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SparkFun TMP102 Digital Temperature Sensor


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#1 rwinscot

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Posted 25 December 2010 - 09:43 AM

Here is a class that can be used to get the Netduino talking with the TMP102 breakout from SparkFun (<$6). http://www.sparkfun.com/products/9418 I imagine that this approach could be modified to use the I2CBus as well... mileage may vary. Before I forget - many thanks to all the other posters of I2C topics. Your knowledge and experience is very helpful! Cheers, Rick Winscot www.quilix.com Attached File  Example_TMP102.zip   81.53KB   355 downloads

#2 Valkyrie-MT

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Posted 25 December 2010 - 03:28 PM

Here is a class...


Where's the beef, er uh the code? This sensor uses an I2C bus on the Netduino?

Update: Are you referring to the code mentioned here?

-Valkyrie-MT

#3 rwinscot

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Posted 26 December 2010 - 04:22 AM

Where's the beef, er uh the code? This sensor uses an I2C bus on the Netduino?

Update: Are you referring to the code mentioned here?

-Valkyrie-MT


Sorry... link added to the first post.

R

#4 VincentA

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Posted 01 January 2011 - 09:47 AM

Hey rwinscot, I just got one of those. Your stuff works! thanks mate! Vincent

#5 Nevyn

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Posted 03 January 2011 - 04:29 PM

Here is a class that can be used to get the Netduino talking with the TMP102 breakout from SparkFun


Just been playing with this. Thanks for the code - saved me some time. Just a thought - wouldn't it be better if the GetTemperature method returned null if not enough data was returned rather than "0" ? Afterall, 0 degrees is within the operating range (if I've read the data sheet correctly).

Thanks again,
Mark

To be or not to be = 0xFF

 

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#6 omnomnomsies

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Posted 15 November 2011 - 09:32 PM

Here is a class that can be used to get the Netduino talking with the TMP102 breakout from SparkFun (<$6).

http://www.sparkfun.com/products/9418

I imagine that this approach could be modified to use the I2CBus as well... mileage may vary. Before I forget - many thanks to all the other posters of I2C topics. Your knowledge and experience is very helpful!

Cheers,

Rick Winscot
www.quilix.com

Attached File  Example_TMP102.zip   81.53KB   355 downloads


For anyone who stumbles on this as I did and wonders what happened to the precision of the temps you can get the decimals by reading the 2nd byte (buffer[1]) and then bit shifting it over 4 times (>> 4) - that gives you a value that you multiply by .0625 for the Celsius information after the decimal point.

It was also annoying to find that String.Format doesn't exist and that Math.Round doesn't work as expected either. I used ToString("") with a format specifier depending on how many places you want.

Hopefully that will save someone out there some time.

#7 Giuliano

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Posted 09 January 2012 - 06:36 PM

Just been playing with this. Thanks for the code - saved me some time. Just a thought - wouldn't it be better if the GetTemperature method returned null if not enough data was returned rather than "0" ? Afterall, 0 degrees is within the operating range (if I've read the data sheet correctly).

Thanks again,
Mark


I was doing some testing over the weekend and it returns 0 eventhough there is no sensor connected to the board. So what would it be a good way to control this?




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