How to Use Motor + Canister CO2: Examples, Pinouts, and Specs

The Motor + Canister CO2 by Robo Marine Indonesia is a compact and efficient propulsion system designed for small-scale robotics and marine applications. This component integrates a motor with a CO2 canister to provide thrust, making it ideal for underwater vehicles, small boats, and other robotic systems requiring controlled propulsion. Its lightweight design and ease of integration make it a popular choice for hobbyists and professionals alike.

• Underwater drones and remotely operated vehicles (ROVs)
• Small-scale marine robotics
• Educational robotics projects
• Emergency flotation or propulsion systems
• Experimental propulsion systems for research

The motor has two terminals for electrical connections, and the CO2 canister is integrated into the system. Below is the pin configuration for the motor:

The CO2 canister does not require electrical connections but is activated mechanically when the motor is powered.

1. Power the Motor: Connect the motor terminals (V+ and V-) to a DC power source. Ensure the voltage is within the operating range (6V - 12V).
2. Secure the CO2 Canister: Attach the CO2 canister to the designated slot on the motor assembly. Ensure it is tightly secured to prevent leaks.
3. Control the Motor: Use a motor driver or an H-bridge circuit to control the motor's speed and direction. For Arduino users, a motor driver like the L298N is recommended.
4. Test the System: Once connected, test the motor and CO2 canister in a safe environment. Ensure proper ventilation when testing the CO2 system.

• Safety First: Always handle the CO2 canister with care. Avoid puncturing or exposing it to high temperatures.
• Voltage Regulation: Use a regulated power supply to prevent damage to the motor.
• Environmental Conditions: Avoid using the component in environments exceeding the specified temperature range.
• CO2 Refills: Replace the CO2 canister once depleted. Ensure compatibility with 16g canisters.

Below is an example of how to control the motor using an Arduino UNO and an L298N motor driver:

// Define motor control pins
const int motorPin1 = 9; // Connect to IN1 on L298N
const int motorPin2 = 10; // Connect to IN2 on L298N
const int enablePin = 11; // Connect to ENA on L298N

void setup() {
  // Set motor pins as outputs
  pinMode(motorPin1, OUTPUT);
  pinMode(motorPin2, OUTPUT);
  pinMode(enablePin, OUTPUT);

  // Initialize motor in stopped state
  digitalWrite(motorPin1, LOW);
  digitalWrite(motorPin2, LOW);
  analogWrite(enablePin, 0); // Set speed to 0
}

void loop() {
  // Example: Run motor forward at 50% speed
  digitalWrite(motorPin1, HIGH);
  digitalWrite(motorPin2, LOW);
  analogWrite(enablePin, 128); // 50% duty cycle

  delay(5000); // Run for 5 seconds

  // Stop the motor
  digitalWrite(motorPin1, LOW);
  digitalWrite(motorPin2, LOW);
  analogWrite(enablePin, 0);

  delay(2000); // Wait for 2 seconds
}

1. Motor Does Not Spin

   • Cause: Insufficient power supply or loose connections.
   • Solution: Check the power source and ensure all connections are secure.

2. CO2 Canister Does Not Release Thrust

   • Cause: Canister not properly secured or depleted.
   • Solution: Ensure the canister is tightly attached and replace it if empty.

3. Overheating

   • Cause: Prolonged operation at high current.
   • Solution: Operate the motor within the recommended voltage and current limits.

4. Irregular Thrust Output

   • Cause: CO2 canister valve malfunction.
   • Solution: Inspect the valve for blockages or damage and replace the canister if necessary.

Q: Can I use a higher voltage than 12V for the motor?
A: No, exceeding 12V may damage the motor and void the warranty.

Q: How do I know when the CO2 canister is empty?
A: The thrust output will decrease significantly. Replace the canister when this occurs.

Q: Is the component waterproof?
A: The motor is not waterproof, but it is designed for use in controlled environments. Ensure proper sealing if used underwater.

Q: Can I refill the CO2 canister?
A: The canister is not refillable. Use compatible 16g replacement canisters.

By following this documentation, you can effectively integrate and operate the Motor + Canister CO2 in your projects.