Question

A servomotor connected to PORTA1 is used to control opening a gate depends on reading input voltage range from 0−5 V connected on PORTA3. Design a circuit that controls the gate opening at each 1 V change green LED will blink ON for 500mSec and the gate will move one step starting by input reading 0 V, where the gate is closed and up to the 5 V input the gate will be fully opened. Write an AVR program using Atmega16 to implement the above system.

Answer 1

To control the gate opening based on voltage input, an AVR microcontroller and voltage comparator can be used. The program can blink the green LED and move the gate one step for every 1V change.

Step-by-step explanation:

To implement the system, you will need to use an AVR microcontroller, such as Atmega16, and connect a servomotor to PORTA1. The input voltage range from 0-5V will be read from PORTA3.

To control the gate opening at each 1V change, you can use a voltage comparator that compares the input voltage with different threshold voltages.

When the input voltage reaches a threshold (1V, 2V, 3V, etc.), the AVR program can turn on the green LED for 500 milliseconds and move the gate one step.