Topic

tachometer

2 videos. Ranked by independent recommendations, not by views.

1. 

   1 (#0033) 4-Wire Computer Fan Tutorial

   High Voltage Hot Dog 7 people · 7 months · since Sept 2015

   Linked as an example when people struggle to run four-wire PC fans, showing how the PWM speed wire and tachometer output are connected.

2. 

   2 Arduino Tutorial: Tachometer (RPM Counter)

   InterlinkKnight 6 people · 6 months · since Mar 2021

   InterlinkKnight's Arduino tachometer walkthrough, whose measurement code people reuse for engine and vehicle speed projects after adapting the sensor and pulse maths.