This paper presents the designs and the simulation of a DC fan control system based on room temperature using pulse width modulation technique, humidity and temperature sensor namely DHT11 with Arduino Uno Microcontroller. The fan will be used to reduce temperature of a room at certain level. To build the fan, we will use DTH11 Humidity Sensor. The sensor will measure the temperature continuously. When the temperature gets higher from a specific temperature, the fan will be on “On” mode. The speed of the fan will be determined by pwm using pulse-width modulation.

Nov 17, 2016 - An automatic fan controlled using thermistors. Int pinOut = 10; int ledpin=13; int buttonpin=8; double Thermistor(int RawADC) { double Temp;. Wwii walther p38 serial numbers.

The temperature along with the speed of the fan will be displayed through LCD monitor.

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