4-Wire fans
Rev Up Your Fan-Speed Control Designs
tachometer - 3-wire fan: Minimum supply voltage for Tach signal? - Electrical Engineering Stack Exchange
Using a programmable system-on-chip for fan control - Embedded.com
arduino - how to read and control the speed of a 12V - four wire fan? - Electrical Engineering Stack Exchange
3-Wire PC Fan Tips & Tricks - Codrey Electronics
pump pwm reading
How to read RPM from 3-wire fan - PIC18F4550 - Electrical Engineering Stack Exchange
3-Wire PC Fan Tips & Tricks - Codrey Electronics
Fan Tachometer Schematic / Circuit Diagram
Fan Tachometer Open Collector Circuit
3-Wire PC Fan Tips & Tricks - Codrey Electronics
Read fan speed with Arduino
Why and How to Control Fan Speed for Cooling Electronic Equipment | Analog Devices
3-Wire PC Fan Tips & Tricks - Codrey Electronics
Fan Speed Control Techniques in PCs | Analog Devices
How to read RPM from 3-wire fan - PIC18F4550 - Electrical Engineering Stack Exchange
4 Wire PC Fan
Fan Speed Control
Methods of Monitoring Fan Performance | Comair Rotron
Reading PC Fan RPM with an Arduino | The Makers Workbench
frequency - Read out tachometer from PC fan when manually turning the blades ( driven shaft ) - Electrical Engineering Stack Exchange
PWM a 3-pin PC fan with an Arduino - Bald Engineer
Read fan speed with Arduino
Why and How to Control Fan Speed for Cooling Electronic Equipment | Analog Devices
Problem measuring 4-pin fan RPM - General Electronics - Arduino Forum
4 Wire PC Fan
