Category Archives: WeatherSignal

StormTag fully funded

Jan 2016 note: We no longer endorse StormTag. Regrettably, in the time since posting the below, Hex3 have become slower and slower in their followup. Over the past several months we have no update on the status of StormTag, to … Continue reading

Posted in Sensors, WeatherSignal | 1 Comment

A $20 Weather Station

Jan 2016 note: We no longer endorse StormTag. Regrettably, in the time since posting the below, Hex3 have become slower and slower in their responses. Over the past several months we have no update on the status of StormTag, to … Continue reading

Posted in Sensors, WeatherSignal | Leave a comment

Mobile: The Measure of All Things (Big Data Week talk)

These are the slides from a talk I gave at Big Data Week London 2014. We carry take our mobiles with us wherever we go, we keep them fuelled with energy and, typically, there’s no other object we own that … Continue reading

Posted in Sensors, Team, WeatherSignal | Leave a comment

Join the OpenSignal and WeatherSignal Beta

We’re making it easier for the OpenSignal/WeatherSignal Android community to access and test the latest features by introducing a Google Play Beta Program. By joining the Google+ beta communities and then opting-in to receive updates, you’ll get the latest development … Continue reading

Posted in App Update, Help Needed!, OpenSignalMaps Android App, Quantified Self, WeatherSignal | Leave a comment

Does the Galaxy S5 have temperature and humidity sensors?

tldr; No. The Galaxy S4 surprised the world by adding Sensirion’s SHTC1 chip – a tiny, low power chip that can take accurate measurements of relative humidity and ambient air temperature. These readings are used in S-Health, we also collect … Continue reading

Posted in Sensors, WeatherSignal | 7 Comments

Android Phones with Ambient Air Temperature Sensors

We recently published our findings on how outdoor air temperature can be extracted from readings of battery temperature, but we’re also excited by the growing number of phones with thermometers designed to directly measure the temperature outside the phone (rather … Continue reading

Posted in Sensors, WeatherSignal | Tagged , , , , , , | 3 Comments

Your smartphone battery measures the weather

This is the story of the most surprising thing we have yet discovered at OpenSignal. Eighteen months ago we began gathering data on battery performance from our Android app – the metrics available on Android include charge level, voltage and … Continue reading

Posted in Reports, Sensors, WeatherSignal | 3 Comments

The story of how temperature and humidity sensors made it into the Samsung Galaxy S4

When we first heard that the Galaxy S4 would include both humidity and temperature sensors we were pleasantly surprised. We’d heard about a chip that could take temperature and humidity readings at the trade show Mobile World Congress, but had … Continue reading

Posted in Sensors, WeatherSignal | 9 Comments

One Week of WeatherSignal

It’s been just over a week since we launched WeatherSignal, we billed it as “the most ambitious Weather crowdsourcing project ever” – that’s a fine claim to make, let’s see if we’re managing to live up to it. By the … Continue reading

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How to use WeatherSignal for Quantified Self tracking

While WeatherSignal is primarily designed to crowdsource Weather Readings you can also use it as a personal “tricorder” – for example to make highly localised maps of your surroundings, or even to monitor your own habits and interactions with the … Continue reading

Posted in Quantified Self, WeatherSignal | 4 Comments