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This tutorial is for a simple arduino "animal" to react in different ways based on distance.
this project will use 10 different compoents: 1. an Arduino uno 2 a breadboard 3. a HC-SR04 distance sensor 4. a servo 5. 3 leds 6.a piezo buzzer 7. a seven segment lcd display 8. a membrane keypad 4*4 9. jumper wire 10. resistors