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Wireless temperature sensor? — Parallax Forums

Wireless temperature sensor?

CrosswindsCrosswinds Posts: 182
edited 2013-03-20 16:17 in Propeller 1
Hello!

Im looking for a wireless temperature sensor to interface with my project.

Anyone got some info of one that could be used?

Tries searching for info on decoding oregon scientific, but theres no info for the prop..


Thanks!

Comments

  • StephenMooreStephenMoore Posts: 188
    edited 2013-03-19 19:13
    How about a prop, an Xbee and a DS18B20 one wire temp sensor?

    Or, if the sensor to controller range is sufficiently short you could go with low cost IR transmit-receive instead of the 2.4GHz RF unit..

    If you need a large temp range you would have to go with a TC and something like the DS2760 which Parallax used to carry.

    Objects for all of these things to work with the Prop are available.

    Regards,

    sm
  • Duane DegnDuane Degn Posts: 10,588
    edited 2013-03-19 20:38
    StephenMoore wrote: »
    you could go with low cost IR transmit-receive instead of the 2.4GHz RF unit..

    There are also low cost 2.4GHz options.
  • StephenMooreStephenMoore Posts: 188
    edited 2013-03-19 21:08
    Very interesting.

    Have you run one of those low cost units?
  • Duane DegnDuane Degn Posts: 10,588
    edited 2013-03-19 21:58
    StephenMoore wrote: »
    Have you run one of those low cost units?

    Many times.

    Here's a driver that works but it isn't as fast as it could be. I have a faster driver written (most of it in PASM) but I need to remove some proprietary parts before releasing it.

    I was able to use a simple message hopping technique in this project. By using message hopping the effective range on the transmitters was increased.

    Even without message hopping I had a hard time finding two locations in our home that two transceivers couldn't communicate with each other. It was only when a major appliance (frig, oven, hot water heater) came between the two transceivers did the signal get completely blocked.

    You can sure buy a lot of these little Nordic transceivers for the price of a pair of XBees. They do require more I/O pins though.
  • JLockeJLocke Posts: 354
    edited 2013-03-20 06:44
    My Temperature/Humidity logger uses XBee's for wireless transmission. The outside unit is battery-powered and uses a Sensirion SHT11 temperature/humidity sensor. The downstairs unit uses a DS18B20. I recently posted my project to the forum... http://forums.parallax.com/showthread.php/146492-ThermoProp-A-3-Station-Temperature-Humidity-Data-Logger.

    I've posted the schematics, code, and XBee profiles for each of the three units.
  • CrosswindsCrosswinds Posts: 182
    edited 2013-03-20 16:17
    Hello!

    Thank you very much for your answers!


    I think i will go with StephenMoore's idea! Seems like the way to guy. Will be a fun build!



    StephenMoore wrote: »
    How about a prop, an Xbee and a DS18B20 one wire temp sensor?

    Or, if the sensor to controller range is sufficiently short you could go with low cost IR transmit-receive instead of the 2.4GHz RF unit..

    If you need a large temp range you would have to go with a TC and something like the DS2760 which Parallax used to carry.

    Objects for all of these things to work with the Prop are available.

    Regards,

    sm
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