Product Overview
Product Description:
ESP8266 is an inexpensive
serial-to-wifi transceiver chip that can be used to connect any microcontroller
with a serial port to a WiFi network. Because of its simplicity and low cost,
it is getting popular among hobbyists for implementing it in Internet of Things
(IoT) applications. ESP-01 module provides access to the power supply and I/O
pins of ESP8266 through a 2x4 male header. But the pin arrangements are not user
friendly. This “ESP8266 ESP-01 Wifi Mini Development Board” has a 6 Pins L-Shape Male header for Programming
that directly connects to FTDI USB to
Serial Converter 3V3.
Other 4 Pins are Yellow Male header for 3.3V, GND, GPIO2 and GPIO0. There’s
also Flash and Reset Switch.
Features:
·
Switch
for Flash Mode
·
Reset
Switch
·
Indication
LED: GPIO0 (Green) & GPIO2 (Red)
·
Output
Header 4 Pin for 3.3V, GND, GPIO2 and GPIO0
Specifications:
·
Chip:
ESP8266 ESP-01
·
Memory:
1MB Flash Memory
·
Interface:
Serial Communication (RX, TX)
·
Baud
Rate: 115200 (Default)
·
Board
dimension: 44mm x 26mm
·
Working
Voltage: 3.3V (DC)
Working
Process:
·
“ESP8266 ESP-01
Wifi Mini Development Board” Connect with PC using by FTDI USB to
Serial Converter 3V3
· At first press the Flash button and Hold on, then press the Reset button. (If green LED glow, now it is Programming Mode).
· Now upload your sketch file.
Example Code:
#include <ESP8266WiFi.h>
const char* ssid = "Your Network ID";
const char* password = "Password";
int ledPin = 2; /* GPIO2 */
WiFiServer server(80);
void setup() {
Serial.begin(115200);
delay(10);
pinMode(ledPin, OUTPUT);
digitalWrite(ledPin, HIGH);
/* Connect to WiFi
network */
Serial.println();
Serial.println();
Serial.print("Connecting to
");
Serial.println(ssid);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi
connected");
/* Start the server */
server.begin();
Serial.println("Server
started");
// Print the IP
address
Serial.print("Use this URL to
connect: ");
Serial.print("http://");
Serial.print(WiFi.localIP());
Serial.println("/");
}
void loop() {
/* Check if a client
has connected */
WiFiClient client = server.available();
if (!client) {
return;
}
/* Wait until the
client sends some data */
Serial.println("new client");
while(!client.available()){
delay(1);
}
/* Read the first line
of the request */
String request = client.readStringUntil('\r');
Serial.println(request);
client.flush();
/* Match the request
*/
int value = HIGH;
if (request.indexOf("/LED=ON") != -1) {
digitalWrite(ledPin, LOW);
value = LOW;
}
if (request.indexOf("/LED=OFF") != -1) {
digitalWrite(ledPin, HIGH);
value = HIGH;
}
/* Set ledPin
according to the request
digitalWrite(ledPin, value); */
/* Return the response
*/
client.println("HTTP/1.1 200
OK");
client.println("Content-Type:
text/html");
client.println(""); // do not forget this one
client.println("<!DOCTYPE
HTML>");
client.println("<html>");
client.print("LED Pin Status:
");
if(value == HIGH) {
client.print("OFF");
} else {
client.print("ON");
}
client.println("<br><br>");
client.println("Click <a
href=\"/LED=ON\">here</a> turn the LED on pin 2
ON<br>");
client.println("Click <a
href=\"/LED=OFF\">here</a> turn the LED on pin 2
OFF<br>");
client.println("</html>");
delay(1);
Serial.println("Client
disonnected");
Serial.println("");
}
Code Output:
Fig-1: Serial Monitor Output
Fig-2: First Load web page
Fig-3: Click on here LED ON
Dear Expert,
উত্তরমুছুনI'm trying to powering up my ESP-01 (without development board) using FTDI 3.3V. But ESP gives garbage in serial output or it
resets. But I can program easily.
If I run with 5V using FTDI... it runs and I can program also. But ESP becomes hot.
I tried also breadboard power (MB-102). But failed too with 3.3V or 5V.
Can you pls help me?
Best Regards.
Banik
01678102207