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What is NFC? NFC (Near Field Communication) is a short-range wireless technology that allows two electronic devices to communicate when they are within a few centimeters of each other. It’s most commonly used in contactless payments, digital keycards, smart ta...

What is NFC Tools? NFC Tools is an app which allows you to read, write and program tasks on your NFC tags and other compatible NFC chips. Simple and intuitive, NFC Tools can record standard information on your NFC tags which will be compatible with any NFC dev...

What is 7-Segment LED Backpack? This version of the LED backpack is designed for these big bright 7-segment displays. These 7-segment displays normally require 13 pins (5 'characters' and 8 total segments each) This backpack solves the annoyance of using 13 pi...

What is a Servo Motor? A servo motor is a rotary actuator that allows for precise control of angular position, velocity, and acceleration. It is commonly used in robotics, CNC machinery, conveyor belts, and various automation systems. A servo motor works by re...

What is APC220 Radio Data Module? The APC220 Radio Data Module is a compact, low-power, wireless transceiver module designed for serial communication over long distances using the 433 MHz ISM band. It’s commonly used for Arduino projects and wireless sensor ne...

What is Digital Input Pull-Up resistor? In Arduino, a Digital Input Pull-Up Resistor is an internal resistor that you can enable on digital input pins to ensure a known default voltage level (HIGH) when the pin is not actively connected to anything (i.e. it’s ...

What is RFM69HCW Radio Data Module? The RFM69HCW is a high-performance, low-power radio transceiver module designed for long-range wireless communication using sub-GHz frequencies. Unlike simple UART-based modules like the APC220, the RFM69HCW offers SPI commu...

What is a Rotary Encoder Button? A rotary encoder button is an input device that combines: a Rotary encoder — to detect rotational direction (clockwise/counterclockwise) and steps and a Push button — to detect when the knob is pressed down. This component is s...

What is a Flat Vibration Switch? This is a low-sensitivity, directional vibration-induced trigger switch. Inside is a very soft spring coiled around a long metal pin. When the switch is bumped from the side only, the spring attached to the first pin touches th...

What is a Whadda Vibration Motor Module vibration motor? We already have a tutorial on how to use a vibration motor on its own. The Whadda Vibration Motor Module simplifies this process by integrating all the essential components—such as a transistor, capacito...

What is a Heart Rate Sensor? Heart Rate Sensor a plug-and-play sensor that can easily incorporate live heart-rate data into projects. In the lab, we offer the one from Whadda, but this tutorial will work for Adafruit Pulse Sensor Amped as well. Know more about...

What is an Electromagnet? The Grove Electromagnet is a type of magnetic actuator that becomes magnetized when an electric current passes through it. When powered on, it can attract small ferromagnetic objects such as nails, screws, or paper clips. When the cur...

What is a Reed Switch? The Reed Switch is a type of magnetic switch that changes its state in the presence of a magnetic field. It contains two small ferromagnetic reeds sealed inside a glass tube. When a magnet comes close, the reeds attract each other and cl...

What is a DFPlayer Pro? The DFPlayer Pro is an upgrade of the DFPlayer Mini MP3 Player for Arduino. It is a small and low-priced MP3 module with an internal storage of 128MB. The module can be used as a stand-alone module with an attached battery, speaker and ...