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Comparison of IoT cellular data plans

By mvuilleu, in Reviews and Internet of Things, june 17,2016.

When you design an application for the Internet of Things based on cellular communications, the price of the communications can represent an important part of the total costs. As the market is expanding, there are new subscription packages dedicated to these applications, with varying conditions depending on the provider. Are all the offers equivalent? Is quality in direct relationship to the price? This is what came out of our first investigations...

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Using Yoctopuce sensors with InfluxDB and Grafana

By mvuilleu, in Reviews and Measures, december 05,2015.

Yoctopuce sensors are sold with programming libraries rather than with turnkey software for a specific use. Therefore, most of Yoctopuce users are developers. We do provide a few ready-to-use tools such as the command line interface, somewhat rustic, or the integration into third party solutions such as EmonCMS or Valarm. Today, we present a new solution of this type: an integration with InfluxDB and Grafana.

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Electromagnetic compatibility tests

By mvuilleu, in Reviews and Electronics, september 18,2015.

Those of you who have read our general terms and conditions know that Yoctopuce modules are not certified for any governmental compatibility standard (CE, FCC, and so on). As they are specialized components designed to be used in a larger system, and not end products for the general public, this is not strictly necessary to sell them in Switzerland. Nevertheless, we wanted to perform some measures to know where we stand with regard to these standards. So we visited a specialized laboratory with some of our modules ...

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Remote monitoring with the Valarm cloud

By mvuilleu, in Measures, Reviews and Internet of Things, july 31,2015.

There are more and more services enabling you to store your measures in the cloud. We already presented free (but limited) solutions such as EmonCMS and ThinkSpeak, and more recently the commercial solution Microsoft Azure. Today, we present the professional solution developed by our US reseller, Valarm.net, which is today the only one to exploit the advanced features of Yoctopuce modules and also offers features linked to geolocation that you don't find in other services.

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Viewing temperature flows

By mvuilleu, in Reviews and Measures, june 07,2015.

Summer is coming and, with it, heat waves that put a strain on the air conditioning of server rooms. How can we know if an air conditioner is of the right size or if it labors to cool the room and risks to fail at any time? How can we know if fresh air is distributed everywhere, or if the addition of a simple air circulator could save a few KWh?

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