This project contains: -the gas ... Arduino board to control Liquid Crystal displays (LCDs) based on the Hitachi HD44780 (or a compatible) chipset, which is found on most text-based LCDs. The library ...

displaying gas levels with an Arduino Nano. #define OLED_WIDTH 128 // OLED display width, in pixels #define OLED_HEIGHT 64 // OLED display height, in pixels const int AO_Pin=0; // Connect the AO of MQ ...

C++ code // include the library code: #include // initialize the library with the numbers of the interface pins LiquidCrystal lcd(12, 11, 5, 4, 3, 2); int ultrasonic = 0; long ...

Testing Mabee TVOC and eCO2 & Temperature and Humidity Sensor Module The MaTouch_ESP32-S3 4-inch display board comes with 2 Mabee expansion ports with I2C and I/O pins 19,20 ... use notably thanks to ...

And the DHT22 bare bone sensor has 4 pins ... using Arduino. With this circuit, we will be able to adjust the fan speed in our home or office according to the room temperature and also show the ...