Is the moisture sensor food-safe?
  • I'd like to use the moisture sensor to alert me when the level in my espresso machine's water tank has dropped and needs to be refilled. Is the moisture sensor--and specifically the probes, which will be actually touching the water--food-safe?
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  • (I got impatient and asked on Twitter as well, and @Supermechanical replied that it is not. Bummer!)
  • You should be able to alligator-clip a food-safe probe to each of the two copper pads at the bottom of the moisture sensor, and get good results -- it's just a matter of electrical resistance, and a couple feet of wire shouldn't be significant.  Don't separate the two probes by much distance.

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