Google Code-in

General Purpose Input/Output pins are the bridge to interface with the real-world environment. There are various options for both Input and Output as listed below: Input:

          * Temperature and Humidity (DHT11)
          * Photo-resistor
          * Infrared (M395)
          * Passive Infrared Motion sensor
          * Gas/Smoke/Alcohol (check out MQ series of sensors)
          * Real Time Clock (RTC) -(DS1307)
          * Ultrasonic Sensor (HC-SR04)

Output:

          * DC Motor
          * Servo Motor
          * Relay

In this task, you can take any board of your choice (boards from ESP family/boards from Arduino family/Raspberry-pi family/Breadware boards/or any micro-controller) and interface the above I/O with the board.

Deliverables: Share the code, screen-shot of Serial Monitor, circuit diagram and the photo of your constructed circuit.

• Minimum four inputs