An automated lawn mower is a machine designed to cut grass without requiring human guidance or
control. With the continuous advancements in technology, automation has become integral to
nearly every aspect of modern life. From household appliances to industrial machinery, automation
has transformed the way we interact with our environments, reducing manual labour and
improving overall efficiency. The emergence of automated lawn mowers follows this trend,
replacing the conventional lawn mowing technology that demands significant human effort.
Thiswork aims to develop an improved automated lawn mower that is both economically accessible
and user-friendly, designed with locally sourced materials to minimize production costs. Unlike the
existing robotic lawn mowers technologies, our model emphasizes a simple design making it easy to
maintain and repair without specialized tools or skills. It is equipped with advanced sensor
technology like the HC-SR04 ultrasonic and infrared sensors for obstacle detection and avoidance
within the ranges of 10 to 50cm. When operating at a distance beyond 50cm, the mower
consistently moved forward indicating an environment with no obstacles. Within a range of 30 to
50cm, the system effectively slowed the mower, achieving a 150millisecond response time and 98%
accuracy. At closer proximities of 10 to 30cm, the mower reversed and turned with a slightly
reduced accuracy of 95% and a 180millisecond response time, while obstacles detected at less than
10cm prompted at immediate stop within 120milliseconds at a 97% accuracy rate. It also integrates
a 5kHz electromagnetic perimeter wire for systematic navigation and is powered by an 18V DC
rechargeable battery, making it both sustainable and eco-friendly.