X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=O/h7h11W c=1 sm=1 tr=0 a=9QDXvCP0elpznEJbWf9F3Q==:117 a=JBFolyDoGHsA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=ZOGETzcKAAAA:8 a=eRLigfuSAAAA:8 a=NEAV23lmAAAA:8 a=v2o7_PZLEocYLcR5-9sA:9 a=SsroXzN97EJaijJw:21 a=QpviERXruxwl8rB-:21 a=QEXdDO2ut3YA:10 a=fuIAU_1X6DzBUWBSqL0A:9 a=9q-6ziAuNRj7LjsD:21 a=F1f4Gk873G46lVCQ:21 a=EysJot2xgkCHc4fX:21 a=Urk15JJjZg1Xo0ryW_k8:22 a=o_2oZySQXvBChP38Vmgs:22 a=BfhXYjFvZD4iae-mNffo:22 From: "Andrew Martin andrew@martinag.com.au" Received: from mail-qt0-f173.google.com ([209.85.216.173] verified) by logan.com (CommuniGate Pro SMTP 6.2.7) with ESMTPS id 11658212 for flyrotary@lancaironline.net; Tue, 18 Sep 2018 12:17:30 -0400 Received-SPF: none receiver=logan.com; client-ip=209.85.216.173; envelope-from=andrew@martinag.com.au Received: by mail-qt0-f173.google.com with SMTP id g44-v6so2202696qtb.12 for ; Tue, 18 Sep 2018 09:17:31 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=martinag-com-au.20150623.gappssmtp.com; s=20150623; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=omBLIeJnpnU0WZZ9BL4g/sghgqjQ6feUeVPxvemy8bE=; b=iVOMbqun12jlso4rBaAkdbRquJm6R+ETVxSFrLFVcg9K+2aizf6b9pZdlfHY1sgJIK DK+VKZpD+JxL0wnHGb02UAEdmlgMG/DunKyZev7LTFWO+71rA61nR8HGEgjMJcNeLTVs kW596CPbetjYcT4tXRzdR9e4v9ElLnedAWf1DN0psp4OIuxf+UQuagBtXcYDAtDuZhsh TbX8TkvfEXavC+/4QM/wcqIAZWLeqA6YO/SxCYsAzPhkVehCJoAI5vZ45yxpb4D9CcyK Rn+xdJdB/59NfZ/h9P4zcVD1lppQbMJ2iJED2YGFz4gTkVBaNhjUG/Fp+SVJZSa/qdGL GgVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=omBLIeJnpnU0WZZ9BL4g/sghgqjQ6feUeVPxvemy8bE=; b=KaoU8wTtUkdo91TrnCXWKdyFeYIOIC4/ObADYgHxmF72cNGwxYE6dZqsne0LO7S1zx Z6yJQyAuUpZsbhZUgPiAAcvSLygW/GMjkpU4VopJ7tsrwmM9e/94zvOzh//CUKd8NR/D OY4oe5n0aZ2YDu6orjiCamf8XeW2b0N0Z0Ij5niiIQzIW8+OhsVhyZ04RThx5COjlxVV VgxUlekrmBau+E2bTwMH6yUihUirh4SG17kwlWr+7UNwUZ+F2pPR8+fvx2dTRxAlz234 CQd1ZHlD4mT+AHy6WPZaF0O7+q7YQxFnFoEIrItvtPlzm0jcZfRNucL3RyR/BHFM3vcb OhGA== X-Gm-Message-State: APzg51BZk1++3IvMNFuFOD8LxB20hKNh0bGbkiOiVM8vysyU51yfJzUu TLQZyRgrdCMK9jb3UG3f/YUyBIENp3MOTKNXxElWrMI= X-Google-Smtp-Source: ANB0VdaiN+MPgFojyAiLsfJ7urFM2FWUx91TMp6cw7oBIXd/viXuLOQtWjGylUslgMf953Df62Rbd185jLJ5KWX83sA= X-Received: by 2002:a0c:f1cd:: with SMTP id u13-v6mr21292605qvl.114.1537287433199; Tue, 18 Sep 2018 09:17:13 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Wed, 19 Sep 2018 00:17:00 +0800 Message-ID: Subject: Re: [FlyRotary] Re: Arduino To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="0000000000005fbbc90576279f62" --0000000000005fbbc90576279f62 Content-Type: text/plain; charset="UTF-8" Matt, I used the sensor that came with the prop controller that came with the prop, original controller was not really compatible as the designer would not give access to code to adjust rpm limits. I let the smoke out trying to break into it also. Apparently that voids the warranty. Sensor is VR. Thanks to your post I now have half an idea of whats needed to tame the signal. The MAX9926 is pretty small though. Are there any pre made boards? The brickrpm seems long out of production. Todd. Yeah, but I reckon those titles are sometimes a stretch of my actual ability. I would prefer that the prop controller was integrated with the ECU or at least can comunicate with it. then pitch could be set automatically to engine load and programmed to recognise each phase of flight, rather than just being CS. If Tracy actually lets me have a copy of the arduino EM3...... Andrew On Tue, 18 Sep 2018 at 2:59 pm, Todd Bartrim bartrim@gmail.com < flyrotary@lancaironline.net> wrote: > Hey Andrew; > I assume you are the chief pilot and flight engineer for Ruffasgutsair? > I don't know enough at this point to make any critical judgment of code, > but it looks like something I would try except that, many years ago I > bought IVO's electronic constant speed governor, which does a reasonable > job. I've got to spend some time calibrating it again for these new prop > blades. If for some reason it fails to perform as it should, I will > certainly try your code in my own Arduino based prop controller. > Right now my focus is a data-logger using Loguino for code. I have all > the EM2 data on a ribbon cable waiting to plug into my project when it's > ready, most of the hardware is here, I've just got to finish understanding > the Loguino code and tweak it to suit my needs. > The next project I've got in mind is an automatic yaw damper. Previously > my plane flew with very little required rudder in almost all phases of > flight, but now it varies from needing a lot in climb to a little in cruise > to none in slow cruise/descent. I realize this isn't unusual, but it's > quite different from this planes previous flight characteristics. I'm > assuming the coarser pitch prop would affect this (IVO deep-pitch Magnum), > but also I have to assume that the new mini-tundra tires in the new > tailwheel position are being pushed by the corkscrew slipstream. > Anyways, now that I've all but eliminated any rigging issues, I figured > I'd build a bias spring electric yaw damper and have almost all the parts > here to build this, but then tonight I had a brain fart and thought "what > if I use an accelerometer break-out board with an Arduino to automate the > yaw damper?" As they are commonly used by builders to control robots, they > are cheap and plenty of code available. I just gotta figure it out. Do I > need this? Absolutely not! But I think I'm gonna do it anyways. > > Todd... easily distracted > > > Todd Bartrim > > On Mon, Sep 17, 2018 at 7:05 PM, Matt Boiteau mattboiteau@gmail.com < > flyrotary@lancaironline.net> wrote: > >> Andrew, what hardware did you use for Tach input? The MAX9926 is a >> wonderful chip. >> http://brickems.com/brickrpm/comparison/ >> >> - Matt Boiteau >> >> On 2018-09-17 8:20:55 PM, Andrew Martin andrew@martinag.com.au < >> flyrotary@lancaironline.net> wrote: >> >> If anyone is interested, My Arduino electric constant speed controller is >> on Github. just click the green clone or download button to get code. >> https://github.com/apmartin00/Plane >> >> Software works well. I just need better filtering of rpm pickup in >> hardware as it gets unstable at higher rpm. When controller is turned off >> reverts to manual pitch control so is quite safe to use. >> Feel free to add comments or make code better.... or laugh at my attempt >> at this. >> Andrew >> >> >> >> > -- Regards Andrew Martin Martin Ag --0000000000005fbbc90576279f62 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Matt, I used the sensor that came with the prop= controller that came with the prop, original controller was not really com= patible as the designer would not give access to code to adjust rpm limits.= I let the smoke out trying to break into it also. Apparently that voids th= e warranty. Sensor is VR. Thanks to your post I now have half an idea of wh= ats needed to tame the signal. The MAX9926 is pretty small though. Are ther= e any pre made boards? The brickrpm seems long out of production.

Todd. Yeah, but I rec= kon those titles are sometimes a stretch of my actual ability.
=C2=A0I would prefer that the prop controller was integrated wit= h the ECU or at least can comunicate with it. then pitch could be set autom= atically to engine load and programmed to recognise each phase of flight, r= ather than just being CS. If Tracy actually lets me have a copy of the ardu= ino EM3......
Andrew

On Tue, 18 Sep 2018 at 2:59 pm, Todd Bart= rim bartrim@gmail.co= m <= flyrotary@lancaironline.net> wrote:
Hey Andrew;=C2=A0
=C2=A0 =C2=A0I assume you are the chief pilot and flight engineer = for=C2=A0Ruffasgutsair? I don't know enough at this point to make any c= ritical judgment of code, but it looks like something I would try except th= at, many years ago I bought IVO's electronic constant speed governor, w= hich does a reasonable job. I've got to spend some time calibrating it = again for these new prop blades. If for some reason it fails to perform as = it should, I will certainly try your code in my own Arduino based prop cont= roller.
=C2=A0 Right now my focus is a data-logger using Loguino = for code. I have all the EM2 data on a ribbon cable waiting to plug into my= project when it's ready, most of the hardware is here, I've just g= ot to finish understanding the Loguino code and tweak it to suit my needs.<= /div>
=C2=A0 The next project I've got in mind is an automatic yaw = damper. Previously my plane flew with very little required rudder in almost= all phases of flight, but now it varies from needing a lot in climb to a l= ittle in cruise to none in slow cruise/descent. I realize this isn't un= usual, but it's quite different from this planes previous flight charac= teristics. I'm assuming the coarser pitch prop would affect this (IVO d= eep-pitch Magnum), but also I have to assume that the new mini-tundra tires= in the new tailwheel position are being pushed by the corkscrew slipstream= .
=C2=A0 Anyways, now that I've all but eliminated any riggin= g issues, I figured I'd build a bias spring electric yaw damper and hav= e almost all the parts here to build this, but then tonight I had a brain f= art and thought "what if I use an accelerometer break-out board with a= n Arduino to automate the yaw damper?" As they are commonly used by bu= ilders to control robots, they are cheap and plenty of code available. I ju= st gotta figure it out. Do I need this? Absolutely not! But I think I'm= gonna do it anyways.

Todd... easily distracted

<= br clear=3D"all">
To= dd Bartrim

On Mon, Sep 17, 2018 at 7:05 PM, Matt Boitea= u mattboiteau@gm= ail.com <flyrotary@lancaironline.net> wrote:
Andrew, what hardware did you use f= or Tach input? The MAX9926 is a wonderful chip.
http://brickems.com/brickrpm/comparison/

- Matt Boiteau

On 2018-= 09-17 8:20:55 PM, Andrew Martin andrew@martinag.com.au <flyrotary@lancaironline.net> w= rote:


If anyone is interested, My Arduino electr= ic constant speed controller is on Github. just click the green clone or do= wnload button to get code.
https://github.com/apmartin00/Plane

Software works well. I just need better filtering of = rpm pickup in hardware as it gets unstable at higher rpm. When controller i= s turned off reverts to manual pitch control so is quite safe to use.
Feel free to add comments or make code better.... or laugh at my a= ttempt at this.
Andrew




--
Regards Andrew Martin Martin Ag
--0000000000005fbbc90576279f62--