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Introduction Learn how to use a multimeter with this comprehensive guide. Whether you're a beginner or an experienced DIY enthusiast, mastering the functions of a multimeter is essential for troubleshooting electrical problems. Our step-by-step instructions and practical tips will help you understand the basics of using a multimeter, from measuring voltage and current to testing continuity and resistance. Discover the versatility of this indispensable tool and gain the confidence to tackle electrical pr...

Overview A potentiometer is a device that can change its resistance by moving a contact along a fixed resistor. It has three terminals: one connected to each end of the resistor and one connected to the movable contact. By adjusting the position of the contact, the potentiometer can divide the input voltage into different output voltages [Read more in Wikipedia]. Potentiometers work by creating a voltage drop across the resistor that is proportional to its length. For example, if the input voltage is 10...

GY-271 Compass Module Features Magnetic current and field have directly relation with each other. When current flows in a wire (electrons start travelling in one direction), a magnetic field is created. The main idea of compass sensors is based on this relationship. The direction of the earth's magnetic field affects the flow of electrons in the sensor. By measuring these changes in current, the sensor will be able to detect direction.The GY-271 module uses the QMC5883L chip to detect magnetic fields an...

MPU9250 9-Axis Gyro Accelerator Magnetometer Module Features The MPU9250 9-Axis Gyro Accelerator Magnetometer Module can provide acceleration, angle change and magnetic field on 3 axes x, y and z with high speed and accuracy. This module also features an embedded temperature sensor that can measure the temperature range between -40 to +85 degrees Celsius. The communication protocol of this module is I2C. MPU9250 9-Axis Gyro Accelerator Magnetometer Module Pinout Thi...