I am a complete newbie to Arduino, programming, quadrocopters, this forum etc. but I received my APM 2.6 (external compass), uBlox GPS with Compass Kit, Radio Set (Frequency: 433 Mhz), APM Power Module with XT60 Connectors Kit, and MB1240 XL-MaxSonar-EZ4 High Performance Ultrasonic Range Finder from 3D Robotics a few days ago. I plan to use these for a quadrocopter project.
I haven’t built this kit into a frame yet but I have connected the peripherals to the APM 2.6 and have blutacked them into position in a shoe box lid for the moment (I’ll explain this bit later).
I am using a Windows 7 32 bit laptop, I’ve made sure that the COM Port and Baud Rate are assigned correctly (COM10 and 115200, respectively) and I’ve made sure that I am using the latest Mission Planner and AMP Planner software (1.2.94 build 1.1.5147.31144 and v2.0.0 [RC3], respectively). I also correctly installed the device driver software, manually, for the APM 2.6 so that it appears under the COM/Ports section in my Device Manager Suite.
During Initial Setup, the firmware installed from Mission Planner to my APM 2.6 no problem. I managed to get the Mavlink connection to work earlier but then the software wanted to calibrate the sensors on the APM 2.6.
At this point, I only had the peripherals connected to the APM 2.6 and I didn’t have anything to keep everything level and in the correct position for calibration. So I used Blutack and a shoe box lid to keep the components in a fixed position relative to each other, which would allow me to tilt the APM 2.6 on its side when told to do so by the calibration section.
Unfortunately, I had accidentally pressed a button on my keyboard so the calibration section of Mavlink had moved on past a few APM 2.6 calibration orientation requests and I wanted to go back just those steps but the software’s ‘Back’ button took me all the way back to — and restarted — the Mavlink connection process.
This attempt failed after it got stuck on ‘Got param RTL_LOIT_TIME’. I clicked on ‘Cancel’ and, in the same Mavlink window, received a message along the lines of ‘only one heartbeat received’. I clicked ‘Close’ and tried to reconnect, using the button in the top right hand corner of Mission Planner. This produced a message saying ‘no heartbeat packets received’ so I closed that window and clicked on the Wizard in Initial Setup and the same problem with the Mavlink connection getting stuck on ‘Got param RTL_LOIT_TIME’ occurred. It occurred again after I’d tried reinstalling the firmware first! This problem has occurred every time since, when I have tried to reconnect, even if I reset the APM 2.6 using its reset button and/or took the USB cable out of my laptop and reconnected that before running the Mavlink connection process.
I tried to sort this by uninstalling and reinstalling the device driver, Mission Planner and AMP Planner software but to no avail; the getting-stuck-on-‘Got param RTL_LOIT_TIME’-problem still occurs.
I don’t know what to do and haven’t been able to find the solution online. It’s exasperating because I had it working earlier!
I really hope one of you kind people can help me get this working again.
Thanks in advance for reading,