Yocto-SPI and Alphasense OPC-N3

By martinm, in Measures and Programming, september 13,2019.

The Yocto-SPI documentation contains an example to interface the AlphaSense OPC-N2 particle counter. Since then, Alphasense has released a new model, the OPC-N3, and the commands to query it are slightly different. This week, by popular request, we explain how to make the OPC-N3 work with a Yocto-SPI and we take this opportunity to introduce a small innovation.

New: the Yocto-Altimeter-V2

By mvuilleu, in Measures and New stuff, september 08,2019.

There are probably not many measuring devices based on a physical phenomenon as unstable as barometric altimeters. And yet, they are still widely used, for want of anything better. Technological progress even makes it possible to go even further in the accuracy of this technique, which seems to defy common sense. Welcome to the Yocto-Altimeter-V2!

New: the Yocto-MaxiMicroVolt-Rx

By mvuilleu, in New stuff and Measures, august 19,2019.

To open the door to new applications, we extend our range of analog voltage measuring tools. The newcomer, the Yocto-MaxiMicroVolt-Rx, is the most accurate of all, and it can measure minute voltages, in the order of the micro-volt. Let's see what this means...

How to choose a temperature sensor

By mvuilleu, in Measures, may 24,2019.

More than half of the Yoctopuce devices in the Environmental Sensors category perform temperature measures in one way or another. Why are there so many ways to measure the temperature and what are the advantages and disadvantages of each method?

How to detect a person approaching

By mvuilleu, in Measures, april 19,2019.

We have been asked several times which was the best method to detect someone approaching, for example to automatically turn on the screen of an interactive terminal. One relatively intuitive solution is to use a telemeter such as the Yocto-RangeFinder. This can work in most cases, but there are some pitfalls that you should avoid...