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3D Printed RP2040 Powered Ring Measures CO2

Sometimes a little ingenuity is all it takes to solve a potentially life-threatening problem—such is the case with Guido Burger’s Raspberry Pi RP2040 CO2-detecting ring. This isn’t Burger’s first rodeo with RP2040, we previously covered his homemade Adafruit Feather RP2040 which he managed to assemble before the board officially released. While precise details on the…