite augmentation systems
Advanced jamming and spoofing detection

Where to Buy

ProfiCNC (Australia)
Other resellers

Configuration

Setup and use on PX4 is largely plug and play.

:::note

If the GPS is not detected then update the Here2 firmware.
If the GPS is detected but does not work, attempt the process outlined in allocating node uavcan ID. :::

Wiring and Connections

The Here2 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 Here2 GPS pinout is provided below. This can be used to help modify the connector for other autopilot boards.

Here2 GPS

Pixhawk 3 Pro GPS

VCC_5V

VCC

GPS_RX

GPS_TX

GPS_RX

SCL

SDA

BUTTON

BUTTON_LED

GND

Specification

Processor: STM32F302
Sensor
- Compass, Gyro, Accelerometer: ICM20948
- Barometer: MS5611
Receiver Type: 72-channel u-blox M8N engine, GPS/QZSS L2 C/A, GLONASS L10F, BeiDou B11, Galileo E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN
Navigation Update Rate: Max: 10 Hz
Positionaing Accuracy: 3D Fix
Time to first fix:
- Cold start: 26s
- Aided start: 2s
- Reacquisition: 1s
Sensitivity:
- Tracking & Navigation: -167 dBm
- Hot start: -148 dBm
- Cold start: -157 dBm
Assisted GNSS
- AssistNow GNSS Online
- AssistNow GNSS Offline (up to 35 days)
- AssistNow Autonomous (up to 6 days)
- OMA SUPL& 3GPP compliant
Oscillator: TCXO (NEO-8MN/Q)
RTC crystal: Build in
ROM: Flash (NEO-8MN)
Available Antennas: Active Antenna & Passive Antenna
Signal Integrity: Signature feature with SHA 256
Protocols & Interfaces:
- UART/I2C/CAN: JST_GH Main interface, Switch internally.
- STM32 Main Programming Interface: JST_SUR

PreviousLOCOSYS Hawk A1 GNSS NextHolybro M8N & M9N GPS

Last updated 1 year ago

Wiring and Connections

The Here2 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 Here2 GPS pinout is provided below. This can be used to help modify the connector for other autopilot boards.

Here2 GPS

Pixhawk 3 Pro GPS

VCC_5V

VCC

GPS_RX

GPS_TX

GPS_RX

SCL

SDA

BUTTON

BUTTON_LED

GND

Specification

Processor: STM32F302

Sensor

Compass, Gyro, Accelerometer: ICM20948
Barometer: MS5611

Receiver Type: 72-channel u-blox M8N engine, GPS/QZSS L2 C/A, GLONASS L10F, BeiDou B11, Galileo E1B/C, SBAS L1 C/A: WAAS, EGNOS, MSAS, GAGAN

Navigation Update Rate: Max: 10 Hz

Positionaing Accuracy: 3D Fix

Time to first fix:

Cold start: 26s
Aided start: 2s
Reacquisition: 1s

Sensitivity:

Tracking & Navigation: -167 dBm
Hot start: -148 dBm
Cold start: -157 dBm

Assisted GNSS

AssistNow GNSS Online
AssistNow GNSS Offline (up to 35 days)
AssistNow Autonomous (up to 6 days)
OMA SUPL& 3GPP compliant

Oscillator: TCXO (NEO-8MN/Q)

RTC crystal: Build in

ROM: Flash (NEO-8MN)

Available Antennas: Active Antenna & Passive Antenna

Signal Integrity: Signature feature with SHA 256

Protocols & Interfaces:

UART/I2C/CAN: JST_GH Main interface, Switch internally.
STM32 Main Programming Interface: JST_SUR