Abstract—Lawnmowers are the grass cutters which are used to cut the grass in the fields. Now a days growing grass became interior decoration for the companies, colleges, and various other places. But to maintain this grass in a proper way we need grass cutters. In the early 1827’s lawnmowers are used as conventional grass cutters. Later, in order to improve its efficiency and automate the process of grass cutting various new technologies such as remote operated lawnmowers arrived. In remote operated lawnmowers the range of grass cutting equipment is limited as the signal strength is very weak and also the equipment required for these lawnmowers is sophisticated and expensive. In this work to overcome these limitations remote controlled lawn mower is incorporated with a mobile phone which acts as a link between user and grass cutter.In this work, two mobile phones are used in which one acts as a transmitter and the other as a receiver. Mobile phone that makes a call to the mobile phone attached to the circuit of lawnmower. In the course of a call, if any button is pressed, a tone corresponding to the button pressed is heard at the other end of the call. This tone is called ‘dual-tone multiple-frequency’ (DTMF) tone. The microcontroller perceives this DTMF tone with the help of the phone stacked in the lawn mower. The received tone is processed by the microcontroller with the help of DTMF decoder MT8870. The decoder decodes the DTMF tone into its equivalent binary digit and this binary number is sent to the microcontroller. The microcontroller is preprogrammed to take a decision for any given input and output. It’s decision to motor driver in order to drive the motor for forward or backward motion or a turn. The cutter is turned on or off with the help of a mobile phone by a number which is instructed in the program. The mobile that makes a call to the mobile phone stacked in the lawn mower acts as a remote and performs the function of a grass cutter.

Index Terms—Lawn Mower, Mobile phones, Rechargeable, Cutting Efficiency, Surgical Blade

Cite: K Prasada Rao, V RamBabu, K Santa Rao, and D Venkata Rao, "Mobile Operated Lawnmower," International Journal of Mechanical Engineering and Robotics Research, Vol.3, No. 4, pp. 106-117, October 2014.