My problem is, after connection is established, Droidplanner shows the Armed/Disarmed status of the APM. I can also Arm/Disarm from Droidplanner on the tablet (the motors start at slow speed).
But no data from the APM are shown, not the inclination, speed, height, fix… nothing.
This is strange and I could not fix this issue so far
Hello.
I solved the problem, and I hope this can help other people.
When I did the first tests, I had the BT module connected to the APM board with long, clumsy wires and the voltage divider resistor soldered on the RX line of the BT module. And I had the data trasfer problem I described.
Then I got rid of the messy wiring, shortened the cables and eliminated the resistors.
Now it works LOVELY, and transfers all data
My advice is: don’t use the the voltage divider (in this application) and make a proper wiring, also considering the transfer speed.