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Improving the sensor readings part 2

A project log for Laundrify

A system to monitor shared washing machines in a house(hold) that notifies you when your machine is finished or one becomes available.

timonskutimonsku 08/22/2014 at 21:440 Comments

So I read a bit into current to voltage circuits and seems the resistor only approach is pretty bad. Using an op-amp as a virtual ground seems to produce quite a lot better results, those guys are super cheap so that doesn't add much/anything at all to the bom.
I will pick one up tomorrow and see how that goes.

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