What the OP probably needs, rather than an array of integers, is a binary string of unsigned chars derived from the hex string input.

That is done using pack, not unpack:

print pack 'H*', "A21B12C212AD12FF";;
ó←↕┬↕¡↕ 

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In reply to Re^2: String to Byte array by BrowserUk
in thread String to Byte array by kpaxian25

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