1 May 06 - GTX-327 and Dynon EFIS-D10A are talking

There are a few background projects going on right now, and although there was lots of time spent on a couple of them tonight, no progress worth documenting was made. Just finding out more stuff that doesn't work.

In other news, we're trying to get the Dynon and transponder on speaking terms. The documentation included in both systems unfortunately doesn't say things like "If you have a Dynon, relax! Here's the exact wiring diagram and the settings you need on your equipment. We've now saved you so much time that you should probably go get a Sierra Nevada Pale Ale and put your feet up for awhile."

That sort of documentation would be welcome, but it just ain't there. We've gotten quite a few good pieces of advice from the folks on the TVRVBG mailing list, and if you were one of those people, thanks. In any case, see below for exactly what we did to get this to work. Now go get yourself a Sierra Nevada Pale Ale and put your feet up for awhile.

First, let's start off with the settings that we've got on the Dynon - as you can see, we're using Format 4 and the resolution is 10 feet (it can also be set to 100 feet.)	Here's the Dynon documentation, which tells you actually what Format 4 means - seems to be the highest baud rate.
Back at the ranch: here are the settings for the GTX-327, although only "CHNL 1" makes any difference. What's an Icarus? I've no idea, but this is the setting that Stein Bruch (of SteinAir) says is the right one.	What the back of the transponder looks like - the two wires coming from the larger white bundle of wires at the top are the wires coming from the Dynon. On the right (cleco pointing to it) is the ground, and the left (gray pin puller tool) is the serial input.
Here's (woo-hoo) the final result - look at the higher resolution version of this picture, and you can see that the altitude shows up as being the same on both pieces of equipment.

We've recently decide to try to save a little time by getting SteinAir to build us the harness for the radio and intercomm, so that'll hurry the wiring process on considerably. Also, I'm waiting to get recently engraved parts back from Bill Esther, so this might be an exciting next few days. We'll see.

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