If you made a Naked GoPro, you are probably left with a GPS module from the original GoPro. Don’t throw it away! You can use it on your quad, it works brilliantly with Betaflight and iNav.
It’s actually quite a sensitive GPS module, on par with the BN180 if not more. It get s a 3D fix within a minute or two for me (about the same as the BN180).
It’s very light weight, at only 2.7g! It’s almost half of the weight of the BN180 (5.1g), but heavier than the NamelessRC TinyGPS (1.6g).
Dimension: 15mm x 35mm x 3mm
It could be easily mounted on most micro FPV drones, like the Rekon3.
GoPro GPS Module Pinout
The wiring of the GoPro GPS module to the flight controller is very similar to other GPS modules, there are four connections: 3.3V, GND, TX and RX. The GoPro GPS module takes 3.3V as input voltage, and it connects to one of the spare UART on the FC (TX to RX, RX to TX).
Note that the pinouts of the GPS module from the Hero 6/7 and Hero 8 are different. The GoPro 6 and 7 have 8 pins while the Hero 8 has 10 pins.
Here’re a few more close up shots of the module, top and bottom. Make sure the ceramic antenna is facing upward when mounted on your quad.
Betaflight Setup is exactly like using normal GPS module.
Take a look at my tutorial on how to setup GPS in Betaflight. Settings in Betaflight are:
- In the ports tab, set baud rate to 9600
- In Configuration tab, set GPS protocol to UBLOX, and the rest of the settings set to auto
There’s no LED indicator, so unfortunately you won’t know when the GPS is working or not, until it’s actually working.
Update (July 2021)
Thanks to Ujjwal Kumar, he’s able to get the LED indicator to work on the GPS module from Hero 6 and 7. Connect the LED left pin to ground, and short the purple pin to 3.3V as shown in the picture below.
GPS Pin out for Hero 6/7 from this video: https://www.youtube.com/watch?v=araU2PpAMlg
And the Hero 8: https://www.youtube.com/watch?v=ZneZOIxjafg