How to Use Power Profiler Kit II: Examples, Pinouts, and Specs

The Power Profiler Kit II (PPK-2) by Nordic is a versatile tool designed for measuring and optimizing the power consumption of embedded and IoT devices. It provides detailed power consumption data, enabling developers to fine-tune their designs for energy efficiency. The PPK-2 supports both USB and external power sources, making it a flexible solution for various development environments.

• Embedded Systems Development: Optimize power consumption in microcontroller-based projects.
• IoT Device Testing: Measure and analyze power usage in IoT devices to extend battery life.
• Wearable Technology: Ensure low power consumption in wearable devices for prolonged usage.
• Battery-Powered Devices: Evaluate and improve the energy efficiency of battery-operated gadgets.

1. Connect the PPK-2 to Your Target Device:

   • Connect the VOUT pin to the power input of your target device.
   • Connect the GND pin to the ground of your target device.

2. Power the PPK-2:

   • Use the USB port to connect the PPK-2 to your computer for power and data transfer.
   • Alternatively, connect an external power source to the VIN pin if required.

3. Install the Necessary Software:

   • Download and install the Power Profiler software from the Nordic website.
   • Follow the installation instructions provided in the software documentation.

4. Start Measuring:

   • Launch the Power Profiler software on your computer.
   • Select the appropriate settings for your measurement (e.g., voltage range, sampling rate).
   • Begin the measurement process and observe the power consumption data in real-time.

• Ensure Proper Connections: Double-check all connections to avoid short circuits or incorrect measurements.
• Use Stable Power Sources: For accurate measurements, use stable and noise-free power sources.
• Calibrate Regularly: Periodically calibrate the PPK-2 to maintain measurement accuracy.
• Avoid Overloading: Do not exceed the maximum current rating of 1A to prevent damage to the PPK-2.

1. No Power Measurement Data:

   • Solution: Ensure that the PPK-2 is properly connected to both the target device and the power source. Verify that the Power Profiler software is correctly installed and configured.

2. Inaccurate Measurements:

   • Solution: Calibrate the PPK-2 using the calibration procedure provided in the software documentation. Ensure that the power source is stable and free from noise.

3. Device Not Recognized by Computer:

   • Solution: Check the USB connection and ensure that the correct drivers are installed. Try using a different USB port or cable.

Q: Can the PPK-2 measure power consumption of devices operating at voltages below 0.8V?

• A: No, the PPK-2 is designed to measure voltages in the range of 0.8V to 5.0V.

Q: Is it possible to use the PPK-2 with an Arduino UNO?

• A: Yes, the PPK-2 can be used to measure the power consumption of an Arduino UNO. Connect the VOUT pin to the 5V input of the Arduino and the GND pin to the ground.

Q: How often should I calibrate the PPK-2?

• A: It is recommended to calibrate the PPK-2 before each measurement session or whenever you notice discrepancies in the measurement data.

Below is an example code to measure the power consumption of an Arduino UNO using the PPK-2:

// Example code to measure power consumption of an Arduino UNO
// using the Power Profiler Kit II (PPK-2)

// This code toggles an LED on and off to create a measurable
// power consumption pattern.

const int ledPin = 13; // Pin connected to the onboard LED

void setup() {
  pinMode(ledPin, OUTPUT); // Set the LED pin as an output
}

void loop() {
  digitalWrite(ledPin, HIGH); // Turn the LED on
  delay(1000);                // Wait for 1 second
  digitalWrite(ledPin, LOW);  // Turn the LED off
  delay(1000);                // Wait for 1 second
}

This code will toggle the onboard LED of the Arduino UNO on and off every second, creating a measurable power consumption pattern that can be observed using the PPK-2.

By following this documentation, users can effectively utilize the Power Profiler Kit II (PPK-2) to measure and optimize the power consumption of their embedded and IoT devices.