Question

Design a toy for a 3 year old boy using a 2x2 keypad, led's, buzzers, and a stepper motor. Each key in the keypad is connected with one
prerecorded sound and one direction of motion. With a proper stator diagram and logic table for each pulse explain the stepper motor. With a
neat necessary pinout diagram, write an embedded program to achieve the same. On the keypad, if the key no.1 is pressed a buzzeri
(prerecorded sound will be played in the actual toy) should be ON and the toy should rotate clockwise (FULL Stepper Mode) 10 times. If the
key no.2 is pressed, then the led should be blinking with some delay and rotate clockwise (HALF Stepper Mode) 10 times. If Key no.3 is
pressed, then buzzer 1 should be turned OFF and rotate anticlockwise (FULL Drive Mode) 10 times. If Key no.4 is pressed, then the LED
should be ON for each subsequent step and OFF for the other steps when the motor is running anticlockwise in HALF drive mode for 15 times
The stepper motor should be designed with 4 stators.​

Answer 1

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