Geofencing is a technology that creates virtual boundaries around a specific physical location using tools like GPS, Wi-Fi, RFID, or cellular networks. It enables control over the movement or use of an object or device within a defined geographic area. To establish geofencing, virtual parameters are set around a designated area using special software that…

Color detection is the process of identifying and distinguishing colors within an image, video, scene, or object. Many embedded and robotic applications require this feature, as it’s useful for sorting, selection, test strip reading, path determination, and more.  Two standard sensors used for color detection include TCS230 or TCS3200. TCS3200 recognizes various colors based on…

Typical electronic voting machines require voters to push a button to cast their ballots. However, there have been security concerns with these devices and whether they’re at risk for tampering. One solution is to use biometric-based voting machines, which use fingerprint matching or a retina scan to verify an authorized voter.  In this project, we’ll…

In this project, we’ll create an 8-bit IO port Arduino library that reads and writes all eight bits in a single command by combining Arduino’s pins. This means sending and receiving the 8-bit data from a single pin will be possible. Arduino provides digital output using the digitalWrite() function and receives digital input via the…

Fire alarms are critical in homes and buildings, mitigating fire risks and ensuring safety. These alarms aim to safeguard lives and property, providing a warning and initiating emergency procedures. In this project, we’ll build a fire alarm system using ESP32, a flame sensor, and an MQ2 gas sensor. This device will trigger a buzzer and…