Smart Electronics DC 0-25V szabványos feszültségérzékelő modul teszt elektronikus téglák Smart Robot az arduino barkácskészlethez
Smart Electronics DC 0-25V Standard Voltage Sensor Module Test Electronic Bricks Smart Robot for arduino Diy Kit
Module introduction:
Based on the principle of resistor voltage division, the module can reduce the input voltage of the terminal interface by five times. The Arduin analog input voltage is larger than 5V, so the input voltage of the voltage detection module should not be greater than 5V×5=25V (if the 3.3V system is used, the input voltage should not be greater than 3.3VX5 =16.5V). Because the AVR chip used by Arduino is a 10-bit AD, the analog resolution of this module is 0.00489V (5V/1023), so the voltage detection module detects the small input voltage of 0.00489V×5=0.02445V.
Parameters:
Voltage input range: DC0-25V
Voltage detection range: DC0.02445V-25V
Voltage analog resolution: 0.00489V
DC input interface: The positive terminal is connected to VCC and the negative terminal is connected to GND
Output interface: " " for 5/3.3V, "-" for GND, "S" for Arduin AD pin
 
Reference code:
#include
 
int val11;
int val2;
 
void setup()
{
pinMode(LED1,OUTPUT);
Serial.begin(9600);
Serial.println("Emartee.Com");
Serial.println("Voltage: ");
Serial.print("V");
}
void loop()
{
float temp;
val11=analogRead(1);
Temp = val11/4.092;
val11=(int)temp; //
val2=((val11% 100)/10);
Serial.println(val2);
delay(1000);
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