How to Use DC-DC Power converter with display: Examples, Pinouts, and Specs

The AZDelivery HW-140 is a versatile DC-DC power converter designed to convert a source of direct current (DC) from one voltage level to another. This component is particularly useful in applications where different parts of a system require different voltage levels. The integrated display allows for real-time monitoring of output voltage and current, making it an excellent choice for both hobbyists and professionals.

• Battery-Powered Projects: Adjusting voltage levels to match the requirements of different components.
• Arduino Projects: Providing stable voltage to microcontrollers and sensors.
• Portable Electronics: Powering devices with varying voltage needs from a single battery source.
• Prototyping and Testing: Easily adjusting voltage levels for different test scenarios.

1. Connect the Input Voltage:

   • Connect the positive terminal of your DC power source to the IN+ pin.
   • Connect the negative terminal of your DC power source to the IN- pin.

2. Connect the Output Voltage:

   • Connect the OUT+ pin to the positive terminal of the load.
   • Connect the OUT- pin to the negative terminal of the load.

3. Adjust the Output Voltage:

   • Use the potentiometer labeled ADJ to adjust the output voltage. Turn clockwise to increase the voltage and counterclockwise to decrease it.

4. Monitor the Display:

   • The integrated 7-segment LED display will show the output voltage and current, allowing for real-time monitoring.

• Heat Dissipation: Ensure adequate ventilation or heat sinking, especially when operating at higher currents.
• Input Voltage: Always ensure the input voltage is within the specified range (4.0V to 40V).
• Polarity: Double-check the polarity of your connections to avoid damaging the converter.
• Load Requirements: Ensure the load does not exceed the maximum current rating (2A continuous, 3A peak).

1. No Display or Output:

   • Check Connections: Ensure all connections are secure and correctly oriented.
   • Input Voltage: Verify that the input voltage is within the specified range.

2. Output Voltage Not Adjustable:

   • Potentiometer: Ensure the potentiometer is functioning correctly and not damaged.
   • Load: Check if the load is within the acceptable range.

3. Overheating:

   • Ventilation: Ensure the converter has adequate ventilation.
   • Current Load: Verify that the current load does not exceed the maximum rating.

Q: Can I use this converter with an Arduino UNO? A: Yes, the HW-140 can be used to provide a stable voltage to an Arduino UNO. Ensure the output voltage is set to 5V or 3.3V as required by the Arduino.

Q: How do I know if the converter is overloaded? A: The display will show the output current. If it exceeds 2A continuously or 3A peak, the converter is overloaded.

Q: Can I use this converter to charge batteries? A: Yes, but ensure the output voltage and current are set according to the battery specifications to avoid damage.

Here is an example of how to use the HW-140 to power an Arduino UNO:

// Example code to read analog sensor data and print to Serial Monitor

const int sensorPin = A0; // Analog input pin for the sensor
int sensorValue = 0;      // Variable to store the sensor value

void setup() {
  Serial.begin(9600); // Initialize serial communication at 9600 baud
}

void loop() {
  sensorValue = analogRead(sensorPin); // Read the sensor value
  Serial.print("Sensor Value: ");
  Serial.println(sensorValue); // Print the sensor value to the Serial Monitor
  delay(1000); // Wait for 1 second before the next reading
}

In this example, the HW-140 is used to provide a stable 5V to the Arduino UNO, which reads an analog sensor value and prints it to the Serial Monitor.

By following this documentation, users can effectively utilize the AZDelivery HW-140 DC-DC power converter in their projects, ensuring reliable and adjustable power supply with real-time monitoring.