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Logging and retrieving measures without network access

By mvuilleu, in Tiny PC and Measures, december 02,2016.

Even in the Internet of Things era, there are automation and measuring applications that require to work in a completely autonomous way, without any network connection of any kind. Someone asked us recently how to implement such an autonomous data logger using our sensors. The system should not require any network connection but use a USB key to retrieve the data. We are going to cover this example in details and at the same time take this opportunity to test a relatively new mini-computer that we recently discovered...

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How many USB devices can you connect ?

By mvuilleu, in Reviews and Tiny PC, august 01,2016.

The USB specification plans for 127 device adresses on the USB bus, and it is tempting to deduce from this that you can connect up to 127 devices on a USB port. Bad luck, life is not as simple: this naive reasoning does not take into account all constraints imposed by USB controllers. To give you a better and more useful answer, we have decided to test what works in real life...

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A pseudo terminal for the Yocto-Serial

By seb, in Tiny PC and Programming, may 20,2016.

Many home automation projects use mini-PCs running under Linux. Some of these mini-PCs have an HDMI output, but other, such as the OLinuXino, don't have a video output. In this case, the solution to configure these boards is to use a serial console. The problem is that no computer has a serial port anymore and if you have an old enough computer to have an RS232 port, you can't use it because the RS232 port works in 12 Volts. The traditional solution is to use a USB-serial adapter sold by the constructor. But you can also use a Yocto-Serial.

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A $9 CPU to use our modules

By seb, in Tiny PC, october 30,2015.

As you might have guessed, at Yoctopuce we like to try out new computer and electronic gadgets, and especially so when it's possible to use them with our modules. A few months ago, Kickstarter financed a $9 "computer": C.H.I.P. We backed this project enthusiastically, and last week we received the Alpha version of this mini-PC.

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The quest for the ideal Mini-PC (second edition)

By martinm, in Reviews and Tiny PC, january 02,2015.

Almost two years ago, we wrote a quick review of some available mini PCs. Since then, new machines have appeared on the market. We tested some of them. Some were used to control some of our friday projects, others were bought just for the fun of playing with them. Here are some thoughts about these mini-PCs we tested...

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Yoctopuce, get your stuff connected.