![]() ![]() The conversion formula for Celsius to other scale are given below. The sensor supports long transmission distance.Īrduino reads the temperature and humidity at 2 second interval and sends to the serial port as well as displays on LCD screen. ![]() Every DHT22 sensor of this model is temperature compensated and calibrated in accurate calibration chamber and the calibration-coefficient is saved in internal OTP memory. ![]() The DHT22 data pin is connected with Arduino digital IO pin, and pulled up to Vcc, via 10K ohm resistor.ĭHT22 (AM2302) outputs calibrated digital data signal. The temperature accuracy is ☐.1☌ (maximum). The ILI9488 is comprised of a 960-channel source driver, a 480-channel gate driver, 345,600 bytes GRAM for graphic data of 320 (RGB) x 480 dots, and power supply circuit.Īrduino SPI port is connected to the LCD ( D13- SCLK, and D11 – MOSI).Īrduino Digital IO pin D9 and D10 is connected to RS and CS pin of LCD.ĭHT22 digital temperature / humidity sensor delivers temperatures between -40☌ and +80☌ and humidity between 0% to 100%. The ILI9488 LCD Controller is a 16.7M single-chip SoC driver for a-Si TFT liquid crystal display panels with a resolution of 320(RGB) x 480 dots. The LCD is easily interfaced with Arduino SPI bus, and it needs minimum of four Digital IO lines. The TFT LCD (3.5 inch, 320x480 pixel, ILI9488 LCD controller), is used for this instructable. ![]()
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