USB-C rechargeable AA batteries, really?

By martinm, in Reviews, october 14,2022.

While shopping at one of our usual suppliers, we came across an intriguing gadget: AA batteries, with an integrated USB-C charging port and which promise a capacity of 1600mAh for a 1.5V voltage. We couldn't resist the temptation to buy a pack, just to check if an AA battery with an integrated charger really works.

Experiment with USB power supplies

By martinm, in Reviews, october 22,2021.

YoctoHubs make it very easy to create DIY projects that are remotely controlled by a server. All you have to do is to provide a network connection and a power supply, a simple USB charger can do the trick. We recently asked ourselves the following question: all USB chargers are probably not equivalent in terms of efficiency, but up to what point?

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".

How many USB sensors can you connect in 2021?

By mvuilleu, in Reviews, june 25,2021.

Five years after our first series of tests on the maximum number of USB sensors that we could use on a machine and on the efficiency of the different types of hubs to manage this type of traffic, we offer you a new series of tests to know whether the situation has evolved since 2016...