Introduction A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a separate low-power signal, or where several circuits must be controlled by one signal. […]

Introduction The Ultrasonic Sensor sends out a high-frequency sound pulse and then times how long it takes for the echo of the sound to reflect back. The sensor has 2 openings on its front. One opening transmits ultrasonic waves, the other receives them. In this lesson we will show you how the HC-SR04 Ultrasonic Sensor works and how […]

Introduction In this project, we will go over how to build a smoke sensor circuit with the micro bit. This is a sensor that is not only sensitive to smoke, but also to flammable gas. The smoke sensor reports smoke by the voltage level that it outputs. The more smoke there is, the greater the […]

Introduction Over here we will show you what is the flame sensor and how it works, you can follow this lesson to get how to use the flame sensor with the micro bit. Flame sensor (Infrared receiving triode) is specially used on robots to find the fire source. This sensor is of high sensitivity to […]

Introduction In this guide, you will learn how to sense the light level using a micro:bit. By using of a clever bit of coding the micro:bit’s display LEDs can be used to measure the light level, without the need for any extra hardware. However, this feature is only available when using the JavaScript blocks editor. […]

Introduction Analog Noise Sound Sensor Detection Module is a sensor module based on MIC sound sensing element. Sound Sensor is particularly sensitive to sound intensity, and it can be used to detect ambient sound level. Louder noise brings bigger output Sine wave amplitude. Parts Needed 1x micro:bit 1x Micro B USB Cable 1x micro:bit Breakout (with Headers) 1x Breadboard […]

Introduction In this experiment you will look at an example of using the accelerometer lets make a sensitive movement alarm from out micro:bit.The expanding example combining the use of the accelerometer on the micro:bit to measure the orientation of the micro:bit and use it to control the angle of a servo. Parts Needed 1x micro:bit 1x Micro […]

Introduction This experiment is just plain fun! Have you ever used a compass? Are you a little confused in terms of which direction to go? Fear not! We will build a digital compass that will keep you on track to the North Pole using the micro:bit’s onboard compass chip! Parts Needed 1x micro:bit 1x Micro B USB […]

Introduction In this lesson, we will show how to use the mircro bit with the active buzzer. When we press the button”A”, the buzzer will continue to beep, and when we press the button “B”, the sound will disappear. Parts Needed 1x micro:bit 1x Micro B USB Cable 1x micro:bit Breakout (with Headers) 1x Breadboard 14x Jumper Wires 1x Active Buzzer About Buzzer As a […]

Introduction In this experiment, we will again bridge the gap between the digital world and the analog world. We’ll be using a piezo buzzer that makes a small “click” when you apply voltage to it (try it!). By itself that isn’t terribly exciting, but if you turn the voltage on and off hundreds of times […]