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" question� 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 XO� 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;
> font-family:Tahoma
> }
> --></style>
> <div dir="ltr"><p style="font-size: 12px; "><font
> face="Verdana">Hi�</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" question� 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 XO� 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@lists.sugarlabs.org
> http://lists.sugarlabs.org/listinfo/iaep
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