kw alarm

[goku75]

I can not set kw alarm. Can you have an example of how to do this?

[olehs]

Hi. There is setPowerAlarm method. You can use it like this
pzem.setPowerAlarm(ip, 20);

Maximum threshold is 22kW

[olehs]

btw, how are you going to use this alarm?

[goku75]

To communicate i used arduino mega. But now the only thing I care about is that it is when I overtake the 3 kw of absorption.

[olehs]

According to docs, PZEM's screen flashes when power is over threshold. But PZEM004T doesn't have a screen. This is why I wonder).
But you can check power in your Arduino sketch by yourself.

[vortigont]

There is a version with screen and it blinks indeed. There is also a place and pads for buzzer on the PCB inside, so maybe it can even make some noise )

[goku75]

I have the model with led screen and buzzer. I need the mega arduin program to set power-arm to 3 kw. Already I now read arduino values.

[goku75]

I use this to read the data:
#include <SoftwareSerial.h> // Arduino IDE <1.6.6
#include <PZEM004T.h>

PZEM004T pzem(10,11); // RX,TX
IPAddress ip(192,168,1,1);

void setup() {
Serial.begin(9600);
Serial1.begin(9600);
pzem.setAddress(ip);
}

void loop() {
float v = pzem.voltage(ip);
if (v < 0.0) v = 0.0;
Serial.print(v);Serial1.print("V; ");

float i = pzem.current(ip);
if(i >= 0.0){ Serial1.print(i);Serial1.print("A; "); }

float p = pzem.power(ip);
if(p >= 0.0){ Serial1.print(p);Serial1.print("W; "); }

float e = pzem.energy(ip);
if(e >= 0.0){ Serial1.print(e);Serial1.print("Wh; "); }

Serial1.println();

// delay(1000);
}

[goku75]

How do I enter this?
pzem.setPowerAlarm(ip, 20);

for 3kw

[olehs]

add this at the end of setup()
pzem.setPowerAlarm(ip, 3);

[goku75]

Ok it works, the display blinks exceeded the 3 kw but does not sound :(
I'll check.
thank you