Could anyone please point me to a good example of creating a basic webserver with a chart to show some sensor readings? I found a very good tutorial video on youtube :https://www.youtube.com/watch?v=1TGuw-cSR_I Unfortunately, it is 2 years old, and the instructions on putting the...
The sensorTask reads data from the sensors, the displayTask updates the display with the latest sensor readings, and the emergencyTask checks for emergency situations. The actual implementation of these tasks would depend on the specific sensors and display used in the project. Webserver.h The ...
if (isnan(t)) { Serial.println("Failed to read from DHT sensor!"); return 0; } else { Serial.println(t); return t; } } float readDHTHumidity() { // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor) float h = dht.readHumidity(); if (isnan(h)...
hall_sensor_read () returns a value from -19 to +56 (depends of module ). The question is why are the zero values (only Earth magnetic field) different on this modules? What are the measurement units of hall_sensor_read (), zero bias and sensivity of hall sensor?
startCameraServer(){ httpd_config_t config = HTTPD_DEFAULT_CONFIG(); config.server_port = 80; httpd_uri_t index_uri = { .uri = "/", .method = HTTP_GET, .handler = stream_handler, .user_ctx = NULL }; //Serial.printf("Starting web server on port: '%d'\n", config.server_...
analog_voltage = sensor_reading * 3.3 / 4095; Serial.print("Volatge reading = "); Serial.println(analog_voltage); Displaying Text on OLED Now, we will display these two readings on the OLED display. First, we will set the size of the text using setTextSize() and pass the size as a...
The web app can also send messages back to the ESP32. In the Arduino IDE, open the serial monitor if it isn’t currently open. Open a new browser tab and go to http://localhost:3000/pause-sensor. Your browser will receive a message from the server: “Sensor at your home is paused...
void IotsaHelloMod::serverSetup() { // Setup the web server hooks for this module. server->on("/hello", std::bind(&IotsaHelloMod::handler, this)); } Finally you create a single object of your newIotsaHelloModtype and register it to the application: ...
Program Function: Connect to the WiFi server created by FireBeetle 2 ESP32-E using a mobile phone, access 192.168.4.1, and remotely control the on/off state of the onboard LED. /*WiFiAccessPoint.ino creates a wifi hotspot and provides a web service Steps: 1. Connect to the wifi "your...
system. First, we will learn to interface HC-SR04 with ESP32. After that, we will see program our ESP32 board with the ultrasonic sensor to build our water monitor web server. The web server will show the current water level measured as the distance in cm by HC-SR04. So let’s ...