Circuit Diagram:
#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define OLED_RESET LED_BUILTIN //4
Adafruit_SSD1306 display(OLED_RESET);
#define SSD1306_LCDHEIGHT 64
#if (SSD1306_LCDHEIGHT != 64)
#error("Height incorrect, please fix Adafruit_SSD1306.h!");
#endif
AsyncWebServer server(80);
const char* ssid = "******"; //replace ssid and password with your wifi network credentials
const char* password = "*********";
const char* PARAM_INPUT_1 = "input1";
const char index_html[] PROGMEM = R"=====(
<!DOCTYPE HTML><html><head>
<title>Smart Notice Board</title>
<meta name="viewport" content="width=device-width, initial-scale=5">
<p> <font size="9" face="sans-serif"> <marquee> Smart Notice Board </marquee> </font> </p>
</head><body><center>
<form action="/get">
Enter Text to Display: <input type="text" name="input1">
<input type="submit" value="Send">
</form><br>
</center></body></html>rawliteral";
void notFound(AsyncWebServerRequest *request) {
request->send(404, "text/plain", "Not found");
)=====";
void setup() {
Serial.begin(115200);
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
delay(2000);
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0, 0);
// Display static text
display.println("Notice Board");
display.display();
delay(100);
WiFi.mode(WIFI_STA);
WiFi.begin(ssid, password);
if (WiFi.waitForConnectResult() != WL_CONNECTED) {
Serial.println("WiFi Failed!");
return;
}
Serial.println();
Serial.print("IP Address: ");
Serial.println(WiFi.localIP());
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
request->send_P(200, "text/html", index_html);
});
server.on("/get", HTTP_GET, [] (AsyncWebServerRequest *request) {
String message;
String inputParam;
if (request->hasParam(PARAM_INPUT_1)) {
message = request->getParam(PARAM_INPUT_1)->value();
inputParam = PARAM_INPUT_1;
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0, 24);
display.println(message);
display.display();
}
else {
message = "No message sent";
inputParam = "none";
}
Serial.println(message);
request->send(200, "text/html", index_html);
});
server.begin();
}
void loop() {
display.startscrollleft(0x00, 0x0F);
delay(2000);
}
