Re: What a solution for Smeter?
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You need to connect the 2nd nano's input to the VOL-high connection as in the drawing (the max signal), not the middle as that has a signal that varies with volume pot position.
Yes, You have to program the second nano with the DSP-meter sketch https://github.com/phdlee/dspmeterv1 (I can't find a precompiled version at the moment, but if You want I can send it to You later if You don't want to compile it yourself)
I suspect that I attached the wrong drawing in my previous email, please see http://www.hamskey.com/2018/07/standalone-signal-analyzer-i2c-type_29.html and follow instructions and drawings provided there. I have the 2nd Nano in series with the Nextion so it supports the DSP-meter functions on the Nextion.
Den ons 14 okt. 2020 kl 09:02 skrev Gerard <kabupos@...>: