The circuit I made recently needs to process the signal in the front stage so that the input resistance of the signal to the rear stage circuit is very small, which requires a voltage follower.
When I...
[i=s]This post was last edited by manhuami2007 on 2022-10-4 11:00[/i]This time we are going to make a "contactless facial recognition access control system", and we are going to divide the system into...