Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller interfacing with an HC-SR04 Ultrasonic Sensor, a DC Motor driven by an L298P drive shield, and three LEDs (green, yellow, and red) each connected through a 220 Ohm resistor. The circuit is powered by a 9V battery connected through a power jack.

Component List

1. Arduino UNO

   • Description: A microcontroller board based on the ATmega328P.
   • Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

2. L298P drive shield

   • Description: A dual full-bridge driver designed to drive inductive loads such as relays, solenoids, DC and stepping motors.
   • Pins: B-, B+, A-, A+, GND, VIN

3. DC Motor

   • Description: A simple DC motor.
   • Pins: pin 1, pin 2

4. LED: Two Pin (green)

   • Description: A green LED.
   • Pins: cathode, anode

5. LED: Two Pin (yellow)

   • Description: A yellow LED.
   • Pins: cathode, anode

6. LED: Two Pin (red)

   • Description: A red LED.
   • Pins: cathode, anode

7. Resistor (220 Ohms)

   • Description: A resistor with a resistance of 220 Ohms.
   • Pins: pin1, pin2

8. HC-SR04 Ultrasonic Sensor

   • Description: An ultrasonic sensor for distance measurement.
   • Pins: VCC, TRIG, ECHO, GND

9. Power jack

   • Description: A power jack for connecting the 9V battery.
   • Pins: POSITIF, NEGATIF

10. 9V Battery

    • Description: A 9V battery for powering the circuit.
    • Pins: +, -

Wiring Details

Arduino UNO

• 5V to VCC of HC-SR04 Ultrasonic Sensor
• D3 to TRIG of HC-SR04 Ultrasonic Sensor
• D2 to ECHO of HC-SR04 Ultrasonic Sensor
• GND to GND of HC-SR04 Ultrasonic Sensor, cathode of green LED, cathode of yellow LED, cathode of red LED
• D5 to pin2 of Resistor (connected to red LED)
• D6 to pin2 of Resistor (connected to yellow LED)
• D7 to pin2 of Resistor (connected to green LED)

L298P drive shield

• A- to pin 2 of DC Motor
• A+ to pin 1 of DC Motor

HC-SR04 Ultrasonic Sensor

• VCC to 5V of Arduino UNO
• TRIG to D3 of Arduino UNO
• ECHO to D2 of Arduino UNO
• GND to GND of Arduino UNO, cathode of green LED, cathode of yellow LED, cathode of red LED

DC Motor

• pin 1 to A+ of L298P drive shield
• pin 2 to A- of L298P drive shield

LED: Two Pin (green)

• cathode to GND of Arduino UNO
• anode to pin1 of Resistor (220 Ohms)

LED: Two Pin (yellow)

• cathode to GND of Arduino UNO
• anode to pin1 of Resistor (220 Ohms)

LED: Two Pin (red)

• cathode to GND of Arduino UNO
• anode to pin1 of Resistor (220 Ohms)

Resistor (220 Ohms)

• pin1 to anode of respective LED
• pin2 to D5 (red LED), D6 (yellow LED), D7 (green LED) of Arduino UNO

Power jack

• POSITIF to + of 9V Battery
• NEGATIF to - of 9V Battery

9V Battery

• + to POSITIF of Power jack
• - to NEGATIF of Power jack

Documented Code

Arduino UNO Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Additional Documentation (documentation.txt)