Hi - trying to hack together a circuit to take a small amplitude sine pulse signal (moving magnet passing static coil) of around 200Hz, and output a digital high low to an arduino. the signal will be used to calculate frequency.
I know there are a few example diagrams out there for using LM393 as a comparator, so i thought as a test I could get hold of a 393 based sound detection module that uses an electret microphone. i'm thinking i should be able to replace the microphone signal with my input and save myself some breadboarding, but what do you think? Am i way off track? I'm assuming the microphone will be active and therefore i can't just wire the input to the terminals of the mic, but i was hoping there must be somewhere in the circuit i can insert my signal to get the desired result.
Feel free to tell me if I'm in lala land - I can trace circuits and hack components together but my electrical engineering level is pretty low as you may have guessed. Cheers!
I know there are a few example diagrams out there for using LM393 as a comparator, so i thought as a test I could get hold of a 393 based sound detection module that uses an electret microphone. i'm thinking i should be able to replace the microphone signal with my input and save myself some breadboarding, but what do you think? Am i way off track? I'm assuming the microphone will be active and therefore i can't just wire the input to the terminals of the mic, but i was hoping there must be somewhere in the circuit i can insert my signal to get the desired result.
Feel free to tell me if I'm in lala land - I can trace circuits and hack components together but my electrical engineering level is pretty low as you may have guessed. Cheers!