How to Use Micro USB to Cable (2 Pin): Examples, Pinouts, and Specs

The Micro USB to 2-Pin Cable Connector is a versatile and commonly used electronic component that serves as a bridge between a micro USB power source and devices with a 2-pin interface. This cable is particularly useful for powering a wide range of electronic devices, such as development boards, small electronics projects, and battery chargers.

• Powering microcontroller boards (e.g., Arduino, Raspberry Pi)
• Charging battery-powered devices
• Providing power to custom electronics projects
• Connecting to breadboards for prototyping

• Voltage Rating: Typically 5V (from standard USB ports)
• Current Rating: Up to 2A (depending on cable gauge)
• Cable Length: Varies (common lengths include 0.5m, 1m, 2m)
• Micro USB Connector: USB 2.0 Micro-B male
• 2-Pin Connector: Generic 2-pin, pitch may vary

1. Connecting to a Power Source:
   • Insert the Micro USB end of the cable into a compatible USB power adapter or USB port.
2. Connecting to a Device:
   • Connect the 2-pin end to the device's power input, ensuring correct polarity. The VCC and GND should match the device's power and ground pins.

• Polarity: Always check the polarity of the 2-pin connector before connecting to your device. Reversing the polarity could damage the device.
• Power Rating: Do not exceed the current rating of the cable. Overloading the cable can cause overheating and potential failure.
• Cable Length: Be aware that longer cables can result in a voltage drop. Choose an appropriate cable length for your application.
• Connection Quality: Ensure that the connections are firm and secure to prevent intermittent power supply.

• Device Not Powering On: Check the connections and ensure the USB power source is active.
• Intermittent Power: Inspect the cable for any physical damage or loose connections.

• Polarity Check: Use a multimeter to verify the polarity of the 2-pin connector before connecting to your device.
• Power Source Verification: Confirm that the USB power source is supplying the correct voltage and current.
• Cable Inspection: Look for any signs of wear, tear, or damage to the cable. Replace if necessary.

• Q: Can I use this cable to transfer data?
  • A: No, this cable is designed for power connections only and does not support data transfer.
• Q: What should I do if the cable gets hot during use?
  • A: Unplug the cable immediately and check if the current draw of your device is within the cable's rating. If the current draw is appropriate, the cable may be faulty.

// This example demonstrates how to power an Arduino UNO using the Micro USB to 2-Pin Cable.
// No additional code is required for power connection.

void setup() {
  // Initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  // Turn the LED on (HIGH is the voltage level)
  digitalWrite(LED_BUILTIN, HIGH);
  // Wait for a second
  delay(1000);
  // Turn the LED off by making the voltage LOW
  digitalWrite(LED_BUILTIN, LOW);
   // Wait for a second
  delay(1000);
}

// Note: The above code is for demonstration purposes only. The actual implementation
// may vary depending on the specific application and device requirements.

Note: The Arduino UNO can be powered through its 2-pin VIN and GND connections using the Micro USB to 2-Pin Cable, provided the power source is compatible with the Arduino's voltage and current requirements. Always refer to the Arduino UNO's specifications for proper power supply parameters.