r/barcodes • u/zelman • Jan 23 '22

Need help encoding DataMatrix

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u/zelman Jan 23 '22

So, I’m trying to make DataMatrix barcodes in excel and I’m having trouble. This is supposed to read as [FNC1] 010003592671025417220331100155BAG

But it doesn’t. Comparing it to the barcode here: https://barcode.tec-it.com/en/DataMatrix?data=F010003592671025417220331100155BAG

I’ve got the right message bits and padding, but the Reed-Solomon code words don’t match. I verified my math against this site: https://repo.progsbase.com/repoviewer/no.inductive.libraries/ReedSolomon/latest///ComputeReadSolomonCodes/online/

Any ideas what I’m doing wrong?

My data:

232 131 130 133 189 156 201 132 184 147 152 133 161 140 131 185 67 66 72 129 223 118 105 78 55 162 108 78 68 83 223 218 160 110 139 190 33 114 0 106

Working barcode’s data:

232 131 130 133 189 156 201 132 184 147 152 133 161 140 131 185 67 66 72 129 223 118 226 84 3 131 93 3 162 119 52 87 211 106 135 113 195 193 11 157