Description

The HC-SR04 ultrasonic sensor uses sonar to measure the distance to an object. It offers excellent range accuracy and stable readings in an easy-to-use package. Its operation is not affected by sunlight or black material like sharp range finders are (soft materials like cloth can be difficult to detect). SG90 Servo Motor: Torque: 1.8 kg-cm (4.8v). Speed: 0.10 sec/60 degree. Weight: 9 grams. Gear Type: Plastic. Rotational Range: 180 degree.