Voltage and Current Sensor

Description:

• This module can be used to test the current and voltage
• The principle of voltage test based on principle of resistive voltage divider design, can make the red terminal connector input voltage to 5 times smaller
• For Arduino analog input voltages up to 5 v, the voltage detection module input voltage not greater than 5Vx5=25V (if using 3.3V systems, input voltage not greater than 3.3Vx5=16.5V). For Arduino AVR chips have 10-bit AD, so this module simulates a resolution of 0.00489V (5V/1023), so the minimum voltage of input voltage detection module is 0.00489Vx5=0.02445V
• The MAX471 chip on the board used to test the consume current of the load
• Test Voltage range: DC 3 - 25V (for Arduino work on 5V) or DC3 - 16.5V (for Arduino work on 3.3V)
• Test Current range: DC 0 - 3A
• PCB Size: 22*21*7mm/0.86*0.82*0.27"
  
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Coder ตัวอย่าง Download # Arduino Code (*.ino file)

/* Connection pins:

Arduino     Current Sensor B43

A0                  VT

A1                  AT

+5V                 VIN

+5V                 VOUT

GND                 GND

*/

#include

#define VT_PIN A0 // connect VT

#define AT_PIN A1// connect AT

#define ARDUINO_WORK_VOLTAGE 5.0

void setup()

{

  Serial.begin(9600);

  Serial.println("Voltage (V) / Current (A)");

}

void loop()

{

  int vt_temp = analogRead(VT_PIN);

  int at_temp = analogRead(AT_PIN);

  double voltage = vt_temp * (ARDUINO_WORK_VOLTAGE / 1023.0) * 5;

  double current = at_temp * (ARDUINO_WORK_VOLTAGE / 1023.0);

  Serial.print("Analog0: "); Serial.print(vt_temp); Serial.print(" / "); Serial.print("Analog1: "); Serial.print(at_temp);  Serial.print(" ----- "); 

  Serial.print(voltage); Serial.print(" / "); Serial.println(current);

  delay(1000);

}