Hi,
Just wanted to ask the following question: would it be feasable to spoof the GPS TX stream on a Mavic Air 2 to get around the limitations? The idea is the following: install a small arduino (nano or Rasp. pico); the TX line from the GPS would go to a nano, and nano would also output the TX data back to the rest of the circuit.
Nano would read the incoming stream; it would apply a certain factor (2-4) to the altitude, i.e. for each additional 2-4 meters of real height above take-off point, it would add just one meter.
I wonder of there are any catches with this idea?
Possible issues:
- I assume that the GPS modules used in Mavic use standard plain ASC messages (no secure communication).
- Not sure if they may have a verification with barometric pressure, i.e. how DJI system would interpret a different altitude from GPS/pressure.
- I looked at the cable harness, it is pretty complicated to get physically; probably the best would be to open the GPS cover to get to the TX line and cut it there.
- the voltage levels probably is 3 V so a pico would be a better option.
Any thoughts about this idea?
Just wanted to ask the following question: would it be feasable to spoof the GPS TX stream on a Mavic Air 2 to get around the limitations? The idea is the following: install a small arduino (nano or Rasp. pico); the TX line from the GPS would go to a nano, and nano would also output the TX data back to the rest of the circuit.
Nano would read the incoming stream; it would apply a certain factor (2-4) to the altitude, i.e. for each additional 2-4 meters of real height above take-off point, it would add just one meter.
I wonder of there are any catches with this idea?
Possible issues:
- I assume that the GPS modules used in Mavic use standard plain ASC messages (no secure communication).
- Not sure if they may have a verification with barometric pressure, i.e. how DJI system would interpret a different altitude from GPS/pressure.
- I looked at the cable harness, it is pretty complicated to get physically; probably the best would be to open the GPS cover to get to the TX line and cut it there.
- the voltage levels probably is 3 V so a pico would be a better option.
Any thoughts about this idea?