A temperature sensor is a device, typically, a thermocouple or resistance temperature detector, that provides temperature measurement in a readable form through an electrical signal. Temperature sensors are devices that detect and measure coldness and heat and convert it into an electrical signal. Temperature sensors are utilized in our daily lives, be it in the form of domestic water heaters, thermometers, refrigerators, or microwaves.Within our homes, temperature sensors are used in many electrical appliances, from our refrigerators and freezers to help regulate and maintain cold temperatures as well as within stoves and ovens to ensure that they heat to the required levels for cooking, air confectioners/heaters.

**ITEMS USED FOR THIS PROJECTS ** Breadboard

Arduino uno

Some jumper cables

LCD display

temperature and humidity sensor DTH22

CONNECTION

GND pin from the LCD display goes to GND on the arduino board VCC from the LCD goes to 5v on the arduino board SCL pin on the LCD goes to pin A5 on the arduno uno board SDA pin on the arduino goes to A4 on the arduino uno

GND pin from humidity sensor goes to GND on arduino uno VCC pin from the humidity sensor goes to 3.3v on the arduino uno signal/orange pin from the humidity sesnor goes to pin A3 on the arduino uno