From: "Todd Bartrim bartrim@gmail.com" <flyrotary@lancaironline.net>
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Date: Tue, 18 Sep 2018 00:05:30 -0700
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Subject: Re: [FlyRotary] ECU - Megasquirt geared towards planes
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Matt;
  This is quite impressive. Please keep the list updated as this proceeds.

Todd

Todd Bartrim

On Mon, Sep 17, 2018 at 8:56 PM, Matt Boiteau mattboiteau@gmail.com <
flyrotary@lancaironline.net> wrote:

> Over the years of building my plane (still ongoing), I=E2=80=99ve been de=
signing a
> megasquirt ECU board geared towards us in aviation. I only did this as a
> hobby, but a few people have inquired about it going forwards.
> For all intents and purpose, it=E2=80=99s still a factory built Megasquir=
t board
> with all the standard bells and whistles. Which is a lot btw! But I=E2=80=
=99ve
> expanded the base it plugs into, to allow for greater possibilities and
> improvements.
>
> -2x power inputs, like most EFIS=E2=80=99s have. Main and backup always o=
n
> -Controls main fuel pump, and backup fuel pump when fuel pressure drops
> -Baro pressure sensor (changing in altitude will self adjust fuel)
> -2x MAP pressure sensors (only 1 drives the calculations, the other is
> just nice to know what the other rotor is doing)
> -Check engine & battery light
> -Switch between fuel tables (mogas vs 100ll)
> -Controls two servo motors. I=E2=80=99m thinking of having louvers outlet=
s for oil
> and coolant that can open and close to regulate temperature.
> -CAN bus out, for future interfaces
> -4x EGTs
> -8x temperate inputs (ex, Manifold, intake, oil pan, oil cooler, coolant
> in, coolant out, fuel rail, psru)
> -Flex fuel sensor that gives you ethanol % (along with another fuel temp)
> -2x knock sensors
> -Coolant, Fuel and Oil pressures
> -Controls RX8 alternator (PWM style, no regulators to mess with)
> -Push button start / stop engine (Can even remotely start engine, for
> those cold mornings! Jk! (but not really))
> -Wideband sensor for tuning
> -4x Low/High sensors (ex, low coolant, oil, fuel)
> -Serial out to interface data to display on GRT EFIS. I don=E2=80=99t kno=
w if
> Dynon / MGL are open source like GRT is. I=E2=80=99m willing to try if pe=
ople send
> me their EFIS to test with.
> -Bluetooth to interface with tablet / laptop to tune the engine
>
> I=E2=80=99m missing a bunch of things, but this is just off the top of my=
 head.
> Realistically, I have the hardware built and I=E2=80=99ve run my RX8 engi=
ne a bunch
> of times on the ground. Plane won=E2=80=99t be flying until spring time (=
I hope),
> so there is a ton of bugs to work out. Plus, I=E2=80=99d want to fly with=
 it for
> awhile, before I=E2=80=99d even dare to let someone else.
>
> The two biggest questions I get is, why is there only 1 ECU and where is
> my fuel mixture knob. With the right protection of circuits and power
> supplies, barely rarely does the actual ECU fail. I=E2=80=99m confident w=
ith just
> 1. And I still haven=E2=80=99t been convinced of a mixture knob. Let the =
ECU talk
> with the wideband & baro and do the work for you.
>
> Here's a video of it running.
> https://www.youtube.com/watch?v=3DfwfdAUZXF9o
>
>
> - Matt Boiteau
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net:
> 81/lists/flyrotary/List.html
>
>

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<div dir=3D"ltr">Matt;<div>=C2=A0 This is quite impressive. Please keep the=
 list updated as this proceeds.</div><div><br></div><div>Todd</div></div><d=
iv class=3D"gmail_extra"><br clear=3D"all"><div><div class=3D"gmail_signatu=
re" data-smartmail=3D"gmail_signature"><div dir=3D"ltr">Todd Bartrim</div><=
/div></div>
<br><div class=3D"gmail_quote">On Mon, Sep 17, 2018 at 8:56 PM, Matt Boitea=
u <a href=3D"mailto:mattboiteau@gmail.com">mattboiteau@gmail.com</a> <span =
dir=3D"ltr">&lt;<a href=3D"mailto:flyrotary@lancaironline.net" target=3D"_b=
lank">flyrotary@lancaironline.net</a>&gt;</span> wrote:<br><blockquote clas=
s=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;pad=
ding-left:1ex"><div id=3D"m_2963562117158300841__MailbirdStyleContent" styl=
e=3D"font-size:10pt;font-family:Arial;color:#000000"><span style=3D"font-si=
ze:10pt">Over the years of building my plane (still ongoing), I=E2=80=99ve =
been designing a megasquirt ECU board geared towards us in aviation. I only=
 did this as a hobby, but a few people have inquired about it going forward=
s.<br>For all intents and purpose, it=E2=80=99s still a factory built Megas=
quirt board with all the standard bells and whistles. Which is a lot btw! B=
ut I=E2=80=99ve expanded the base it plugs into, to allow for greater possi=
bilities and improvements.<br><br>-2x power inputs, like most EFIS=E2=80=99=
s have. Main and backup always on<br>-Controls main fuel pump, and backup f=
uel pump when fuel pressure drops<br>-Baro pressure sensor (changing in alt=
itude will self adjust fuel)<br>-2x MAP pressure sensors (only 1 drives the=
 calculations, the other is just nice to know what the other rotor is doing=
)<br>-Check engine &amp; battery light<br>-Switch between fuel tables (moga=
s vs 100ll)<br>-Controls two servo motors. I=E2=80=99m thinking of having l=
ouvers outlets for oil and coolant that can open and close to regulate temp=
erature.<br>-CAN bus out, for future interfaces<br>-4x EGTs=C2=A0<br>-8x te=
mperate inputs (ex, Manifold, intake, oil pan, oil cooler, coolant in, cool=
ant out, fuel rail, psru)<br>-Flex fuel sensor that gives you ethanol % (al=
ong with another fuel temp)<br>-2x knock sensors<br>-Coolant, Fuel and Oil =
pressures<br>-Controls RX8 alternator (PWM style, no regulators to mess wit=
h)<br>-Push button start / stop engine (Can even remotely start engine, for=
 those cold mornings! Jk! (but not really))<br>-Wideband sensor for tuning<=
br>-4x Low/High sensors (ex, low coolant, oil, fuel)<br>-Serial out to inte=
rface data to display on GRT EFIS. I don=E2=80=99t know if Dynon / MGL are =
open source like GRT is. I=E2=80=99m willing to try if people send me their=
 EFIS to test with.<br>-Bluetooth to interface with tablet / laptop to tune=
 the engine<br><br>I=E2=80=99m missing a bunch of things, but this is just =
off the top of my head. Realistically, I have the hardware built and I=E2=
=80=99ve run my RX8 engine a bunch of times on the ground. Plane won=E2=80=
=99t be flying until spring time (I hope), so there is a ton of bugs to wor=
k out. Plus, I=E2=80=99d want to fly with it for awhile, before I=E2=80=99d=
 even dare to let someone else.<br><br>The two biggest questions I get is, =
why is there only 1 ECU and where is my fuel mixture knob. With the right p=
rotection of circuits and power supplies, barely rarely does the actual ECU=
 fail. I=E2=80=99m confident with just 1. And I still haven=E2=80=99t been =
convinced of a mixture knob. Let the ECU talk with the wideband &amp; baro =
and do the work for you.<br></span><div style=3D"font-size:13.3333px"><br><=
/div><div style=3D"font-size:13.3333px">Here&#39;s a video of it running.</=
div><div style=3D"font-size:13.3333px"><a href=3D"https://www.youtube.com/w=
atch?v=3DfwfdAUZXF9o" title=3D"Click to open in a new window or tab
https://www.youtube.com/watch?v=3DfwfdAUZXF9o" style=3D"color:blue" target=
=3D"_blank">https://www.youtube.com/watch?<wbr>v=3DfwfdAUZXF9o</a></div><sp=
an class=3D"HOEnZb"><font color=3D"#888888"><div style=3D"font-size:13.3333=
px"><br></div><div class=3D"m_2963562117158300841mb_sig" style=3D"font-size=
:13.3333px"><br></div><div class=3D"m_2963562117158300841mb_sig">- Matt Boi=
teau</div></font></span></div><br>--<br>
Homepage:=C2=A0 <a href=3D"http://www.flyrotary.com/" rel=3D"noreferrer" ta=
rget=3D"_blank">http://www.flyrotary.com/</a><br>
Archive and UnSub:=C2=A0 =C2=A0<a href=3D"http://mail.lancaironline.net:81/=
lists/flyrotary/List.html" rel=3D"noreferrer" target=3D"_blank">http://mail=
.lancaironline.net:<wbr>81/lists/flyrotary/List.html</a><br>
<br></blockquote></div><br></div>

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