Accuracy of temperature measures by thermocouple

By mvuilleu, in Measures, september 17,2021.

We were recently asked details on the absolute accuracy of the Yocto-Thermocouple and on the temperature measures by thermocouple in general. As it's impossible to answer this question without detailed explanations, we wrote it into a post so that it can be useful to everybody. So, let's see which absolute accuracy one can reasonably expect from a thermocouple and then let's test with an experiment whether the theoretical value matches the real one...

Testing the TCS34725 RGB color sensor

By martinm, in Reviews and Measures, july 30,2021.

We have been asked several times whether we were going to manufacture a color sensor, also known as a RGB sensor. To be honest, the answer is: "we don't really know". You are about to understand why: this week, we are going to interface the TAOS TCS34725 color sensor with a Yocto-I2C.

Interfacing the GY-US42V2 sonar

By martinm, in Reviews and Measures, july 09,2021.

At Yoctopuce, we like to buy random sensors, just to check if we can make them work with Yoctopuce hardware. This week we chose the GY-US42V2 sold by Play-Zone.ch and referenced as a "SRF02".

Test of the RFbeam K-LD2 radar sensor

By mvuilleu, in Reviews and Measures, june 04,2021.

We are always on the lookout for affordable new sensors which our customers could find useful. Among the difficult tasks, there is the remote detection of moving objects. We were therefore happy to discover a small radar sensor named K-LD2 manufactured by RFbeam.

Test of the LIDAR-Lite v4

By mvuilleu, in Reviews and Measures, april 23,2021.

We have already mentioned several sensors for the detection and distance measure of nearby objects: cheap acoustic sonars, very expensive laser telemeters, and several optical sensors in between. Among those, we hadn't yet tested the Garmin LIDAR-Lite v4.