Dish Positioning Control by Stepper Motor / Geared Motor

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Uploaded on April 12, 2012 by Efxkits

Model No: 186 This is a method to ease adjusting the position of an antenna to improve reception at a television received by the antenna. An electronic dish position control system is made up of two motors that enable the dish to rotate both in horizontal and vertical direction, remotely controlled by infrared means. In order to reduce the speed, geared motors are used that are interfaced to the outputs of the microcontroller which are driven by a motor driver IC L293D.

One IR sensor (TSOP) is used to receive the remote commands which are fed to microcontroller that decodes the data to rotate the motor in the desired direction via motor driver IC. The power supply consists of a step down transformer 230/12V, which steps down the voltage to 12V AC. This is converted to DC using a Bridge rectifier. The ripples are removed using a capacitive filter and it is then regulated to +5V using a voltage regulator 7805 which is required for the operation of the microcontroller and other components. For more details visit www.efxkits.com or www.facebook.com/edgefx

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