I Designed and Built My Own Angle of Attack Indicator!

[@simonosborne5528]

Thanks for sharing, this will I am sure will help save many lives.

[@dan_der_flieger]

It has the potential to. Thanks for watching!

[@theflightpractitioner7288]

Brilliant!

[@dan_der_flieger]

Thanks!

[@AzTrailRider57]

Wow, WAY cool.

[@dan_der_flieger]

Thanks!

[@Mehozavr]

Just thought about how to make my own diy AoA sensor and found your video. Thank you for making this video and sharing details, especially for telling about rotary magnetic encoders, I didn't knew about them and planned to use two Hall sensors instead. One small suggestion -- seems like sensor measurements jitters so the indicator display changes frequently which may be distracting. Maybe using some simple smoothing algorithms like moivng average will help? Sure it adds some delay but angle of attack does not (normally) change drastically in fraction of a second.

[@dan_der_flieger]

No problem. Glad someone else is finding it useful. I originally designed the sensor to measure both pitch and yaw (e.g. a second wind vane and rotary encoder that rotates on a vertical axis) so you could potentially measure how close you are to a spin as well. At that point I was doing some smoothing on the Arduino. I think I was taking a reading from each rotary encoder every 50ms and then sending an average every 200ms or something like that. But after learning a little more about how Bluetooth LE subscriptions work, I found it was more efficient to just pass data when the reading changes, which might be almost immediate or not. Which would save power - for example, say you land somewhere and forget to power down the sensor - while it's sitting on the ramp it would only use power to send a BLE message when the reading changes rather than every Nth millisecond. As I'm thinking about it, it probably makes more sense to do the averaging on the Android device rather than on the Arduino within the sensor. Anyway, you've made a great observation and suggestion. Thanks!

[@BlueMax333]

Nice! Why not make it available to other pilots?

[@dan_der_flieger]

Hi Job. Thanks for watching! It actually IS available to other pilots. It's all open source so people can build their own. This is the first video in a playlist that shows how to assemble the parts yourself. The only thing I haven't posted yet is the 3D models because I haven't had an opportunity to test them enough. But you can find a list of parts, wiring diagrams, code for the Arduino and the Android side as well. Here's a link to a page on my website for more info: www.danderflieger.com/my-angle-of-attack-sensor And here's a link to the KZbin playlist: kzbin.info/aero/PLxrmWNrs-eflDOwBQS-R1qsKZQ1rDAkZt

[@BlueMax333]

@@dan_der_flieger Many thanks! will let others know

[@noriramesh]

Hi Dan …this is brilliant device, can you help build one unit for me ? I fly am experimental plane and would love to install this device ..if able. Kindly let me know

[@dan_der_flieger]

I have made the project open source. You can find details on my website and build your own: www.danderflieger.com I don't want to make this a business. My hope is that people can take what I've started and build it for their own use.

[@a3103-j7g]

from diy to die