YouTuber builds Arduino robot Turtle Bot seven times larger

The Turtle Bot is one of the classics for Arduino tinkering. The YouTuber UncleStem has built it seven times larger – and it works.
Android Police

Optical, capacitive, and ultrasonic fingerprint sensors — how do they work?

Zac has been writing about Android as a hobby since he was a teenager and fulfilled his ambition of doing so professionally when he joined Android Police as a Reviewer in 2020. Zac specializes in ...
Hackaday

Time-of-Flight Sensors: How Do They Work?

If you need to measure a distance, it is tempting to reach for the ubiquitous ultrasonic module like an HC-SR04. These work well, and they are reasonably easy to use. However, they aren’t without ...