How PIR Motion Sensors Work - The Learning Circuit
11:56
DIY Motion Activated Snow Globe - The Learning Circuit
16:13
Passive infrared motion sensors: a two-bit camera powered by crystals
7:57
How Do Hall Effect Sensors Work? - The Learning Circuit
8:45
How Op Amps Work - The Learning Circuit
11:54
PIR motion detector - HOW IT WORKS (easy to understand)
19:31
The Micro Mechanisms in Your Phone
17:35
How a quartz watch works - its heart beats 32,768 times a second
7:43