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Fan PWM control with Arduino sensor temperature and RPM speed

4 pin fan with PWM / Pulse Wave Modulation More easy compare voltage regulator Speed RPM fan can adjust, example For cooling with temprature range For high load electronic and generate heat, need fan for cooling Note Almost PWM Fan have minimum RPM Between 25%, 30% 50%, 70% up to 100% speed RPM Only a few model fan 0 RPM Old mode fan sensor, have internal NTC sensor. Fan increase speed if temperature increase above 45 deg.C and turn RPM maximum speed after sensor detect 45 deg.C Using program, speed fan and temperature range can be program http://obengplus.com/artikel/articles... 00:00 Make fan control and temperature demo 00:26 Schematic wires 00:34 Sensor BMP280 00:45 Arduino Nano and OLED pin 01:06 ESP8266 pin Without LED, wire connection fan controller ESP8266 Only need 5 pin, 4 for sensor, 1 for PWM signal to fan. Other input power 12V 01:19 Display Fan, Speed, and Temperature OLED only optional 01:42 Using ESP8266 Fan Control PWM Can show fan speed, RPM etc via Web browser and connact to LAN 02:00 Minimum fan PWM speed Not all fan the same minimum RPM fan speed Intel fan Nidec FA09-12B1S1, minimum 50% Intel fan Nidect F09A-12B1S2, minimum more lower 20%, silent fan, but low speed fan 04:24 Aplication cooling PWM Fan and Arduino