I am looking to measure multiple temperatures in my attic.
Ambient temp (2x)
HVAC Return temp start (3x)
HVAC Return temp end (3x)
HVAC Distribution box start (3x)
HVAC Distribution junction (3x)
I will use a Pokeys57E as that is a fairly inexpensive device that can expose 1-wire devices over modbus.
For the ambient temperature, I will use a DHT22. I like to have a “neat” installation, so I was thinking about printing a 3D box for it like this.
(1) Does the pull-up resistor go at the end of the line (near the DHT22) or does it go near the Pokeys device?
(2) Advice on how to nearly connect this to 22/4 security line? I would prefer screw terminals of some sort, but haven’t found anything in my searching.
For measuring within the HVAC system I am going to use a Waterproof DS18B20.
(1) Same as above, where does the pull-up resistor go?
(2) I will need to get power, ground, and then connect data to these. I assume the best way to do that is with a couple of terminal blocks. Does anyone recommend any good terminal blocks?