Hi madworm, danke für die schnelle Antwort!
I will try to answer in english because some non germans might be intersted in this too. Ok:
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if i would try it with multiplexer or adc will i be able to use these analog inputs simultaneously? how does it work? will i have to tell (program) arduino to step through the channels at a given frequency?
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could i use 2 arduinos resulting in one unit with more channels?
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where can i learn how to connect all this? (i'd really like to understand what i'm doing but i don't know where to start)
thx!