  Manual spraying of pesticides and herbicides to crops and weed inhibitors
onto the field are quite laborious work to humans. Manual trimming of selected
unwanted plants or harvested crops from the field is also difficult. Our
project proposes a multipurpose solar powered, flexible, Remote Controlled,
semi-automated spraying robot with 4 Degrees of Freedom (DoF) in spatial
movement, with an additional plant mowing equipment. The robot is designed to
spray pesticide/insecticide directly onto individual lesions minimizing wastage
or excess chemical spraying, hence making the system cost effective and also
environment friendly. It is designed to cut down undesired plants selectively
by remotely controlling the start and stop of the mowing system. Alternatively,
it also serves the purpose of maintaining lawns and sports field made of grass.
The same system can be used for water spraying and mowing the grass to desired
levels, leading to proper maintenance of the field. The robot is designed to
move at 1.4m/s, with an effective spraying area of 0.98 sq. m. by the nozzle
and an effective cutting area of 0.3 sq. m. by the mower, when stationary. The
prototype has a battery back-up of 7.2hrs under minimum load conditions.
