Bobby Light All American 2650 Posts user info edit post |
I'm working on an arduino project and ordered some LM34 temperature sensors and received these. These do not look like any LM34 temp sensors i've ever seen....what are these?
![](photos/00520257t.jpg)
Fuck. nvm. Google told me they're alcohol sensors. FML. Anyone need 3 of these? Or have a LM34 sensor you'd trade for or sell?
[Edited on April 17, 2011 at 5:08 PM. Reason : .] 4/17/2011 5:05:44 PM
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dweedle All American 77386 Posts user info edit post |
found this on google, searching for ""MQ-3US" part"
http://www.satistronics.com/alcohol-sensor-mq3_p2767.html
nevermind
[Edited on April 17, 2011 at 5:11 PM. Reason : ] 4/17/2011 5:11:00 PM
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Bobby Light All American 2650 Posts user info edit post |
Yeah, thanks. I found that about 1 minute after I posted. I swear I googled MQ-3US before I posted this thread ![](images/beatup.gif) 4/17/2011 5:18:45 PM
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EuroTitToss All American 4790 Posts user info edit post |
Fucking awesome. You can make a breathalyzer. 4/17/2011 6:14:11 PM
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Chance Suspended 4725 Posts user info edit post |
Any reason you didn't choose a DS18S20?
[Edited on April 17, 2011 at 7:17 PM. Reason : .] 4/17/2011 7:17:17 PM
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Quinn All American 16417 Posts user info edit post |
DS18S20 FTW 4/17/2011 7:57:38 PM
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Bobby Light All American 2650 Posts user info edit post |
well, i'm definitely a n00b. Seeing as how i'm going to have to reorder a temp sensor, is the DS18S20 better? 4/17/2011 8:10:46 PM
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Quinn All American 16417 Posts user info edit post |
everything has its application. what are you trying to do? 4/17/2011 8:13:20 PM
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Bobby Light All American 2650 Posts user info edit post |
Well, ultimately I hope for it to be a temperature sensor for my kegerator. I want it to monitor the temperature and send me an email/text if the temperature gets too high.
Is there a good/cheap waterproof sensor I could use? I'd really like to be able to submerge a sensor in some liquid to get an accurate liquid temp, but I'll accept air temp for now. 4/17/2011 8:18:24 PM
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Chance Suspended 4725 Posts user info edit post |
It's better because you can read it digitally and not fool with the ADC. I think whether you use the LM34 or anything else you need to waterproof it. You could try something from here
http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1211056457
and for interfacing to the DS18S20
http://www.arduino.cc/playground/Learning/OneWire
Or this
http://www.cheapvegetablegardener.com/2010/01/homemade-waterproof-digital-thermometer.html
[Edited on April 17, 2011 at 9:43 PM. Reason : .] 4/17/2011 9:40:58 PM
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Bobby Light All American 2650 Posts user info edit post |
Good resources. Thanks 4/17/2011 9:59:47 PM
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DonMega Save TWW 4191 Posts user info edit post |
Do you mind sharing some more details on your design?
I want to do something very similar using my arduino. I want to monitor a temperature in our plant and sent out an email (or some type of communication) when the temperature leaves a certain range.
I'd appreciate any help. 4/30/2011 10:25:38 AM
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Chance Suspended 4725 Posts user info edit post |
Either the sparkfun, adafruit, or arduino forums are going to be better resources for this.
Several ways you could do this...either with a zigbee/xbee wifi setup so your micro could directly email (assuming you have wifi available in the plant) or through something a little bit more (older)fi using a basic 433Mhz transciever at both ends with an app running on your PC polling either an RS232 or USB connection and sending the email this way.
I suppose you could also run some long wires and use a CAN bus since your data rates don't need to be fast...but who likes wires?
[Edited on April 30, 2011 at 11:05 AM. Reason : .] 4/30/2011 11:05:12 AM
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DonMega Save TWW 4191 Posts user info edit post |
Thanks, I appreciate the feedback. I'm out of the office this week, but aim to do the first pass design next week. 5/2/2011 2:20:49 PM
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