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The OT sensor can't be "calibrated", but it can be checked - just did exactly that on the single wire sensor on a Long-EZ this morning. Heat up a pot of engine oil to 300F and buy a candy thermometer (be VERY careful - the last thing you want to do is spill 300F motor oil on you or your...

So magnetometers in the cockpit tend to be problematic - I might try moving it to the tailcone, up as high as possible to get it away from control pushrods and cables, as well as the wiring down low. If the PMAG's are putting out EMI/RFI, and feeding that into the main wiring, getting the...

So you didn't say where the adahrs is or where the magentometer is in your plane. Might be useful to know (or might not...). I've installed both Dynon and Garmin systems in many composite planes, and there's no reason that the magnetometer can't be accurate to within a few degrees (mine is, for...

Glad you got it working. While a tach signal is not a safety critical item, I'd still want to get the ECU repaired so that it worked correctly, and have Robert diagnose what may be causing the failure.

So the OP was clear that he's using the FlyEFII ignition system, and (obviously) the Dynon SV EMS. The FlyEFII puts out ~12V pulses (when it's working correctly) and the Dynon EMS, in the "Tachometer" section of the EMS installation chapter (7, in revision AG) clearly indicates that there are...

I've had multiple hardware issues with FlyEFII equipment on various aircraft. If you have access to an oscilloscope, I'd put a scope on the output line (green wire) from the EFII box and see if there's a ~12v square wave on it at approximately 2 pulses/rev. (estimate engine speed by sound and...

Since Pin 9 is the input 12V power for the trim motors, it's difficult for me to understand how your trim system can work at all if the CB feeding pin 9 is disconnected - no power should be able to flow to your trim motors. It sound to me as though you've got some parallel path for power/ground...

The installation manual clearly shows differences between the mounting of the C25 and X25 systems in chapters 16 and 17.

You've gotten a bunch of responses indicating great support for the knob panel. And if you have enough panel space for it and all the other stuff you want/need, I agree - it's very useful and helpful. But on my COZY MKIV panel, I would have had to lose either the COM head or the A/P controller...

I'm with Carl, particularly with respect to system failure mode issues. I've installed VPX's in customer's planes, and I've installed many non-VPX systems. For a day VFR plane, the VPX is nice and has some cool features (but it's a very expensive way to get those features). If you NEED the...

Why not just install a third fuel level sender, just like in the wing tanks, and measure the level in the header? Then you can set your alarms so that when you get 1/2 gallon below the top of the header tank, it goes red and starts yelling at you, and you ALSO get a full range indication of...

There is no regulation requiring an ILS and localizer approach for an instrument rating. There's a requirement for demonstrating three approaches - two non-precision, and one precision. See Appendix 7 of the Instrument Airman Certification Standards...

Why is a 175 not ideal for training? If that's what you want to use for the future, it would be what you'd want to train on. Why spend an extra $7K unnecessarily? The 175 is legal for IFR flight, and legal to train on, and legal to take the test on, since you can do three different types of GPS...

Excellent - thanks!

Well, if I type "curl --version" at the command line, it gives me the version info, so it looks like it :-).

Any chance of having a script that doesn't require downloading development software (WGET and all the things required to make that work) to use? I have a dead stock 15" Macbook Pro from Early 2013 running Catalina (10.15.7). Tried to install WGET and fell down that rabbit hole - gave up...

I would venture a guess that the volume control you're looking for is in your PS Engineering Audio Panel (you don't say which one you have). You'd need to know which input is being used to feed audio from the HDX to the AP, and then adjust the audio in the panel. Just a guess.

Yes. Any play or hysteresis in a feedback system can cause oscillations. To the extent possible, removing play and hysteresis is a good thing.

There's nothing in the v15 install manual about audio terrain alerts that I could find, and my HDX system doesn't give them (and I certainly don't recall turning them off during setup). The Garmin G3X, however, DOES do audio terrain alerts, and it's annoying as hell, given that I live in...

Bud, go here: http://www.aeroelectric.com/ and read Bob's stuff. The Book is available as a PDF here: http://www.aeroelectric.com/Catalog/pub/pub.html but I also recommend spending the $$$ to get the paper version, if for no other reason than to support Bob. In the book, Bob has a bunch of...