ESP8266 Community Forum

- Wed Jan 25, 2017 4:29 am #61497 Hi, i bought an esp8266 with the adapter for arduino (http://www.ebay.it/itm/Modulo-ESP-01S-E ... SwNRdX7NpI), but i am no able to send AT commands or anything else to it.
If i load an empty sketch and open the serial monitor, i can send AT commands and see the response, but if i try to use some very simple code to send commands, nothing happens, neither the blue light blink. So this means that arduino doesn't send anything via serial pins.
I tried this:

Code: Select allvoid setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  Serial.println("AT");
}


And this:

Code: Select all#inport<SoftwareSerial.h>
SoftwareSerial wifi(3,4);
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  wifi.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
 
  wifi.println("AT");
  Serial.println("AT");
  while(wifi.available() > 0){
    Serial.print(wifi.read());
  }
}


I also tried using a power supply for esp8266, but in this case i was not able to send commands neither using an empty sketch and the serial monitor. I can only see the response of esp when i turn it on, but i cannot send anything (it is like only RX works if i don't use the arduino 5V power).

Can someone help me please?