The SparkFun Ultrasonic Distance Sensor - TCT40 (sen-24805) a user-friendly upgrade to the popular HC-SR04 sensor, offers non-contact distance measurement from 2cm to 400cm with an accuracy of 3mm.

Hi, I'm Bill. I'm a software developer with a passion for making and electronics. I do a lot of things and here is where I document my learning in order to be able to inspire other people to make ...

College of Electronic and Optical Engineering & College of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NJUPT), Nanjing 210023, China College of ...

Nathan is a tech journalist from Canada who spends too much money on gadgets. You can find his work on Android Police, Digital Trends, iMore, Mobile Syrup and ZDNET. Nathan studied journalism at ...

The Google Pixel 9 series is here, and one of the biggest upgrades it delivers is the use of a new ultrasonic fingerprint sensor, and it’s the same one used in Samsung Galaxy devices. In the “Tensor ...

Abstract: A compact fiber-optic ultrasonic sensor based on the anti-resonant reflecting optical waveguide (ARROW) in hollow core fiber is proposed and demonstrated experimentally. The proposed sensor ...

I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ended up using a microcontroller and a piece ...

In the days before integrated circuits became ubiquitous, providing advanced functionality in a single package, designers became adept at extracting the maximum use from discrete components. They’d ...

Effective and innovative freshly produced preservation methods are paramount for ensuring safe and sustainable food. Edible coatings for fresh dates can provide an additional protective layer to ...