hello.. i'm working with two ina219 sensors for my final assigment at college. i soldered one sensor A0 bridge so i can get different address. now i got 0x40 and 0x41. when i try to read the sensors without load, one sensor (0x40) seems working but the other (0x41) whenever i try to connect with load or not its always read 0 to all variable. i dont understand how to use wire library, if it must use that to get the data from sensor B. can someone help me?
here is my code
#include <Wire.h>
#include <Adafruit_INA219.h>
Adafruit_INA219 ina219_A;
Adafruit_INA219 ina219_B(0x41);
void setup()
{
Serial.begin(9600);
Serial.println("Measuring voltage and current with INA219 ...");
ina219_A.begin();
ina219_B.begin();
}
void loop()
{
float shuntvoltage_A = 0;
float busvoltage_A = 0;
float current_mA_A = 0;
float loadvoltage_A = 0;
float power_A = 0;
float shuntvoltage_B = 0;
float busvoltage_B = 0;
float current_mA_B = 0;
float loadvoltage_B = 0;
float power_B = 0;
shuntvoltage_A = ina219_A.getShuntVoltage_mV();
busvoltage_A = ina219_A.getBusVoltage_V();
current_mA_A = ina219_A.getCurrent_mA();
loadvoltage_A = busvoltage_A + (shuntvoltage_A / 1000);
power_A = current_mA_A * loadvoltage_A;
shuntvoltage_B = ina219_B.getShuntVoltage_mV();
busvoltage_B = ina219_B.getBusVoltage_V();
current_mA_B = ina219_B.getCurrent_mA();
loadvoltage_B = busvoltage_B + (shuntvoltage_B / 1000);
power_B = current_mA_B * loadvoltage_B;
Serial.print("Bus Voltage_A: "); Serial.print(busvoltage_A); Serial.println(" V");
Serial.print("Shunt Voltage_A: "); Serial.print(shuntvoltage_A); Serial.println(" mV");
Serial.print("Load Voltage_A: "); Serial.print(loadvoltage_A); Serial.println(" V");
Serial.print("Current_A: "); Serial.print(current_mA_A); Serial.println(" mA");
Serial.print("Power_A: "); Serial.print(power_A); Serial.println(" mW");
Serial.println("***********************************************");
Serial.print("Bus Voltage_B: "); Serial.print(busvoltage_B); Serial.println(" V");
Serial.print("Shunt Voltage_B: "); Serial.print(shuntvoltage_B); Serial.println(" mV");
Serial.print("Load Voltage_B: "); Serial.print(loadvoltage_B); Serial.println(" V");
Serial.print("Current_B: "); Serial.print(current_mA_B); Serial.println(" mA");
Serial.print("Power_B: "); Serial.print(power_B); Serial.println(" mW");
Serial.println("***********************************************");
delay(1000);
}
