1 Comparator tutorial & clapper circuit
An Afrotechmods tutorial on using an op-amp as a comparator, including a clapper circuit, often linked when someone needs a simple threshold detector without a microcontroller.
Topic
comparators
2 videos. Ranked by independent recommendations, not by views.
2 HACKED!: Using an HDD Motor as a Rotary Encoder?!
GreatScott's video is the standard pointer for reusing an old hard drive motor as a rotary encoder with an Arduino, explaining the basic operating principle.
