Using timer1 capture capability in Arduino controller is explained and demonstrated. Link to code: Contents: 0:00 Introduction 0:20 Input Capture in Microcontrollers 0:43 Timer Interrupts in Arduino 1:04 Input Capture Interrupt 1:58 Programming TIMER1 Registers 2:58 Circuit Description 3:27 C++ Sketch 4:19 Demonstration 4:37 Conclusion