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In the wiring example you see the different variants in the connection. If a ground is added as the thrid wire in the bundle then you can connect it either to 21 or 22. 23 can also be used as it it a direct ground connection on the Dynon Display, but is has a default assignment as backup battery...

For the 37-pin connector both pins 1 and 2 go to the fuse of the 12V supply and both the pins 21 and 22 are connected to avionics ground, this takes care of the power supply to the Dynon display. You can connected the ground of the serial interface. Connecting the shield to the ground either add...

A question, the pilot;s User Manual says: Press the LEVEL button to engage the autopilot in Level mode. For safety in emergency situations, subsequent presses of the LEVEL button do not disengage level mode (unlike other AP mode switches). The level button transitions to 'STRAIGHT' mode which...

Some considerations: - On the engine - Getting all engine vibrations, pressure sensor might die early, - In front of the firewall (not on engine) - Vibrations reduced, still exposed to the hot environment, but the advantage is all pressurized full remains in front of the firewall, EMS wiring...

I think there is a note regarding using a single button for multiple displays, that states that there should be diodes in line for each of the displays so that if one display is powered off that the level button still works on the other display.

Could it be that the left display has the weather overlay selected?

Note that EarthX batteries have higher voltages then the regular lead based batteries

Did you install any updated Dynon software or is all exactly the same as before the problem appeared?

Maybe one idea: note that the video USB must be connected at startup to be recognized, it's not like normal USB that can be plugged in while the Dynon display is running.

Shoudln't happen, unless there is some strange configuration defined in one of the units. TO get some more information just try to power up one of the sceens separately. Unplug one and see whether the other boots normally end then repeat with the other one unplugged.

Your reporting on these issues is appreciated, you are certainly not just talking to yourself. I am very happy to share experiences of other pilots, I certainly don't want to have to experience all possible problems by myself

Just a boyscout compass (you must still have one somewhere in a drawer or the attic) should do, you are not performing a high resolution measurment, you are just trying to prove that there are no magnetic fields near the installed parts.

Getting two wires in a d-sub connector crimp pin is not always easy, it depends on the wire thickness. Adding 10 slices inside the connector also doesn't leave much room, but you don't want to do it outside the connector as that part of the cable probably needs to be flexible. Also the cable...

I wired all serial connections onto a 37-pin D-connector and created a mating solder D-connector that connects the spliced pairs by soldeting very short bridge wires directly on the connector. This allows me toverify connections between the different unit by removing the plug, and gives the...

Fair, expectations will vary based on conditions, is this a homebuild or a commercial produced plane. And also the specific examiner will matter with respect to his expectations. Also your comfort level plays into this, how well do you want to know the limitations of your specific piece of...

Yes, you should read all :(, not only to understand your plane, but also to be able to answer the examiner when he asks questions about the plane in which you are taking your check ride. As a pilot candidate, you are supposed to know all (about systems and the plane) that is required for the...

Thanks, that is high enough for the video interface. If is not too hard to get an image of the working unit, that would be great. I am looking for a spare part for my plane. I am not even near the Seattle area, TX, so picking it up is not really an option for me

I might be interested, do you have a photo showing the serial number?

but the capacitive sensors need separate calibration for different types of fuel (like avgas and mogas)

The are capacitive sensors available at aircraft spruce that allow you to bend the tube and make it fit withing your tank