tiefpunkt’s avatartiefpunkt’s Twitter Archive—№ 15,383

      1. I'm trying to measure multiple voltages (different cells of a LiPo pack) through a 4051 multiplexer, and something doesn't work right. Testing it with a single battery connected to a single cell pin (rest floating), but I see voltages on all pins? Any ideas what I'm doing wrong?
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    1. …in reply to @tiefpunkt
      This is my super ugly test setup by the way. Did I mention I need a proper PSU? The battery is at 6.7v, it's negative side connected to BAT_GND, and the positive to two battery cell pins for testing. And it only shows weird stuff 🙈
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  1. …in reply to @tiefpunkt
    Ok, I found something, and it's kind of what I was expecting. Adding two resistors and suddenly the readings start kind of making sense
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    1. …in reply to @tiefpunkt
      So my voltage divider hack didn't work and I need proper voltage dividers on all battery pins. We can do that 👩‍🏭 #thereifixedit
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      1. …in reply to @tiefpunkt
        That's why you always order more parts than you think you need 😉🙄
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