I have an issue when I use a relay with my ESP32. I have a project to measure current, voltage of 2 LEDs using 3 ina219 sensor and I also used a relay to turn on/off the LEDs. I used blynk iot platform to turn on/off the relay. The relay lights follow the command of the blynk but there is no clicking sound (i.e doesnt turn on/off). What seems to be the problem? Thanks in advance
Here is my code.
#define BLYNK_TEMPLATE_ID "TMPLhMKQW-Vm"
#define BLYNK_DEVICE_NAME "Quickstart Template"
#define BLYNK_AUTH_TOKEN "EvOP11uD9aKMTxeqcMwtcVs3u3gwSMl2"
#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
#include <Wire.h>
#include <Adafruit_INA219.h>
#include "Adafruit_GFX.h"
#include <Arduino.h>
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "New Beginnings";
char pass[] = "#tat@2022#";
Adafruit_INA219 ina2190(0x40);
Adafruit_INA219 ina2191(0x41);
Adafruit_INA219 ina2192(0x45);
BlynkTimer timer;
float tolerance = 0;
float difference = 0;
#define relay1_pin 2
#define relay2_pin 4
int relay1_state = 0;
int relay2_state = 0;
#define button1_vpin V1
#define button2_vpin V2
#define button3_vpin V3
#define button4_vpin V4
#define button5_vpin V5
BLYNK_CONNECTED() {
Blynk.syncVirtual(button1_vpin);
Blynk.syncVirtual(button2_vpin);
Blynk.syncVirtual(button3_vpin);
Blynk.syncVirtual(button4_vpin);
Blynk.syncVirtual(button5_vpin);
}
BLYNK_WRITE(button1_vpin) {
relay1_state = param.asInt();
digitalWrite(relay1_pin, relay1_state);
}
BLYNK_WRITE(button5_vpin) {
relay2_state = param.asInt();
digitalWrite(relay2_pin, relay2_state);
}
void setup(void)
{
Serial.begin(115200);
while (!Serial) {
// will pause Zero, Leonardo, etc until serial console opens
delay(1);
}
pinMode(relay1_pin, OUTPUT);
pinMode(relay2_pin, OUTPUT);
digitalWrite(relay1_pin, HIGH);
digitalWrite(relay2_pin, HIGH);
Serial.println("Hello!");
ina2190.begin();
ina2191.begin();
ina2192.begin();
Blynk.begin(auth, ssid, pass);
Serial.println("Measuring voltage and current with INA219 ...");
}
static float shuntvoltage1 = 0;
static float busvoltage1 = 0;
static float current_mA1 = 0;
static float loadvoltage1 = 0;
static float power_mW1 = 0;
static float shuntvoltage2 = 0;
static float busvoltage2 = 0;
static float current_mA2 = 0;
static float loadvoltage2 = 0;
static float power_mW2 = 0;
static float shuntvoltage3 = 0;
static float busvoltage3 = 0;
static float current_mA3 = 0;
static float loadvoltage3 = 0;
static float power_mW3 = 0;
void loop(void)
{
Blynk.run();
shuntvoltage1 = ina2190.getShuntVoltage_mV();
busvoltage1 = ina2190.getBusVoltage_V();
current_mA1 = ina2190.getCurrent_mA();
power_mW1 = ina2190.getPower_mW();
loadvoltage1 = busvoltage1 + (shuntvoltage1 / 1000);
shuntvoltage2 = ina2191.getShuntVoltage_mV();
busvoltage2 = ina2191.getBusVoltage_V();
current_mA2 = ina2191.getCurrent_mA();
power_mW2 = ina2191.getPower_mW();
loadvoltage2 = busvoltage2 + (shuntvoltage2 / 1000);
shuntvoltage3 = ina2192.getShuntVoltage_mV();
busvoltage3 = ina2192.getBusVoltage_V();
current_mA3 = ina2192.getCurrent_mA();
power_mW3 = ina2192.getPower_mW();
loadvoltage3 = busvoltage2 + (shuntvoltage2 / 1000);
timer.run();
Serial.print("Bus Voltage1: "); Serial.print(busvoltage1); Serial.println(" V");
Serial.print("Shunt Voltage1: "); Serial.print(shuntvoltage1); Serial.println(" mV");
Serial.print("Load Voltage1: "); Serial.print(loadvoltage1); Serial.println(" V");
Serial.print("Current1: "); Serial.print(current_mA1); Serial.println(" mA");
Serial.print("Power1: "); Serial.print(power_mW1); Serial.println(" mW");
Serial.println("");
Serial.print("Bus Voltage2: "); Serial.print(busvoltage2); Serial.println(" V");
Serial.print("Shunt Voltage2: "); Serial.print(shuntvoltage2); Serial.println(" mV");
Serial.print("Load Voltage2: "); Serial.print(loadvoltage2); Serial.println(" V");
Serial.print("Current2: "); Serial.print(current_mA2); Serial.println(" mA");
Serial.print("Power2: "); Serial.print(power_mW2); Serial.println(" mW");
Serial.println("");
Serial.print("Bus Voltage3: "); Serial.print(busvoltage3); Serial.println(" V");
Serial.print("Shunt Voltage3: "); Serial.print(shuntvoltage3); Serial.println(" mV");
Serial.print("Load Voltage3: "); Serial.print(loadvoltage3); Serial.println(" V");
Serial.print("Current3: "); Serial.print(current_mA3); Serial.println(" mA");
Serial.print("Power3: "); Serial.print(power_mW3); Serial.println(" mW");
Serial.println("");
difference = current_mA1 - current_mA2 - current_mA3;
tolerance = current_mA1*0.029;
if (difference > tolerance)
{
Serial.print("THEFT!!!");
Blynk.virtualWrite(V2, "THEFT");
}
else{
Serial.print("ALL OK");
Blynk.virtualWrite(V2, "ALL OK");
}
Blynk.virtualWrite(V3, power_mW1);
Blynk.virtualWrite(V4, power_mW2);
delay(1000);
}
