Having been one to throw crazy ideal in rc planes before they were possible to buy... I do know a thing or two about it.
EM radiation - simple - mags kick off this neat effect that can screw up nearby electronics. So do radios etc. So using something homebuilt in electronics - can introduce this lovely issue where those signals get taken in as a sensor input instead of noise if there's not appropriate shielding etc used. PPM is the electronic signal sent to servos (at least rc variety) to make them work. The easy way to do it would be to use something like https://solarbotics.com/product/23226/ Attached to a plain old Arduino, it becomes almost cut and paste to code it for autopilot duty (basis of all quadcopter and most RC with gyro flight systems these days) But then I saw this is actually available now - and that's way more awesome. https://solarbotics.com/product/52066/ On a teensy LC - would be splendid! (Also near cut and paste for programming) Anyway, never like throwing control over to an independent device, yes you can always overpower a trim tab - but that doesn't mean you'll recognize the issue immediately. Your control being off center is more obvious in my eye than a unknown source of pitch that's independent from your direct controls - make sense? So if it's added in cockpit as part of a trim system - it functions, it's overrided easily, and likely close at hand if it's really screwing up and needing physical disconnection. My .02 On Sun, Sep 23, 2018, 12:35 PM Mike Stirewalt via KRnet < firstname.lastname@example.org> wrote: > I've no idea what EM radiation or PPM signals or "turning over control to > . . ." has to do with it. It's a simple device designed to keep the nose > from wandering and has nothing to do with trim tabs on elevators or, for > that matter, on the wing. A simple direct wired 12 volt gyro & servo > with a switch that can instantly turn it off or on and is connected to an > aileron cable (in my mind's eye anyway) with an easy break-away > connection. It takes only a slight pressure to bring a wing back level > so the servo involved would be a tiny little thing, easily over-ridden. > > Having never done this it's obvious I have nothing to go on except my > limited imagination but for something simple to keep the wings level in > cruise . . . seems like this would work. The "gyro" could be something > as simple as a bubble level with a contact (laser?) on each side of the > bubble that would activate the servo. Just something for smooth air . . > . which is at least 90% of our time in cruise. > > Activating the stick instead of an aileron cable seems more awkward. > > If someone thought this through and designed something that would easily > adapt to all sorts of Experimentals, LSA's and ultralights . . . I > suspect a simple, basic, easily-installed smooth-air wing leveler would > find a large market for those who don't already have or want an > autopilot. Might be a good business opportunity for someone with skill > and initiative. > > Mike Stirewalt > KSEE > > ____________________________________________________________ > He Transformed His Gut With One Thing > gundrymd.com > http://thirdpartyoffers.juno.com/TGL3141/5ba7dcca269c55cca14f6st04vuc > > _______________________________________________ > Search the KRnet Archives at > https://email@example.com/. > Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. > see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change > options. > To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org > _______________________________________________ Search the KRnet Archives at https://firstname.lastname@example.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org