My ESP-01 is not respoding with Arduino mega

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,
1

I’m doing a project with esp - 01 and arduino mega, but when i upload and opened my serial monitor appeared " [1609] ESP is not responding". My ESP firmware is At version: 1.1.0.0; SDK version: 1.5.4 (this version came with the ESP) I read that this is the version that blynk tested, so i do not know what is the problem with my project.
Another information:

  • I’m using ESP-01 Adatper
  • My connections are:
    gnd → gnd
    vcc → 5v
    tx → tx1 18
    rx → rx1 19
2

Isn’t ESP-01 running on 3.3 V? :thinking:

Anyhow, search the forum. Similar questions have been asked and answered many times before! :slight_smile:

3

What does your serial monitor show?

Pete.

5

serial monitor
serial monitor856×372 9.58 KB

This is my serial monitor

6

i’m using the adapter to connect directly on 5v

7

The Tx pin on the board has to go to the Rx pin on the ESP-01 and vice-versa.

Pete.

8

thanks, but i changed and keep showing up the same error

9

I’d suggest that you post your full sketch, correctly formatted with triple backticks at the beginning and end of the code.
Triple backticks look like this:
```

Pete.

10

Okay, follow my code:



#include <ESP8266_Lib.h>
#include <BlynkSimpleShieldEsp8266.h>

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "dpIzSePNszzISpUPC60J58lUfoaB8xAe";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "MARTINI";
char pass[] = "FSBTmartini";

// Hardware Serial on Mega, Leonardo, Micro...
#define EspSerial Serial1

// or Software Serial on Uno, Nano...
//#include <SoftwareSerial.h>
//SoftwareSerial EspSerial(2, 3); // RX, TX

// Your ESP8266 baud rate:
#define ESP8266_BAUD 38400

ESP8266 wifi(&EspSerial);

BlynkTimer timer;

// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void myTimerEvent()
{
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V5, millis() / 1000);
}

void setup()
{
  // Debug console
  Serial.begin(9600);

  // Set ESP8266 baud rate
  EspSerial.begin(ESP8266_BAUD);
  delay(10);

  Blynk.begin(auth, wifi, ssid, pass);
  // You can also specify server:
  //Blynk.begin(auth, wifi, ssid, pass, "blynk-cloud.com", 80);
  //Blynk.begin(auth, wifi, ssid, pass, IPAddress(192,168,1,100), 8080);

  // Setup a function to be called every second
  timer.setInterval(1000L, myTimerEvent);
}

void loop()
{
  Blynk.run();
  timer.run(); // Initiates BlynkTimer
}```
11

Is this the baud rate that your ESP is actually using?

Pete.

12

isn’t, is 115200, i changed and now it’s working. thank you for helping.

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