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The primary function of OnSpeed is to represent aircraft energy states using audio tones. Recognizing that some folks like visuals as well, we developed a version of the F4 Phantom display based on my experience developing AOA indicators. In order to enhance sunlight readability, I developed a...

Nice work. If you could display a representation of the OnSpeed energy display, it would be very interesting to our group (www.flyonspeed.org). We have published all the FOS code on github, plus I have developed a library of flight instruments, including the energy display, that I can provide...

Back in 2013, I developed an autotrim system to work with my SkyView system because Dynon did not offer one (yet). Later, Dynon introduced their AP Panel that provides this function and the extra buttons for convenience and/or expert mode. My autotrim controller only needs one button/lamp plus...

My ears are burning… www.huvver.tech Vern

About 20 years ago, when I was building my RV-9A, I recognized the need to develop custom avionics devices. Many of these are still sold commercially. The two largest costs in an electronics product are often packaging (cases) and shipping. This lead me to select a particular type of...

I would recommend not cutting them, rather just loop them up and secure with a zip tie. One day you may need them.

What you want is provided by www.flyonspeed.org This is open-source technology and won the 2021 EAA Grand Championship Founders Innovation Award at Oshkosh. What we hope is to establish the technology and work with EFIS vendors to adopt it. And yes, it emulates the F4 system.

Here is a persistent error in the documentation (minor but annoying): In the System Installation Guide (current AN), the SYSTEM data stream says the follow: 90 2 Checksum The 1 byte sum of all 73 preceding bytes. In 26-7sci-hexformat, so 3A = 0x3A Should say: 90 2 Checksum The 1 byte sum of...

Read my original post. Aircraft not flying. I have a 12V power supply temporarily powering the aircraft. I should have used an alligator clip, you know, the FAA certified kind 😉

Here is the original SkyView hub I designed in 2011. It does all of the serial port and other signal (contacts, audio and dimmer) bussing and allows tapping off to connecting to other instruments. Makeplane.org sells these now. Note: these hubs can be daisy chained by adding solder-cup...

To Dynon support: I have noticed that your EMS serial sentence replicates the Fuel Flow information in both Fuel Flow 1 and Fuel Flow 2 fields. Is this because a second sensor has not been installed? I would have assumed it would be XXX. If I configure the Fuel Flow 2 input, I assume the...

Thanks for reaching out. The external AOA indicator is one of the instrument pages available on the huVVer-AVI device available at http://makerplane.org/. There are currently: ASI, ALT/VS, HDG, AI, AOA, ONSPEED, and three types of engine instrument pages. I have mounted one on the...

Not a true HUD, but it keeps your head up. From huvver.tech, Originallyy developed as an OnSpeed display, now a complete set of flight and engine instruments. My new build has 8 of them, including two glareshield displays, one as a tailBeaconX controller, and the other 5 displaying flight or...

For 10 years, I have been flying behind a custom autotrim controller that I designed to work with my SkyView system (and predates Dynon's offering). It can drive up to 7 amps per motor, and it has built in take/off and landing presets for both trim axes and flaps. That's the good news. The...

I recall that if you connect the two SV screen Contact 1 inputs together, some wonky things happen with the autopilot. It's a WAG guess here, but easy to try, by disconnecting one of them. Vern

Ouch! The huVVer-AVI displays that we developed are not 'homebrew’ devices. They were developed specifically to provide sunlight-readible displays for the OnSpeed advanced angle of attack systems, which won the Oshkosh 2021 Grand Championship award for flight safety. In addition to the...

For reference, here's how I did BT. From 2014 Vern

I had one melt in my Harmon Rocket and one break in my S-21 (not flying). In both cases, I made new bases out of phenolic. That's a 100% failure rate. New base shown below:

This is an updated schematic diagram, which more clearly indicates the resistor network that I used for sensing switched +14V signals In this case, power to EMag ignitions and the fuel pump. The pin 9 of the DSUB connects to one of the EMS grounds. Vern

Neither. The more efficient you engine, the lower your HP setting in the SV. You twiddle this setting until your PK setting matches the EGT peak. https://preflight.dynonavionics.com/2014/02/did-you-know-percent-power-dynon-way.html?m=1 Vern