Need help with parts

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    I was looking at for ordering the atmega168 and noticed that there are several ICs that are very similar. Can someone provide some details as to which IC is the correct one?

    Also, what are the details of the metal probes? Are they galvanized? Does probe length change the reading values?


    I dealt with the metal probes today. I don’t what kind of steel they are, but they are most definitely steel. I broke one trying to bend it in two places so that I could fit it into a project, and thus had to find something to replace it. After a few hours of testing, I have learned that A) length doesn’t matter it seems as far as different lengths, longer, and up to three inches shorter, and B) I replaced the probes with galvanized steel rods. They were “ties” for chain-link fencing, available at Home Depot and Lowes. They are about one gauge larger than the rods included with the kit, so you’ll have to file them down to fit.

    I hope this helps somewhat.

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