In the past weeks, we wrote many theoretical posts on serious topics, so this week, we wrote something more entertaining. We modified a barbecue to monitor the cooking of a spit roast. We also took this opportunity to use our new module: the YoctoHub-GSM-2G.
We noticed that the topics of our latest posts were step by step getting more and more specialized. To avoid scaring new users away, we thought that it was time to go back to the basics and to gather in a few post the basic principles underlying the use of our modules. So, here is the first post of the series, which could have been namedYoctopuce for Dummies if it did not infringe on a well defended trademark.
Nowadays, when the media write about the Internet of Things, nobody worries about transfer speed issues. We assume that networks are fast enough to consign this issue to the past. But is it really the case? Not so sure...
There is a data logger in almost all of our sensors. This data logger can automatically record values measured by the sensor. The advantage is that it continues to record data even network connectivity is lost or when the application stops. When the application takes control again, it is possible to get back the measures performed during the interval. But up till now, it was unfortunately impossible to retrieve data logger measure using the HTTP callback mode. Thanks to the new WebSocket callback mode, you can now use the data logger over an Internet link without limits. This week, we are writing a Java web application which illustrates this feature.
How many times did you just get back from grocery shopping when you noticed that you forgot to buy an essential item, such as coffee or worse... sugar? Obviously, a pencil and a paper should theoretically protect you against this kind of mishap. But you must still not lose or forget the shopping list before you go shopping. This week, we propose a solution based on Yoctopuce modules to solve this annoying issue.
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