This instructable is regarding the interface of IR sensor and buzzer to the Arduino in such a way that it works as obstacle detection circuit.
Step 1: Getting Started
This is my first instructable for obstacle detection.I have used two IR sensor and an arduino to make a circuit which sense obstacle coming in its path.The two IR sensor is such calibrated that any of the two output is one the the buzzer turns on.such a device can be use in doors ,when there is someone at the door the buzzer beeps.
Step 2: Components
The following components are needed
- Arduino any model (here I have used Arduino Diecimila)
- IR sensors
- connecting wires
- Arduino programming software
The above components are easily available in market.
Step 3: Circuit Making
Connect the circuit as shown in figure
In the circuit the two output of IR sensors are connected to the analog pins A0 & A1 of arduino. I have used digital pins 3,4 for +vcc of IT sensor. The digital pin 2 works as the input to the buzzer.
The program compares the output from the sensors an if result is greater than 0 the buzzer is turned on simple!!!!!!!!
The sensor range can be increased with the help of proper calibration
Please do find the C programming .