Automatic Temperature Controlled Fan Using Arduino For Home

Nov 17, 2016 - An automatic fan controlled using thermistors. Automatic home fan controlledArduino. #include #include.

Circuit Description of Temperature Controlled Fan using Arduino The entire circuit of ‘Temperature Controlled Fan using Arduino’ utilize very few components, a MCU (Arduino Uno), a temperature sensor (LM35), a LCD, a motor (Fan), a transistor and few other passive components etc. Basically IC 1 (LM35) is a transducer which convert temperature to electrical signal. As the output is analog in nature so the output is connected to analog input pin (A1) as shown in figure. The temperature sensed is displayed in LCD and control the output of fan as per command in source code. The output is taken from pin D11 which is further given to base of NPN transistor (T 1) through resistor R 2. Transistor T 1 is basically a which switch motor (Fan) on and off as per command.

A diode is connected across the motor which is also called an fly-back diode used to eliminate voltage spike generate across inductive load. Other project on temperature indication and controlling posted in • • • • • Operation of Temperature Controlled Fan using Arduino: – The circuit designed here is used to control the speed of fan by method of pulse-width modulation (PWM) signal. Fastreport studio full crack idm download.

The signal generates here is of low-frequency generally in the range of 30 Hz. As the circuit posted here used a general-purpose transistor for switches which may generate noise because the signal is of pulsed nature. Software: – The core section of the project; software part is written in arduino programming language which is very much as C.

The program is compile and burned to arduino uno using arduino IDE. You can directly download the code and use it without any modification. PARTS LIST OF TEMPERATURE CONTROLLED FAN USING ARDUINO Resistors (all ¼-watt, ± 5% Carbon) R 1, R 2 = 1 KΩ R 3 = 470 Ω VR 1 = 10 KΩ Capacitor C 1 = 10 µF, 16 µF (Electrolytic Capacitor) Semiconductor IC 1 = LM35 (Temperature Sensor) T 1 = BD139 (NPN Transistor) D 1 = 1N4007 (Rectifier Diode) LED 1 = 5mm LED LCD 1 = 16×2 LCD Arduino Uno Board Miscellaneous M 1 = 12V DC Operated Fan 12V Battery for Fan.