Review - Theromodo: temperature sensor for your phone

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Thermodo Thermodo copyright by Thermodo


We are very happy for the existence of Kickstarter and similar crowdfunding platforms. Mainly because there we find out about the stuff that we didn't even know we wanted/needed as backpackers. Thermodo is one of those things.


Yes, smartphones have their apps to show you weather conditions from every corner of the world, but often you just want to know what the temperature is in your house or on your balcony. And Thermodo solves this problem and need in a very simple, yet technically sophisticated way.


Let's take a look at the simplicity of the solution. Once you open the minimalistic package (which is also a tribute for 8.887 Kickstarter backers who made the project possible), you are presented with a simple, glossy, keychain-like device. By opening it you see a headphone jack under the black cap. That cap is the temperature sensor. And that’s about it.

Thermodo PackagingThermodo Kickstarter tributeThermodoThermodoThermodo Cap Logo


How does it work?
It is a bit too complicated for us to describe the actual way how things work, so we will use Thermodo's team explanation: "Thermodo consists of a passive temperature sensor built into a 4 pole audio jack enclosed by a sturdy housing. Thermodo sends an audio signal through the temperature sensor. This sensor will then attenuate the signal amplitude depending on the actual temperature. This attenuation can now be detected on the microphone input and through software we calculate the corresponding temperature." Simply complicated, right?


Let's talk about the software
Apps for both most important mobile platforms are free and you can find the links at the end of the article.
Once we started it, the app asked us to plug in the sensor. Immediately after that, it started measuring the temperature providing us with "statistical" data at the bottom of the screen (minimum, maximum and average temp). The actual temperature is visible at the center of the screen. By sliding our finger downward, we were presented with the icon for basic configuration where we could set up a measurement unit, device heat compensation and indicator arrows.

Thermodo App ScreenshotThermodo App ScreenshotThermodo App ScreenshotThermodo App ScreenshotThermodo App Screenshot

Getting the accurate numbers
Heat compensation setting is somewhat important. Every device produces its own heat signature which can affect the reading of the sensor. Lucky for us, the Thermodo team is constantly working on the device database to make that compensation as good as possible. We noticed significant variations of measurement within the first few minutes of plugging the device in, but after that it settled on a value which was always +-1 degree from our reference digital thermometer. That's very nice.

Since it is a very sensitive sensor, the manufacturer recommends a few things: not to get too close with our hands while measuring, leave it be a few minutes before using and, if possible, use an extension cable. That cable is not provided but it is possible to use any 4-pole cable available. And it works. We borrowed some illustrations from Thermodo website.

4-Pole connectorsThermodo extension cord usage


Truth be told, this is a gadget with limited usage and depends on user’s needs. But given the number of Kickstarter backers, the need really exists. You can plug it into the extension cable and hang it on the outside of your backpack, stick it out the window of your hotel room to know what to wear outside. Heck, you can probably use it to take your own temperature if you feel feverish. And the best thing is, it is small enough to carry with you all the time. You will forget you have it until you need it.

If you think that this is the gadget for you, visit the manufacturers website and order one. For a few $ more, there is even a Premium version available, made from anodized aluminum with a electrode erosion engraved Thermodo and Robocat logo. Groovy...
Thermodo Premium
Also, here are the App links. Now, let's go see how hot it is outside at this exact moment.

Available on Google Play   Available on iTunes

Last modified on Sunday, 25 May 2014 13:24

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