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  • Data rate is not an issue as I use the DH22 to turn my window AC on and off based on keeping temperature and RH within a comfort zone. In my climate humidity is a factor in maintaining comfort and temperature alone either freezes me or I wake up in the night with too much humidity. Sampling every minute or longer should suffice.

    As to the two second interval, the module code does up to 10 retires one after the other. Perhaps the 2 second specification is related to the accuracy of the reading and not to the ability to read data from the device.

    The hardware is setup on a solder less breadboard with 6 inch jumper wires and a 4.7k pullup resistors.

    As to the double pulse idea, I tried that and it doesn't trigger the device any better than the single pulse.

    Thanks for the alternate parts list, I will investigate.

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