AC live wire detector
This is simplest live wire detector circuit.
It can run by 6 to 12v and consume low current.
You can add a buzzer to the circuit.
The areal must be a small wire with plastic shell. the circuit have high sensitivity.
Arduino 220V AC Power meter using PZEM004T
Arduino 220V AC Power meter using PZEM004T Library : https://github.com/olehs/PZEM004T Part list: Arduino board LCD 16x2 PZEM004T module Resistor 220 ohm Potentiometer 10K Video: CODE: #include <SoftwareSerial.h> // Arduino IDE <1.6.6 #include <PZEM004T.h> #include <LiquidCrystal.h> LiquidCrystal lcd(7, 8, 9, 10, 11, 12); PZEM004T pzem(2,3); // (RX,TX) connect to TX,RX of PZEM IPAddress ip(192,168,1,1); void setup() { Serial.begin(9600); pzem.setAddress(ip); lcd.begin(16, 2); // lcd rows and columns } void loop() { float v = pzem.voltage(ip); if (v < 0.0) v = 0.0; Serial.print(v);Serial.print("V; "); lcd.setCursor(0,0); lcd.print("V= "); lcd.setCursor(2,0); lcd.print(v); float i = pzem.current(ip); if (i < 0.0) i = 0.0; Serial.print(i);Serial.print("A; "); lcd.setCursor(9,0); lcd.print("A= "); lcd.setCursor(11,0); ...
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