"Most of the common units use the same chip."

"Frankly for a traveling camera drone, for personal use, the Zerotech Dobby blows the Mavic away. It is tiny. It has a Qualcomm Snapdragon processor, GPS, follow-me, orbit mode etc in a package as small as my smartphone. I can take it with me…"

"I think you need to describe your procedure in more detail for anyone to help. The message you indicate all are telling you that some of the calibrations have not been completed. In addition to the accelerometer you need to cal the compass and the…"

"Unfortunately the new ardupilot.org servers are so slow for me they are nearly unusable. I mean to the tune of minutes to load the pages.

When Michael does a radio cal he currently "records" the pwm values of all the channels that change during the…"

"It always shows the latest version, but it will not work on your boards. In the lower right of the screen there is the option to load old versions from the archive."

"3.4.4 will not run on APM. Normally it will not even try to install it if you have an APM flight controller. The APM is obsolete there will be no further updates beyond 3.2.1. So either you have a Pixhawk of some kind, or your Mission Plannner is…"

"Unfortunately that appears to be the case. I see no reason to delete the archive. The size of the files was small."

"The APM is still perfectly good for what it was designed to do. As long as you don't use it for an Octocopter and don't need new features that only run on the Pixhawk.
It is certainly possible that Mission Planner will evolve to a point that it will…"

"We have two components.
The flight controller - APM which resides on the aircraft. It runs firmware that is arducopter, in this case version 3.2.1. This firmware controls how the APM hardware functions as a flight controller.

On the ground we have…"

"Install the hex file using Mission Planner. Do not connect but set the com port. Go to the install firmware page and use the "custom firmware" button to specify your download file."

"On my machine it is under "program files/mission planner/gmapcache""

"Correct. APM FC will not run any firmware beyond 3.2.1 so it would not function if you tried to update."

"1: The maps are for your visualization, they are not used by the flight controller. You do not need to be connected to the FC to download maps.
2. I don't know
3.After you pre-fetch the maps you can plan the mission anywhere you choose.
4. Once the…"

"Yes, mission planner, unlike some windows software, does not put a lot of stuff in the registry. So you can have multiple versions in their own folders and start them up manually from inside the folder. I need this because I have some systems that…"