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9 years, 11 months ago.
Use pwm to control the speed of a fan
I want to use a temperture sensor to make a fan automatic. In addition, I reckon to write some program about PWM to control it ,but it seems too hard for me to accomplish. I want to set the lowest working temperature, when the room temperature below the setting temperature, it will stop working. Inversely, when the room temperature gets higher than another set temperature, it works again.
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