Nice chip this AS6221. But how on earth can one solder this tiny little chip?
i can't i can barely see it. used a dev board , their not cheap either.
when i first saw the board i thought they had sent me a blank board the smd resistors and caps are grains of sand
or dust specs

The dc variable holds the temp in x1000, right? So printing the last 2 digit with DEC2 does not need //100.
no its temp x100 and the second term is the remainder {modulus) I'm not confidant that a simple division would ever be correct