<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Rodney, </div><div class=""><br class=""></div><div class="">Glad you mentioned the short range, was about to buy one! Looks like I will need to use the good old fashioned ultrasonic sensor unless someone knows of a version with a 3m range.</div><div class=""><br class=""></div><div class="">I am interested in one that can be used outdoors and will be able to ignore noise. I have used the cheap HC-105 but they are too unreliable. The Maxbotix sensors are much better but 5x the price. The <a href="http://www.amazon.com/Maxbotix-MB7060-XL-MaxSonar-WR1/dp/B00A7YH6M4/ref=sr_1_1?s=industrial&ie=UTF8&qid=1423859198&sr=1-1&keywords=outdoor+ultrasonic" class="">outdoor version</a> is more expensive sill at $100. </div><div class=""><br class=""></div><div class="">Any other ideas for an outdoor distance sensor that would be reliable and resistant to noise?</div><div class=""><br class=""></div><br class=""><div class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Charles McClelland</div><div class=""><a href="mailto:chip@mcclellands.org" class="">chip@mcclellands.org</a></div><div class="">919-624-5562</div><div class=""><br class=""></div></div><br class="Apple-interchange-newline"></div><br class="Apple-interchange-newline"><br class="Apple-interchange-newline">
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<br class=""><div><blockquote type="cite" class=""><div class="">On Feb 13, 2015, at 1:36 PM, <a href="mailto:triembed-request@triembed.org" class="">triembed-request@triembed.org</a> wrote:</div><br class="Apple-interchange-newline"><div class="">Send TriEmbed mailing list submissions to<br class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="mailto:triembed@triembed.org" class="">triembed@triembed.org</a><br class=""><br class="">To subscribe or unsubscribe via the World Wide Web, visit<br class=""><span class="Apple-tab-span" style="white-space:pre"> </span>http://mail.triembed.org/mailman/listinfo/triembed_triembed.org<br class="">or, via email, send a message with subject or body 'help' to<br class=""><span class="Apple-tab-span" style="white-space:pre"> </span>triembed-request@triembed.org<br class=""><br class="">You can reach the person managing the list at<br class=""><span class="Apple-tab-span" style="white-space:pre"> </span>triembed-owner@triembed.org<br class=""><br class="">When replying, please edit your Subject line so it is more specific<br class="">than "Re: Contents of TriEmbed digest..."<br class=""><br class=""><br class="">Today's Topics:<br class=""><br class=""> 1. Re: [TAR] New TOF (time of flight) distance sensor from<br class=""> Sparkfun (Randy Farmer)<br class=""> 2. Re: [TAR] New TOF (time of flight) distance sensor from<br class=""> Sparkfun (Rodney Radford)<br class=""><br class=""><br class="">----------------------------------------------------------------------<br class=""><br class="">Message: 1<br class="">Date: Fri, 13 Feb 2015 13:21:19 -0500<br class="">From: Randy Farmer <randy.farmer@gmail.com><br class="">To: trianglerobotics@yahoogroups.com<br class="">Cc: TriEmbed Discussion <triembed@triembed.org><br class="">Subject: Re: [TriEmbed] [TAR] New TOF (time of flight) distance sensor<br class=""><span class="Apple-tab-span" style="white-space:pre"> </span>from<span class="Apple-tab-span" style="white-space:pre"> </span>Sparkfun<br class="">Message-ID:<br class=""><span class="Apple-tab-span" style="white-space:pre"> </span><CAFKBHwNp240BVWLAbr1vArmSKeCa7T84gy=iUSYFjkAqN+dOCA@mail.gmail.com><br class="">Content-Type: text/plain; charset="utf-8"<br class=""><br class="">Cheaper breakout with just the sensor:<br class=""><br class="">https://www.sparkfun.com/products/12784<br class=""><br class=""><br class="">On Fri, Feb 13, 2015 at 1:14 PM, Rodney Radford ncgadgetry@gmail.com<br class="">[trianglerobotics] <trianglerobotics@yahoogroups.com> wrote:<br class=""><br class=""><blockquote type="cite" class=""><br class=""><br class="">If you are on the Sparkfun mail list, you probably already got this, but<br class="">this guy is interesting enough to warrant an announcement just in case.<br class=""><br class="">https://www.sparkfun.com/products/12785<br class=""><br class="">It is a $24.95 TOF (time of flight) distance sensor - this means that it<br class="">actually measures the amount of time to send light (IR) to and from the<br class="">object, so it is immune from surface reflectivity issues, and also immune<br class="">from many of the problems with ultrasonic sensors.<br class=""><br class="">The only drawback that I see is the relatively short range - 0.5 meters is<br class="">listed in the spec sheet, but if you look at the app note they are<br class="">measuring distance out to almost 2 meters. The actual distance is<br class="">dependent upon ambient light and surface reflection. Note that while the<br class="">maximum dept allowed is dependent upon surface reflection, the actual value<br class="">of the measurement does not.<br class=""><br class="">I will be ordering one of these soon (too bad I did not know about it<br class="">before placing two orders to them just last week).<br class=""><br class="">Take a look at both the datasheet and the appnote.<br class=""><br class=""><br class=""> __._,_.___<br class=""> ------------------------------<br class="">Posted by: Rodney Radford <ncgadgetry@gmail.com><br class="">------------------------------<br class=""> Reply via web post<br class=""><https://groups.yahoo.com/neo/groups/trianglerobotics/conversations/messages/5062;_ylc=X3oDMTJwMTFrMzJpBF9TAzk3MzU5NzE0BGdycElkAzM3NTYxODEEZ3Jwc3BJZAMxNzA1MTM3MDc4BG1zZ0lkAzUwNjIEc2VjA2Z0cgRzbGsDcnBseQRzdGltZQMxNDIzODUxMjg3?act=reply&messageNum=5062><br class="">? 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Terms<br class="">of Use <https://info.yahoo.com/legal/us/yahoo/utos/terms/><br class=""><br class=""> .<br class=""><br class=""> __,_._,___<br class=""><br class=""></blockquote>-------------- next part --------------<br class="">An HTML attachment was scrubbed...<br class="">URL: <http://mail.triembed.org/pipermail/triembed_triembed.org/attachments/20150213/bbaa7928/attachment-0001.html><br class=""><br class="">------------------------------<br class=""><br class="">Message: 2<br class="">Date: Fri, 13 Feb 2015 13:36:12 -0500<br class="">From: Rodney Radford <ncgadgetry@gmail.com><br class="">To: trianglerobotics <trianglerobotics@yahoogroups.com><br class="">Cc: TriEmbed Discussion <triembed@triembed.org><br class="">Subject: Re: [TriEmbed] [TAR] New TOF (time of flight) distance sensor<br class=""><span class="Apple-tab-span" style="white-space:pre"> </span>from<span class="Apple-tab-span" style="white-space:pre"> </span>Sparkfun<br class="">Message-ID:<br class=""><span class="Apple-tab-span" style="white-space:pre"> </span><CA+kfaxGLmRAXTDRA200NyiuoV5hDLinY2J_Ng=M5N-q9TNZAew@mail.gmail.com><br class="">Content-Type: text/plain; charset="utf-8"<br class=""><br class="">Yet an additional followup - while reading the comments on the bare sensor,<br class="">someone mentioned the ST eval board and it is $19.95 and includes an<br class="">arm-cortex-4 processor and USB interface:<br class=""><br class="">http://www.mouser.com/ProductDetail/STMicroelectronics/EVALKIT-VL6180X/?qs=sGAEpiMZZMvfpQN6QVmrfGjb%252b49cDybCa83Lgq8kEXU%3d<br class=""><br class=""><br class="">On Fri, Feb 13, 2015 at 1:21 PM, Randy Farmer randy.farmer@gmail.com<br class="">[trianglerobotics] <trianglerobotics@yahoogroups.com> wrote:<br class=""><br class=""><blockquote type="cite" class=""><br class=""><br class="">Cheaper breakout with just the sensor:<br class=""><br class="">https://www.sparkfun.com/products/12784<br class=""><br class=""><br class="">On Fri, Feb 13, 2015 at 1:14 PM, Rodney Radford ncgadgetry@gmail.com<br class="">[trianglerobotics] <trianglerobotics@yahoogroups.com> wrote:<br class=""><br class=""><blockquote type="cite" class=""><br class=""><br class="">If you are on the Sparkfun mail list, you probably already got this, but<br class="">this guy is interesting enough to warrant an announcement just in case.<br class=""><br class="">https://www.sparkfun.com/products/12785<br class=""><br class="">It is a $24.95 TOF (time of flight) distance sensor - this means that it<br class="">actually measures the amount of time to send light (IR) to and from the<br class="">object, so it is immune from surface reflectivity issues, and also immune<br class="">from many of the problems with ultrasonic sensors.<br class=""><br class="">The only drawback that I see is the relatively short range - 0.5 meters<br class="">is listed in the spec sheet, but if you look at the app note they are<br class="">measuring distance out to almost 2 meters. The actual distance is<br class="">dependent upon ambient light and surface reflection. Note that while the<br class="">maximum dept allowed is dependent upon surface reflection, the actual value<br class="">of the measurement does not.<br class=""><br class="">I will be ordering one of these soon (too bad I did not know about it<br class="">before placing two orders to them just last week).<br class=""><br class="">Take a look at both the datasheet and the appnote.<br class=""><br class=""><br class=""><br class=""></blockquote> __._,_.___<br class=""> ------------------------------<br class="">Posted by: Randy Farmer <randy.farmer@gmail.com><br class="">------------------------------<br class=""> Reply via web post<br class=""><https://groups.yahoo.com/neo/groups/trianglerobotics/conversations/messages/5063;_ylc=X3oDMTJwMDg0a3V0BF9TAzk3MzU5NzE0BGdycElkAzM3NTYxODEEZ3Jwc3BJZAMxNzA1MTM3MDc4BG1zZ0lkAzUwNjMEc2VjA2Z0cgRzbGsDcnBseQRzdGltZQMxNDIzODUxNjgx?act=reply&messageNum=5063><br class="">? 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