[Butia-devel-list] FW: [IAEP] What Sensors and Where To Buy?

Vie Sep 21 03:32:59 UYT 2012

Hablando de termistores y eso..EstÃ¡n en esta lista de OLPC ?
Podemos decirles de nuestra experiencia con el LM35...
QuÃ© opinan?
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To: cbigenho en hotmail.com
From: forster en ozonline.com.au
Date: Fri, 21 Sep 2012 15:48:04 +1000
CC: iaep en lists.sugarlabs.org
Subject: Re: [IAEP] What Sensors and Where To Buy?

Hi
For the thermistor I used a TDC05C247 thermistor, Specifications:

    NTC (Negative Temperature Coefficient) Thermistor
    Operating temperature range: -20 Celsius ~ +125 Celsius
    Maximum power rating: 500mW
    Nominal resistance at 25 Celsius 4.7k ohms 
http://wiki.sugarlabs.org/go/Activities/TurtleArt/Using_Turtle_Art_Sensors#Measuring_Temperature

For the photocell I used a cadmium sulphide photocell that is 'similar to Philips ORP12'
http://wiki.sugarlabs.org/go/Activities/TurtleArt/Using_Turtle_Art_Sensors#Light_dependant_resistor_.28LDR.29

For the magnetic sensor I used (Allegro) UGN3503UA Hall Effect Sensor
http://wiki.sugarlabs.org/go/Activities/TurtleArt/Using_Turtle_Art_Sensors#Hall_Effect_Sensor

Tony

> OK, here I am again with another "dumb" questionï¿½ well, maybe not so dumb after all as I'll bet there are others out there who could also use this information. On the OLPC wiki there are several very nicely illustrated instructions about how to make sensors to use with the XOï¿½ temperature, humidity, light, etc.  But, they don't include a materials list or reference to sources where the parts can be purchased.
> http://wiki.laptop.org/go/Making_XO_sensors
> 
> 
> Radio Shack? Edmond Scientific? Parallax.com? or where? Curious people, myself included want to know. Can someone help here?
> 
> 
> Thanks!
> Caryl (GrannieB)
> 
> 
> P.S. Here's an example of the type of info needed. This site sells a number of light sensors but they call them things like Photoresistor, Photo Transistor, Light to Frequency Converter. These are all little ones that appear similar to the one in the instructions on the wiki. How do you tell which kind you need?
> http://www.parallax.com/Store/Sensors/ColorLight/tabid/175/List/0/CategoryID/50/Level/a/SortField/0/Default.aspx
>  		 	   		  <html>
> <head>
> </head>
> <body class='hmmessage'><div dir='ltr'>
> 
> 
> <style><!--
> .hmmessage P
> {
> margin:0px;
> padding:0px
> }
> body.hmmessage
> {
> font-size: 10pt;
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> }
> --></style>
> <div dir="ltr"><p style="font-size: 12px; "><font face="Verdana">Hiï¿½</font></p>
> <p style="font-size: 12px; min-height: 14px; "><font face="Verdana"><br></font></p>
> <p style="font-size: 12px; "><font face="Verdana">OK, here I am again with another "dumb" questionï¿½ well, maybe not so dumb after all as I'll bet there are others out there who could also use this information. On the OLPC wiki there are several very nicely illustrated instructions about how to make sensors to use with the XOï¿½ temperature, humidity, light, etc.  But, they don't include a materials list or reference to sources where the parts can be purchased.</font></p><p style="font-size: 12px; "><font face="Verdana"><br></font></p><p style="font-size: 12px; "><a href="http://wiki.laptop.org/go/Making_XO_sensors">http://wiki.laptop.org/go/Making_XO_sensors</a></p>
> <p style="font-size: 12px; min-height: 14px; "><font face="Verdana"><br></font></p>
> <p style="font-size: 12px; "><font face="Verdana">Radio Shack? Edmond Scientific? Parallax.com? or where? Curious people, myself included want to know. Can someone help here?</font></p>
> <p style="font-size: 12px; min-height: 14px; "><font face="Verdana"><br></font></p>
> <p style="font-size: 12px; "><font face="Verdana">Thanks!</font></p>
> <p style="font-size: 12px; "><font face="Verdana">Caryl (GrannieB)</font></p>
> <p style="font-size: 12px; min-height: 14px; "><font face="Verdana"><br></font></p>
> <p style="font-size: 12px; "><font face="Verdana">P.S. Here's an example of the type of info needed. This site sells a number of light sensors but they call them things like Photoresistor, Photo Transistor, Light to Frequency Converter. These are all little ones that appear similar to the one in the instructions on the wiki. How do you tell which kind you need?</font></p><p style="font-size: 12px; "><font face="Verdana"><br></font></p><p style="font-size: 12px; "><a href="http://www.parallax.com/Store/Sensors/ColorLight/tabid/175/List/0/CategoryID/50/Level/a/SortField/0/Default.aspx">http://www.parallax.com/Store/Sensors/ColorLight/tabid/175/List/0/CategoryID/50/Level/a/SortField/0/Default.aspx</a></p></div>
>  		 	   		  </div></body>
> </html>_______________________________________________
> IAEP -- It's An Education Project (not a laptop project!)
> IAEP en lists.sugarlabs.org
> http://lists.sugarlabs.org/listinfo/iaep

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