X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.2 cv=O/h7h11W c=1 sm=1 tr=0 a=LTUozxgYEiL4qA9qR4bt1A==:117 a=x7bEGLp0ZPQA:10 a=xXDCcK6TKBsA:10 a=JBFolyDoGHsA:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=ZOGETzcKAAAA:8 a=eRLigfuSAAAA:8 a=NEAV23lmAAAA:8 a=fkHxcLGqt7Tq6GtokusA:9 a=Sv-p4SH_eLw3e3oL:21 a=mmueCi-IrWX5ZFP6:21 a=QEXdDO2ut3YA:10 a=Xu4R8xHkq3R2OtLAkJkA:9 a=VcFODDJlFELsZUMp:21 a=T76GxzUtHRgzsp0-:21 a=tKajYGp60Zn_U_Ye:21 a=Urk15JJjZg1Xo0ryW_k8:22 a=o_2oZySQXvBChP38Vmgs:22 a=BfhXYjFvZD4iae-mNffo:22 From: "Todd Bartrim bartrim@gmail.com" Received: from mail-ed1-f53.google.com ([209.85.208.53] verified) by logan.com (CommuniGate Pro SMTP 6.2.7) with ESMTPS id 11656114 for flyrotary@lancaironline.net; Tue, 18 Sep 2018 02:58:58 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.208.53; envelope-from=bartrim@gmail.com Received: by mail-ed1-f53.google.com with SMTP id h33-v6so969861edb.5 for ; Mon, 17 Sep 2018 23:59:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=9izAi+91NWCmWxbFer/BM6rI8+8j3LVqdNhD9/RB1ag=; b=m0+bHzEvGJnluMS21VUipmbFrDl6CGRwqctGAFlVLSAlzHDAEfzEG6Z1cbuntMAAg2 AFUdAJjR/HoN0hTElfp0LnZK0Rc8eMhw2zY/qMyvDabCm8IfWadRAjGxz0SzoEa+iqkR 3fxvIMCdz2fc9nUY1Foav2L5byKNA57Cq17WXe+lCnMH210p4UPnZYMVg9nZNts2Y7bb kCR/zWJRGdCvtZuk8fBh2dgUuimoy7rs2ZwZKztlWIOKU21UHMMQWTlkPttUGTn1SMUn +NTH4Nf3EwCBoRKRPxUsCtH0j8pczgwLdxvk4VpRwNTlPItBS1Zo2D6HrDhqn8MFVMUI wZdw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to; bh=9izAi+91NWCmWxbFer/BM6rI8+8j3LVqdNhD9/RB1ag=; b=Km9Trd/F5Pcr6RQsQiTSjXjdOudgxuMtlL5xPrjz9hMy61lkioi5l+dL7czHCpVXkz VykMtuZX9rPYcLmD8kwTVefF2C9fCO7ZzJpFT9hR2t1nk/SBQUUsCdL1HRpqOXRbsfdq CFNQ8i0MqlbsiJIeVUH7R+Q66gW7M77VlgbDNycsQCgKJCRERQOiVAeXMJhJCjKTBcBJ 1dRpqH3hkGGactc9nysf7fDv36gXADJJsKrlpL+mWEbrSIsUChR/6pJLK11Q4xNz1Ifx sxSJmvPYygbWt3cHUFbhqNaLJGK1DzJQMjSj8MtYyNn2nbbb/AIz31iPAf/Jm/ZxoEkv q1eQ== X-Gm-Message-State: APzg51C+MBIkmzl1GD2r/Z0D2BplM02E4q5wnoWmXSKE/liwjyImL9VV nDXwYHjxjOka0MTrPbVemafbgK7pQKzGFBiuXTCwHNM= X-Google-Smtp-Source: ANB0VdZ/7zucyrq4zaJ1eSuyr31AyUdRpIPgj9MWAmJ5oH2fGR5PZ9jtVbVJKZIrTjmUum8meCSSXNiTDltnFOp9Y0c= X-Received: by 2002:a50:8046:: with SMTP id 64-v6mr26681507eda.227.1537253921221; Mon, 17 Sep 2018 23:58:41 -0700 (PDT) MIME-Version: 1.0 Received: by 2002:a50:a5fd:0:0:0:0:0 with HTTP; Mon, 17 Sep 2018 23:58:40 -0700 (PDT) In-Reply-To: References: Date: Mon, 17 Sep 2018 23:58:40 -0700 Message-ID: Subject: Re: [FlyRotary] Re: Arduino To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="000000000000e7703b05761fd1b0" --000000000000e7703b05761fd1b0 Content-Type: text/plain; charset="UTF-8" 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 > > > > --000000000000e7703b05761fd1b0 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hey Andrew;=C2=A0
= =C2=A0 =C2=A0I assume you are the chief pilot and flight engineer for=C2=A0= Ruffasgutsair? I don't know enough at this point to make any critical j= udgment 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.
=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 got to fin= ish understanding the Loguino code and tweak it to suit my needs.
=C2=A0 The next project I've got in mind is an automatic yaw damper. P= reviously my plane flew with very little required rudder in almost all phas= es 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, bu= t 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 n= ew tailwheel position are being pushed by the corkscrew slipstream.
=C2=A0 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 t= hought "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
<= br>

To= dd Bartrim

On Mon, Sep 17, 2018 at 7:05 PM, Matt Boitea= u mattboiteau@gmail.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/

<= div class=3D"m_1178950848603104793mb_sig">- 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 electric constant speed controller is on Github. = just click the green clone or download button to get code.

Software works w= ell. I just need better filtering of rpm pickup in hardware as it gets unst= able at higher rpm. When controller is turned off reverts to manual pitch c= ontrol so is quite safe to use.
Feel free to add comments or = make code better.... or laugh at my attempt at this.
Andrew




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