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Hello! I'm studying alone in Korea about measurement of RPM of Crazyflie 2.1.
I saw a post about "One comment on “Measuring propeller RPM: Part 1"
And then I following the picture you developed.
But I have 3 questions that I cannot understand.

1.Is this resistor "Thick Film Resistor" used"?
If that used, Can I change the "Carbon Film Resistor" generally? 2. In Prototype deck, If I solder in 1(row)-A(column), Is hole 1-A connect with pin 1 automatically? 3. What do you use scope program in the post?

Hi!

I will try to remember

1. Yes you can use Carbon Film resistor instead

2. Yes

3. To verify the output from the sensor. That it detects the spinning propeller and that the signal looks good.