i have a farm.100 sqm.i want to develop a robot for spraying pesticides and nutrients,anybody can guide me where to start.
That sounds like a really ambitious project for a beginner. I would start by looking at what kinds of robots or equipment others have used for spraying plants or similar tasks to get an idea of what parts your robot will need. Also, I suggest trying to keep your questions on our forum and other forums more directed. For example, questions like how well two specific parts might work together or if one particular type of motor is best suited for a specific task.