Knock-Knock
Introducing Knock-Knock, your compact home assistant. It boasts the capability to seamlessly manage household devices, including fans, lights, and doors. With a simple knock on the surface where it's placed, using the corresponding pattern, you can effortlessly control the activation and deactivation of your appliances.
The Brain of the Knock-Knock
.jpeg)
At the heart of our prototype lies the Arduino Nano, serving as the central control hub for all functions, including managing the speaker, relays, and status light. To detect knocks, we utilize a piezo speaker, which senses vibrations generated by the impacts, and the Arduino then analyzes the resulting patterns.
Relays
One of the more intricate aspects of this project involves dealing with the standard AC 230V power supply. The team had to devise a creative solution by modifying a wall plug to enable appliance control using a relay.
The Impact
Hack&Roll 2018 attracted a remarkable turnout of over 287 participants and welcomed esteemed judges from well-established companies like Carousell and Gojek. This hackathon yielded numerous innovative and impactful ideas, prompting our generation to reflect more deeply on environmental concerns.