This design is a temperature control fan system with sensitive temperature sensing and display function. The system uses 51 series single chip AT89C51 as the control platform to control the fan speed. DS18B20 digital temperature sensor is used to collect real-time temperature, and the motor of DC fan is driven by triode after being processed by MCU. According to the collected real-time temperature, the fan can start and stop automatically. The user can set the high and low temperature values. The measured temperature values between high and low temperatures can open the weak fan gear. When the temperature rises above the set temperature, the fan can be automatically switched to the big fan gear. When the temperature is lower than the set temperature, the fan can be automatically closed. The control state depends on the external temperature.

Filename	Size	Update
eeprom52.h	3057	2013-12-07
温控风扇 程序	15681	2017-07-18
温控风扇 程序.M51	22284	2017-07-18
温控风扇 程序.hex	3879	2017-07-18
温控风扇 程序.lnp	42	2017-07-18
温控风扇 程序.plg	187	2017-11-11
温控风扇 程序.uvopt	55669	2017-11-11
温控风扇 程序.uvproj	13267	2013-09-24
温控风扇 程序_uvopt.bak	55669	2017-10-19
温控风扇 程序_uvproj.bak	0	2013-09-24
温控风扇程序.LST	14042	2017-07-18
温控风扇程序.c	7663	2017-07-19

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