Overview of Analog Joystick An analog joystick is an input device used to change the position of a cursor based on the movement of the joystick. It outputs analog voltages in the X and Y directions, which correspond to the joystick’s position. These analog voltages can be processed to determine the cursor’s position or to …
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Overview of RFID The EM18 RFID reader module is designed to read RFID cards operating at 125 kHz. When an RFID card comes within the reader’s range, the unique data encoded on the card is transmitted as an RF signal. The reader then sends this data in byte format through its serial transmit pin. A …
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Introduction Stepper Motor A stepper motor is a brushless DC motor that divides a full 360° rotation into a series of equal steps. The motor rotates by following a specific sequence of control signals, and the rotation speed can be adjusted by changing the rate at which these signals are applied. Stepper motors come in …
Overview of DC Motor DC Motor A DC motor converts electrical energy from Direct Current (DC) into mechanical energy. In a motor, this mechanical energy results in the rotational movement of the motor shaft. The direction of the motor’s rotation can be reversed by changing the direction of the DC current flowing through it. The …
Overview of Servo Motor Servo Motor A servo motor is an electric device designed for precise control of angular rotation, making it ideal for applications requiring exact positioning, such as robotic arm control. It includes a motor paired with control circuitry to manage the motor shaft’s position with high accuracy. Operating as a closed-loop system, …
Introduction The accelerometer is an electromechanical device that measures the force of acceleration due to gravity, typically expressed in “g” units. It is commonly used in tilt-sensing applications, such as in mobile phones and gaming devices. The ADXL335 accelerometer measures acceleration along the X, Y, and Z axes. It provides an analog voltage output that …
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Introduction HMC5883L Magnetometer Module The HMC5883L magnetometer measures both the direction and strength of the Earth’s magnetic field, making it suitable for low-cost compassing and magnetometry applications. This sensor captures magnetic field values along the X, Y, and Z axes, with a range of milli-gauss to 8 gauss. It’s often used to determine the heading …
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Overview of LM35 The LM35 is a temperature sensor capable of measuring temperatures from -55°C to 150°C. This 3-terminal device provides an analog voltage output that is directly proportional to the sensed temperature. As the temperature rises, the output voltage increases accordingly. To allow a microcontroller to read this data, the analog output from the …
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Overview of PIR Motion Sensor The PIR (Passive Infrared) sensor detects infrared radiation, primarily emitted by living objects. This makes it ideal for detecting the presence of people, animals, or any warm-blooded beings. The sensor is divided into two segments, which are connected to a differential amplifier. When a stationary object is in front of …
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Overview of DHT11 The DHT11 is a digital sensor that provides both humidity and temperature readings via a single-wire communication interface. It measures relative humidity in a range from 20% to 90% RH and temperature in degrees Celsius from 0 to 50°C. This sensor has four pins, with two for power supply, one unused, and …
