Sound playback module Voice Recorder is a device that captures speech (or audio) in various situations like meetings, lectures, interviews, conferences, broadcasts etc. so that you can easily edit or play them back.The most common sound playback module is ISD 1820 Voice Recorder Module. It is based on ISD1820, which is a multiple‐message record/playback device. …
Motor Driver Module A motor driver module is a simple circuit used for controlling a DC motor. It is commonly used in autonomous robots and RC cars (L2938N and L293D are the most regularly utilisedSou motor driver chips). A motor driver module takes the low voltage input from a controller like Arduino. This input logic …
Active Buzzer A buzzer, also called a piezo buzzer, is basically a tiny speaker that you can connect directly to an Arduino or use directly to produce sound. You can make it sound like a tone at a frequency you set. Piezo buzzers are constructed by placing electrical contacts on the two faces of a …
Joystick Joysticks are very often related with games, present on console controllers and used to manage players movements. But, in actuality, it’s used in a lot more places. Technically, a joystick is an input device consisting of a stick that pivots on a base and reports its angle or direction to the device it is …
Keypad Keypad Many times, we are required to put inputs to our microcontroller based projects, that is when a 4 x 4 matrix keypad comes into play. It has 16 keys in total that acts as input keys for specific characters/digits. Beneath each key is a membrane switch. Each switch in a row is connected …
LDR Module LDR (light dependent resistor) module is a sensor module which is used to detect the presence of light or to measure its intensity. It is simply a resistor which potentiates with the intensity of light. The output of the module becomes higher and higher as the presence of light increases and vice versa. …
Laser Diode Emitter There are times when we want to use laser lights in our projects. These lights are theoretically perfectly parallel and the intensity remains concentrated in the axis of traversal of light. A laser module is very easy to use, you can use Arduino control, do controllable laser pointer, theft detection, etc. interesting …
GPS Module GPS (Global Position System) is a navigation system based on satellites, made up of at least 24 satellites. It is capable of working in any weather conditions, and from anywhere in the world. GPS satellites transmit at least 2 low-power radio signals. The signals travel by line of sight, meaning they will pass …
GSM Module GSM is an international standard for mobile telephones. It is an acronym that stands for Global System for Mobile Communications. It is also sometimes referred to as 2G, as it is a second-generation cellular network. To use GPRS for internet access, and for the Arduino to request or serve web pages, you need …
7 segment LED display Many of us might have seen those arrangements of lights in many digital clocks and traditional calculators that light up in combinations to display different numbers. That display used to show decimal numerals is called a 7-segment display, 7-segment because it’s an arrangement of 7 segments put into order to display …