Ublox Neo M8N

From WikiRotors
Jump to: navigation, search
The Radiolink M8N GPS is a GPS locating device for UAV, used for blackbox flight localisation recording and/or real time localisation.
Ublox Neo M8N

Radiolink M8N GPS with Compass[edit]

The Radiolink M8N GPS comes with a compass using the honeywell HMC5983.

Pinout with Compass[edit]

[1]

Depending on the setup, the M8N can be connected to UART. On a SP Racing F3, if using the HMC5983 external compass of the Radiolink M8N with onboard HCM5833, the user must specify which mag_hardware to use via CLI: https://github.com/iNavFlight/inav/blob/master/docs/Cli.md If the HCM5833 is removed, no configuration is needed in CF/iNAV, only a connection to the I2C port is needed.

The mating female connectors must be adapted to fit the NAZE32 or SP Racing F3 boards. The included connectors are too large to fit into the mating connectors.

Connect to UART

Color GPS SP Racing F3
Black Ground Ground
Red +5V +5V
White Rx Tx
Orange Tx Rx

Connect to I2C for external compass

Color GPS SP Racing F3
NULL NULL NULL
NULL NULL NULL
Green SCL SCL
Yellow SDA SDA

The wiring order must be rearranged at the connector to mate with the corresponding SP Racing F3 pinout.

Banggood M8N Mini GPS[edit]

Pinout with Compass[edit]

Depending on the setup, the M8N can be connected to UART 2 or 3. On a SP Racing F3, if using the external compass, the compass can connect to I2C1. NOTE: if the flight controller's compass is a HMC5883 and the external compass laso has a HMC5883, then there will be a conflict--the user must physically disable the flight controller's compass chip by either desoldering or cutting the traces to the HMC5883 chip. See SP_Racing_F3_Flight_Controller#Magnetometer_Conflict_M8N_GPS_with_Compass

The wiring order must be rearranged at the connector to mate with the corresponding SP Racing F3 pinout.

Connect to UART

Color GPS SP Racing F3
Black Ground Ground
Red +5V +5V
Yellow Rx Tx
Green Tx Rx

Connect to I2C for external compass

Color GPS SP Racing F3
NULL NULL NULL
NULL NULL NULL
Orange SCL SCL
Blue SDA SDA

Pinout Without Compass[edit]

Depending on the setup, the M8N can be connected to UART 2 or 3.

Color GPS SP Racing F3
Black Ground Ground
Red +5V +5V
Blue Rx Tx
Orange Tx Rx

Plug and play with iNAV and SP Racing F3. Out of the box, the M8N GPS Module has the Rx and Tx wires switched when connecting with a SP Racing F3 board and this is correct. On the M8N GPS Module, the Blue Rx wire from the GPS Module goes to Tx on the SP F3 and the Orange Tx wire goes to Rx.

Baud Rate[edit]

Default 9600

iNAV[edit]

The M8N will work with iNAV out of the box without the need for manual configuration using u-center. In iNAV, turn on GPS, UBLOX, and enter in the magnetic declination. For the port, if using UART 2 for example, then only switch on GPS and baud rate (UART 2's MSP and Serial Rx port will be off).

https://github.com/iNavFlight/inav/wiki/5.-GPS--and-Compass-setup

Ublox U-Center (OBSOLETE)[edit]

If for some reason, there are issues connecting to the M8N Module, the user can try manually configuring the M8N Module via u-center.

Download Evaluation Software - u-center for Windows

https://www.u-blox.com/en/product-resources/2779

Connect to the M8N GPS module via a FTDI adapter.

Ublox U-Center Configuration[edit]

Youtube user Painless360

https://www.youtube.com/watch?v=8FIi_xuH4Vo

References[edit]

  1. http://www.radiolink.com.cn/doce/product-detail-115.html