1. Hardware
1. PCF8574 Description
I have a pcf8574 IO expansion board, which was originally used to drive 1602. Unfortunately, I found that 1602 was broken and could not light up. So I could only use
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Dear teachers, how do you choose the filter capacitor for the bridge rectifier circuit?
When calculating the filter capacitor after bridge rectification, it is often necessary to first set a time cons
This kind of signal appears during simulation, like oscillation. The actual circuit built also has this problem. It looks like the noise is very loud, and I can't find the reason. This kind of signal
[i=s]This post was last edited by mig29 on 2021-1-18 00:11[/i]I received this board quite late, but the good thing is that I can see the steps of the previous ones.In fact, the development boards of d