Abstract
The goal of this project is to use DTMF decoders, sand micro-controllers to control autonomous navigation of a robot between a start and end point along a fixed path. This has very practical applications, eg. a mobile phone can be used to start the car and allow it to autonomously drive itself to a pick up point and vehicles in warehouses to carry goods fro m point A to point B, etc. A DTMF decoder is interfaced with the microcontroller , and a phone on auto answer mode is connected to t he decoder. When the robot is called and a number on the user’s phone is press ed, the tone is sent to the decoder, which decodes and sends a signal to the microcontroller, and the robot is started. To avoi d obstacles the robot has inbuilt Infrared sensors which detect obstacles and inform the microcontroller, which accordingly guides the r obot. In this setup only three sensors were used gi ven the limitation in terms of input ports. However, a greater number of sensors w ould allow for the robot to be aware of more specif ic situations. Therefore, it can be made more adaptable in varying situations. The t est robot was programmed using Embedded C with AVR Studios. This approach uses existing technologies and is very inexpensive.
Published Version (
Free)
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