Correcting the linearity of a PMP24 proportional relay

By mvuilleu, in Electronics and Measures, september 26,2025.

Specialized online stores offer a variety of proportional control solid-state relays, enabling you to control, for example, the output power of a resistive heating element more precisely than with a simple on/off relay. However, these components are often not as proportional as their name suggests, which can affect how the control process works. So we're going to take a few measures to see if this can be improved.

Recording animations with the Yocto-Watt-V2-C

By mvuilleu, in Measures and Electronics, september 05,2025.

To illustrate last month's post on the operation of dimmers, we used small animations made manually on the basis of images produced by the Yocto-Watt-V2-C. In doing so, we thought it would have been handy if the Yocto-Watt-V2-C had been able to record measure sequences itself in animated form. So this week, we did just that :-)

Can I use a dimmer switch with an LED bulb?

By mvuilleu, in Reviews, Electronics and Measures, august 15,2025.

With the disappearance of incandescent and halogen bulbs due to their poor energy efficiency, we're being encouraged to replace the bulbs in our lamps with equivalent LED bulbs. But if you're used to dimming your lights with a dimmer switch, you've probably noticed that your existing dimmer often doesn't work well with these new bulbs. Why is this, and how can we fix it?

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.

Using an I2C infrared camera

By mvuilleu, in Electronics, DIY and Programming, february 10,2023.

There are now small infrared cameras in the form of break-out boards that are very affordable and easy to integrate into automation projects. Surprisingly, they often use the I2C protocol to transfer data. Today, we show you how to use a Yocto-I2C to interface this type of camera.