Although Yoctopuce sensors have a built-in data logger, it is often useful to store the data in a database or CSV file for local processing. Ideally, one would like to fetch the data in real time as much as possible, but reserving the possibility to retrieve the data stored by the module in case of temporary connection loss. And this is not so difficult to do...
At Yoctopuce, we like to travel by electric bike and we have decided to measure the charge of an electric bike battery with a Yocto-Watt and the Yocto-Visualization application. This doesn't require any programming, but a rather good knowledge of Yocto-Visualization to obtain a readable and pretty graph. We thought that monitoring the electrical consumption of a device could interest other people. Here is what we did.
At Yoctopuce, we like raspberries. So we thought that we would have our own local production, with an automatic watering system controlled by our modules. To do so, we retrieved a raspberry bush from the garden and we planted it in a pot with sensors to monitor its health. The aim is to adjust the water dispensing based on the humidity of the soil. Unfortunately, it's too late in the season to have raspberries this Summer, but we are still going to tell you about the modules used to maintain the raspberry bush alive.
A few years ago, we demonstrated how to use a Yocto-milliVolt-Rx to measure DC current, by measuring the very low voltage at the terminals of a shunt resistor. More recently, we thought that it could be useful to extend this scenario to the measure of strong alternative currents using simple ring-shaped current transformers, like current clamps.
Infrared proximity sensors, such as the Yocto-Proximity, are an effective alternative to pressure switches in order to detect when an object has been placed at a given location. But for reliable and robust use, you must respect a few implementation rules, especially if you put a protective glass in front of the sensor.
1 2 3 4 5 6 ... 10 ... 20 ... 23