Standalone USB temperature logger

[Jean] wrote in eager to share his latest project, a standalone temperature logger with USB connectivity. Back in November, [Jean] found himself wanting a temperature logger that was roughly the size of a USB memory stick. What he found on the market was not quite adequate in terms of price or size, so he decided to design his own. His would be the size he wanted and wouldn’t require any software or drivers to run. You simply plug it in, edit the configuration text file to set your intervals, and off you go!

You can follow along through the entire design and fabrication on his site. He’s really great about discussing why he made each decision and how he resolved any errors he ran into. You can download the schematics and source code on his site.

Comments

  1. Nice design, great looking PCB! :)

  2. load.nikon says:

    make it wireless and I’m sold

  3. Drake says:

    I can see the way he handles the filesystem being used in many other applications. For example write a bootloader that reads the program from the storage, or even interpreted code, each time it reboots. Combined with some motors, wheels, small CD cells etc you have an easily programmed robot.

    Hell lets start a kickstarter for this right now

  4. Dave M says:

    Not quite as capable, but I have found these to be adequate for many purposes: http://www.maxim-ic.com/datasheet/index.mvp/id/4023

    • Drone says:

      Those Dallas DS1921G Thermochron buttons are like $25 USD each in unit quantity. Then the little iButton cases for them (P/N DS9107) are around $33 bucks each! Man, I knew Maxim was expensive, but that’s nuts.

      • effgee says:

        Great project, very impessive, I don’t want to take anything away from this

        I’ve used the Dallas thermochrons many times, without a failure. They’re tiny, in a robust stainless can, and zero labour, and can be bought from $22 for 1-off

        How many hours would it take to build and program one of these, and house it in a case ? By that time the Dallas option will be cheaper for sure.

        But once again, awesome project and well done to Jean

  5. Dr. James says:

    All I can say is, “WOW!” Nice job, Jean.

  6. Brad says:

    Awesome, I often wish I had something like this in my greenhouses.

  7. Galane says:

    I have four Escort MI-ST-D-2-L temp loggers free plus shipping cost. Batteries included. Send me an e-mail to g_alan_e at yahoo dot com if you want them.

    Three have been used, one has not. I haven’t found a way to reset them. If they can’t be hacked, the cases would be useful. Very rugged with a built in barrery holder, hanging loop and female DE9 port on the back. Software for them is free from Escort.

  8. GHREEP obaid says:

    I have four Escort MI-ST-D-2-L temp loggers and want to reset them , i dont know how reset just know that there are ic 24lc16b for software if someone help me

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