INA219 Breakout Board High Side DC Current Sensor – 26V + -3.2A max

Description

What it is

The INA219 Breakout is a DC current sensor that allows the measurement of current on high voltage systems up to 26V. This device enables the monitoring of current flows in electronic projects, providing precise data.

Features

• Maximum operating voltage: 26V
• Maximum measurable current: ±3.2A
• Ideally compatible with Arduino and similar systems

What it is for

The INA219 Breakout is used to monitor currents in power supply projects, such as drones or other electronic devices. It can be easily integrated with Arduino for current data collection and analysis.

Tutorial: How to use INA219 Breakout High Side DC Current Sensor

The INA219 sensor allows the measurement of DC currents up to 3.2 A with precision. Ideal for electronic projects and current monitoring in power supply systems.

What you need

• INA219 Breakout
• Arduino or compatible microcontroller
• 0.1 Ω resistor (optional)
• Multimeter (to verify measurements)

Steps

1. 1. Connect the INA219 to the microcontroller using the following pins: VCC to 5V, GND to GND, SDA to the SDA pin, SCL to the SCL pin.
2. 2. Optional: connect a 0.1 Ω resistor between the power supply and ground to improve accuracy.
3. 3. Load the provided Arduino code.
4. 4. Check the datasheet for reference voltage values.
5. 5. Run the code and check the measurements with the multimeter.
6. 6. Configure the sensor through I2C registers.
7. 7. Use the current calculation function.
8. 8. Test the sensor with different currents.

Example code

void loop() {   // leggi il valore di corrente e stampa su serial   Serial.println(ina219.readShuntVoltage_mV());   delay(1000); }

Mini project

Create a current monitoring system for a drone power supply. In 30 minutes, you can mount the INA219, connect it to the Arduino, and test the measurements.

Common mistakes

• Do not connect VCC to a power supply higher than 26 V.
• Ensure proper I2C configuration.
• Check for a short circuit with the 0.1 Ω resistor.
• Check the orientation of the sensor.

Recommended accessories

• Arduino Nano
• 0.1 Ω Resistor
• Multimeter
• I2C Cable

Frequently asked questions

How can I check for a short circuit?
Check the resistance between the power supply and ground with a multimeter.

What is the reference voltage for the sensor?
Verify the reference voltage values in the datasheet.

Can I use this sensor with a different microcontroller?
The sensor supports various I2C configurations, check compatibility in the datasheet.