The quest for the perfect USB battery, part 3

By martinm, in Reviews, october 04,2024.

This week, we continue our series on the search for the ideal battery to power Yoctopuce modules, especially when driven by a YoctoHub which can go into sleep mode. This is important, because standard USB batteries have the unfortunate habit of shutting down completely as soon as the hub goes to sleep. After the success of variant (C) of the Waveshare Solar Power Manager battery and the fiasco of variant (B), we decided to test variant (D), just to be sure.

Upcycling an old fan

By mvuilleu, in DIY, Internet of Things and Measures, september 27,2024.

Almost ten years ago, we showed you how to combat humidity in a room using humidity-controlled ventilation. The system described had just then been installed in a cellar, where it worked efficiently until very recently. Unfortunately, the discovery of mold alerted us to a problem, and a quick check revealed that the system had broken down: the fan controlling the air intake had died.

Using PyInstaller with the Yoctopuce library

By seb september 20,2024.

Many of our customers use our Python programming library for their projects. This language is very easy to learn, and can be used on all 3 major operating systems. However, distributing an application is a little more complicated, as you need to distribute not only the Python code for the application, but also the dependencies and the virtual machine. Fortunately, there's an open source utility called PyInstaller, which allows you to package everything in an executable. However, to use it with our library, you need to provide it with some additional information.

A decorative IoT and PoE lamp

By martinm, in DIY and Internet of Things, september 13,2024.

To tell you the truth, this week we had planned to continue our series on USB batteries, but it turns out that the associated experiments are taking longer than expected. Actually, this is rather good news, but this also means we had to fall back on an emergency topic...

How to extend an I2C bus

By mvuilleu, in Electronics, september 08,2024.

Following on from our quick tutorial on I2C, we're going to take a closer look at a particular case that often causes problems: the use of long wires for I2C communications. This is particularly true of Yoctopuce sensors that you can split, if you decide to offset the sensor part by several meters.