Introduction This module is based on a resistive divider design principles, can reduce the voltage of the input terminal connection five times, analog input voltage up to 5V, then the input voltage of the voltage detection module can not be greater than 5V × 5 = 25V (3.3V if used system, the input voltage does not exceed 3.3Vx5 = 16.5V). Because AVR chips used in 10 AD, so the simulation resolution of this module is 0.00489V (5V / 1023), so the voltage detection module detects minimum input voltage is 0.00489V × 5 = 0.02445V. Parameters:
- Input voltage range: DC0-25V
- Voltage detection range: DC0.02445V-25V
- Voltage analog resolutions: 0.00489V
- DC Input: positive terminal connected to VCC, GND negative pole
- Output interface: "+" then 5 / 3.3V, "-" then GND, "s" then the AD pin
Shipping List - Voltage Sensor Module: 1pcs
Reference Code: #include <Wire.h> 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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