Robotbanao SG90 Servo Motor and Ultrasonic Sensor for Arduino Projects - Combo Pack Electronic Components Electronic Hobby Kit

Ultrasonic Ranger is an Ultrasonic Distance Sensor v2.0 i.e. a transducer that utilizes ultrasonic waves to measure distance; moreover, it is a non-contact distance measurement module that works at 40 kHz and can measure from 3 cm to 350 cm with an accuracy up to 2 mm. This module has an ultrasonic transmitter and an ultrasonic receiver so you can consider it as an ultrasonic transceiver. It has 4 pins with their functions as shown in the figure above. When the 40 kHz ultrasonic wave generated by the transmitter encounters the object, the sound wave will be emitted back, and the receiver can receive the reflected ultrasonic wave.It is only necessary to calculate the time from the transmission to the reception, and then multiply the speed of the sound in the air (340 m/s) to calculate the distance from the sensor to the object. Formula: Distance = Echo Signal High Time x Sound Speed (340M/S)/2. ABOUT SG90 The SG90 2.5kgCm (Apx.) 180 Degree Rotation Servo Motor rotates 90° in each direction making it 180° servo motor. It is a Digital Servo Motor that receives and processes PWM signal faster and better. It equips sophisticated internal circuitry that provides good torque, holding power, and faster updates in response to external forces. ULTRASONIC SPECIFICATIONS Operating Voltage(VDC) - 3.2 ~ 5.2 Operating Current - 8 mA Ultrasonic Frequency - 40 kHz Measurement Range - 3 cm to 350 cm Accuracy - 2 mm Dimensions (LxWxH) - 40 x 22 x 16 Weight (gm) - 10 SG90 SPECIFICATIONS Weight(gm) - 9 Operating Voltage - 3.0 – 7.2 V Operating Speed @4.8V - 0.10sec/60° Stall Torque @4.8V - 1.2 kg-cm Stall Torque @6.6V - 1.6 kg-cm Operating Temperature (°C) - -30 to 60 Dead Band Width - 7 ?s Gear Type - Glass Fiber Rotational Degree - 180