WG18A02 FAQ
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I'm having a problem with a WG18A02 weight module, it was working ok until today I made an arduino program to read the weight value , It gave me an error that said "invalid slave ID" (I thought it was ID number 1, but it seems it wasn't) and when I tried to use the test tool, it's not reading anything
And sends only this: 36 12 ba

Answer :
Please short the RESET jumper on the board for 5 seconds to restore the business trip settings
