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.

Arduino library for the ENS16x digital four channel MOX gas sensors with I2C interface from ScioSense. ENS16x is a range of digital multi-gas metal oxide (MOX) sensors, specifically designed for ...

With many modern cars coming equipped with an array of ultrasonic sensors mounted in the bumpers, it stands to reason that many junk yards have them too. [jimk3038] points out that, unless they ...