How to measure environmental factors (temperature, light, humidity, ...) in a field located kilometers away from any electric socket and any Wifi network? The first solution coming to mind is to use an Android phone and to connect Yoctopuce sensors by USB. This solution works (as illustrated here), but to power this type of installation, you need to use a solar panel and a battery of a relatively large size. To perform some measures for a relatively short period of time (a few weeks), there is a simpler and probably cheaper alternative: using a Wifi connection between the phone and the sensor instead of a USB one.
Last week, we used the new version of the library to trace a dynamic graph in C# .NET. At that time, we saw that the new Datalogger API and the TimedReport made the work a lot easier. This week, we are going to develop a small Android application that also traces a graph from the datalogger and from current values. But we are going to see that things are a little more complex under Android ...
We have been recently asked whether we had a solution to communicate with our modules using SMS. We have a long term plan for a GSM version of our YoctoHub, but for now we focus on the YoctoHub-Wifi and other new modules. However, using an Android phone and with some programming, it is quite possible to communicate with a Yoctopuce module via SMS. A classic use is to remotely turn on and off the heating of your vacation home.
You have most probably already read about the Pebble smart watch, which connects to your phone to let you know about new emails, text messages, incoming calls, etc. A year after the original announcement, Pebble has eventually published the SDK to create an active “Watch App” for this watch. We thought it would be fun and convenient to be able to control our environment directly from a watch. So, to test this new SDK, we have written a small Pebble application that controls the light bulb that we used a couple of weeks ago with the Yocto-LatchedRelay.
We just found out by chance how to get rid of one of the main hindrance limiting the use of our modules with Android mobile phones: the unique USB port which also serves to connect the power supply. Given that the mobile phone must power connected modules, the phone battery capacity has been a problem so far. What's new is that the "Galaxy Note II Smart Dock" is now available. This dock allows us to realize applications which before required much more hardware. We are going to present a short compatibility example of this device and as well as of the possibilities it provides once combined with our modules.
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