Development of Sustainable Coin Based Drinking Water Vending Machine

The rapid advancement of electronics has significantly transformed daily life, impacting industries such as medicine, telecommunication, and home automation. This research presents a fully automated, coin-based water dispenser system utilizing a microcontroller and sensors. The system efficiently dispenses water or cola, integrating IR sensors to detect the presence of a glass and prevent wastage. A coin detector ensures only valid coins trigger the dispensing process, with the motor operating only when a glass is present. If the glass is removed mid-process, the system halts water flow until it is replaced. This smart dispenser enhances automation and promotes water conservation