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Mail Archives: geda-user/2014/01/23/20:50:06

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From: John Doty <jpd AT noqsi DOT com>
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Subject: Re: [geda-user] Best way to measure RPMs
Date: Thu, 23 Jan 2014 18:49:42 -0700
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On Jan 23, 2014, at 6:34 PM, Nathan Stewart wrote:

> The Cherry part I listed doesn't require an inductive bridge, just a =
pullup resistor. I think counting gear teeth is a good idea regardless =
of the sensing mechanism as it gives you free resolution.=20

At these speeds, you get the best resolution by measuring the rotation =
period and dividing one minute by it.=20

John Doty              Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com



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<html><head></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space; =
"><br><div><div>On Jan 23, 2014, at 6:34 PM, Nathan Stewart =
wrote:</div><br class=3D"Apple-interchange-newline"><blockquote =
type=3D"cite"><div dir=3D"ltr">The Cherry part I listed doesn't require =
an inductive bridge, just a pullup resistor. I think counting gear teeth =
is a good idea regardless of the sensing mechanism as it gives you free =
resolution. <br></div>
</blockquote><br></div><div>At these speeds, you get the best resolution =
by measuring the rotation period and dividing one minute by =
it.&nbsp;</div><br><div>
<span class=3D"Apple-style-span" style=3D"border-collapse: separate; =
border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-align: auto; =
-khtml-text-decorations-in-effect: none; text-indent: 0px; =
-apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
white-space: normal; widows: 2; word-spacing: 0px; "><span =
class=3D"Apple-style-span" style=3D"border-collapse: separate; =
border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-align: auto; =
-khtml-text-decorations-in-effect: none; text-indent: 0px; =
-apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
white-space: normal; widows: 2; word-spacing: 0px; "><p style=3D"margin: =
0.0px 0.0px 0.0px 0.0px"><font face=3D"Helvetica" size=3D"3" =
style=3D"font: 12.0px Helvetica">John Doty<span =
class=3D"Apple-converted-space">&nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span =
class=3D"Apple-converted-space">&nbsp;</span><span =
class=3D"Apple-converted-tab">&nbsp; &nbsp;<span =
class=3D"Apple-converted-space">&nbsp;</span></span></span>Noqsi =
Aerospace, Ltd.</font></p><p style=3D"margin: 0.0px 0.0px 0.0px =
0.0px"><a href=3D"http://www.noqsi.com/">http://www.noqsi.com/</a></p><p =
style=3D"margin: 0.0px 0.0px 0.0px 0.0px"><font face=3D"Helvetica" =
size=3D"3" style=3D"font: 12.0px Helvetica"><a =
href=3D"mailto:jpd AT noqsi DOT com">jpd AT noqsi DOT com</a></font></p><br =
class=3D"Apple-interchange-newline"></span></span>
</div>
<br></body></html>=

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