Author Archives: James

For more info on James check out our team page.

StormTag fully funded

After just two days on Kickstarter, StormTag is fully funded with over $19k committed from 507 backers. But there’s still time to pre-order the key-ring weather station from $20 and boost the sensors you can use with WeatherSignal . The … Continue reading

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A $20 Weather Station

At WeatherSignal we turn phones into weather stations. The WeatherSignal app takes readings of device sensors such as light, pressure, temperature and humidity from devices and uses these to create crowd-sourced weather maps. But there’s a problem, we’re limited to the … Continue reading

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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

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Help Needed: Mapping LTE Bandwidth

There are multiple factors that influence the data speed you experience: the device you use, the network operator, the time of day, the signal quality where you are. We’re building models of how these factors come together, we’ll be publishing … Continue reading

Posted in Help Needed!, Open Signal Maps community, Understanding signal | 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 | 5 Comments

The State of LTE – Q1 2014

Using data from LTE users of OpenSignal worldwide we’re happy to announce our most comprehensive study of LTE experience worldwide to date. It shows huge variation across two key metrics: download speed and the amount of time users have access … Continue reading

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“All units are ridiculous” – how to understand scale

I am occasionally and gratifyingly asked what I study – perhaps because I’ve never learnt to dress or shave properly despite having left university over 6 years ago. I say that I build apps to measure the world through mobile … Continue reading

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Android Permissions Misery

We recently noticed something pretty worrying when looking at our rating: After a year in which our averaged rating has climbed up almost every day, it has started to decline. Why? The app is working better than ever, with every … Continue reading

Posted in Android Development, App Update, FAQ | 4 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 , , , , , , | 2 Comments