Well, I have a circuit in one PC (that is connected 24 hours) to turn On/Off the fans, it consists of a program in VB that active the pins on the parallel port which in turn have a circuit with a relay and turns on or off the fans automatically, depending on the temperature (verified by SpeedFan).
The system is good and generates reports and send me by email as often as the circuit turns on, but now there are few motherboards with LPT and I have to adapt this circuit to a USB port, after testing each component i am ready to make a single circuit where I'll have this:
This all together will serve to:
- Automatically control all the pc case fans as the temperature received from the sensor
- View real-time temperature sensor in the 7-segment display
- Adjust the temperature to which the fans are going to run 100% (by software)
- Various information on the LCD 16x2
The overall objective is to control groups of fans automatically (depending on temperature), segment displays will show the current temperature and use the LCD 16x2 to provide general information of the PC (via the LCD Smartie).