Design and Development of Pepper Harvester

This project presents a cost-effective and efficient mechanical solution for the automated harvesting and threshing of black pepper (Piper nigrum L.). The system integrates a 12V DC motor with worm-spur gear transmission that drives counter-rotating rubber rollers for gentle on-plant threshing. The portable design incorporates a telescopic pole for extended reach, Pulse Width Modulation (PWM)-based speed control for operational flexibility, and an integrated collection system. Field testing demonstrates 86% harvesting efficiency with only 0.8% berry damage, significantly outperforming traditional manual methods. The harvester reduces labour requirements by 60% and operational costs by 66% per acre, while maintaining a field capacity of 8 kg/hour. This innovation provides small-scale farmers with an affordable, sustainable solution that enhances productivity while maintaining premium berry quality.