Hello! I'm sorry to hear that you're having trouble getting Blynk IOT to work via Serial USB. Here are some suggestions that might help you:
1. Make sure that you have installed the Blynk library properly in your Arduino IDE. You can check this by going to Sketch > Include Library > Manage Libraries and then searching for "Blynk". Make sure that the library is installed and up to date.
2. Check your wiring connections. Make sure that your Arduino board is connected to your computer via USB and that your sensors are properly connected to your board.
3. Double-check your code. Make sure that you have set up your Blynk widgets and virtual pins correctly. Also, make sure that you have included the necessary Blynk and Wi-Fi credentials in your code.
4. Try using the Blynk app instead of Serial USB. You can download the app on your smartphone or tablet and then connect it to your Arduino board via Wi-Fi. This method is usually more reliable and easier to use.
As for displaying the date and time when smoke is detected, you can use an RTC (Real Time Clock) module to keep track of the time. You can then display the time on your Blynk app using a Timer widget. Here's an example code:
Code:
#include <Wire.h>
#include <RTClib.h>
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
char auth[] = "your_blynk_auth_token";
char ssid[] = "your_wifi_ssid";
char pass[] = "your_wifi_password";
RTC_DS1307 rtc;
BlynkTimer timer;
void setup() {
Serial.begin(9600);
Blynk.begin(auth, ssid, pass);
Wire.begin();
rtc.begin();
timer.setInterval(1000L, displayTime); // update time every second
}
void loop() {
Blynk.run();
timer.run();
}
void displayTime() {
DateTime now = rtc.now();
String time = String(now.hour()) + ":" + String(now.minute()) + ":" + String(now.second());
Blynk.virtualWrite(V1, time); // display time on V1 widget
}
void detectSmoke() {
// code to detect smoke
// if smoke is detected, display the time
displayTime();
}
In this example code, the RTC module is connected to the I2C pins of the Arduino board. The
displayTime()
function gets the current time from the RTC module and then sends it to the Blynk app using the
Blynk.virtualWrite()
function. You can call this function whenever smoke is detected in your
detectSmoke()
function.