Serial number in replacement Nano

[Bradley Snyder]

Hello, I had to replace the Nano that came with the kit as it started giving me random lockups. I originally suspected power problems, but it would freeze at random times even when powered through USB. When I replaced it with another Nano it is rock solid again, no freezing.

My question is can my serial number be placed in the replacement Nano? I made some attempts, but I think it doesn’t like the checksum (or something similar to that).

-Brad

[Bradley Snyder]

I was able to resolve this by adding a write in the main sketch. When the odometer get written, I also wrote my serial number in the right area. I saved a profile just to be sure, then put your original sketch back on the Nano and now it provides the serial number when I press ‘S’.

-Brad

[me2016]

Good you figured it out. I was going to say “use the force, i mean the source” 🙂
Serial number is put in with a different program (that isn’t public) but it’s not like it’s encrypted or so, so reading the source it shouldn’t be that hard to set.

Now you mention you replace it because of lockups, that is interesting to me. Does it work better with the replacement?
The ones we get are of course clones and quality may not always be the best.
/ps

[Bradley Snyder]

Yes, it works great again. The Nano I used to replace the original is probably also a clone. I usually only buy clones and haven’t had any trouble. Maybe just a bad one, or maybe it got hit with static? I don’t know. I was using it, put it away for a couple weeks, then when I got it out again it kept locking up.

From reading the source I did realize that you used a non-public program to write the serial number. I was going to try writing a separate program, but then I figured out that I could used the main program to do it by adding one statement near where the odometer gets written to eeprom.

P.S. I really like this kit!

-Brad

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