220V Cooling Fan design features

(1) "220V Cooling Fan" use of SCM process, DS18B20 temperature sensor, simple and feasible H-bridge drive circuit design, strong interpersonal interaction.
(2) "220V Cooling Fan" can be manually set temperature upper limit temperature limit t1 and t2, so fans of the wind speed can be varied within a relatively wide range.
(3) Each small systems are relatively independent, can work alone, can be used alone as a thermometer, you can manually control the fan alone wind. It has good flexibility.
(4) wide "220V Cooling Fan" for the crowd and scope, more humane design