The quest for the perfect USB battery, part 1

By martinm, in Reviews, august 02,2024.

10-12 years ago, you could buy a USB battery for 10-20 euros, and use it to power a Yoctopuce experiment without asking yourself too many questions. Unfortunately, today it's very hard to find a USB battery that can power a Yocto-Wireless or YoctoHub-GSM-based experiment. So we decided to invest some time, and money, in trying to find a good one.

Testing the Renesas FS3000 air speed sensor

By mvuilleu, in Reviews and Measures, july 26,2024.

Renesas recently released a new I2C sensor that caught our eye: a tiny miniature sensor for measuring airflow velocity. It's a measure we're interested in, because many industrial processes need well-regulated ventilation to run reproducibly, and progressive clogging of filters can significantly affect ventilation capabilities. Let's take a look at this sensor...

Testing the SenseCap S700 V2 weather station

By Tiago, in Reviews, Measures and Internet of Things, june 28,2024.

A few weeks ago, we presented the Yocto-SDI12 which communicates with SDI-12 sensors. Today, we're going to use the Yocto-SDI12 to retrieve measures from Seed Studio's integrated SenseCAP S700 V2 weather station and display them using Yocto-Visualization for Web.

Testing the TR-EVO-60M-I2C rangefinder

By martinm, in Reviews, february 23,2024.

More or less by chance, we came across the TR-EVO-60M-I2C rangefinder manufactured by TeraBee. It promises a detection distance of 0.5 to 60 meters with a viewing angle of 2°. All this in the volume of a 3cm cube with an I2C and serial interface. At around 100 CHF apiece, we couldn't resist buying one to play with.

Testing Sensirion's STC31 CO2 sensor

By martinm, in Reviews, december 22,2023.

Yoctopuce has been offering a CO2 sensor for some time now. The current model, the Yocto-C02-V2, has a measure range of 0-40000ppm, or 0-4%. This is sufficient for most common applications. But what if you need to measure higher concentrations? Sensirion now offers the STC31 sensor with a measure range from 0 to 100%.