First node (bofur: garage temp, humidity, pressure, tVOC from BME680 mounted to Pi Zero W) installed and running, feeding data to Prometheus w/ Grafana front end running on AWS node.

Nodes inside the house will use WiFi

Nodes outside and in back shed will use LoRa

Next node (dwalin) on the bench. This will be the thermostat controlling the furnace. A combination of Pi Zero W with BME680 and Adafruit Feather M0 Express w/ relay, 2 buttons, MCP9808. Zero connected to Feather via serial. Undecided if I'm going to use OLED or eInk. Zero will be powered by USB brick. Feather will be powered by supercap. Zero will be the network interface and gather temps from around the house to generate an average to feed Feather. On power loss, Zero is off, Feather runs from supercap, maintaining temp at what was last set - with up/down buttons for human override. I need to test supercap run time and display tech to determine what's workable compromise to run 72 hrs without power.

Planned nodes:

ori, nori - bedroom and office with BME680 (same as bofur, USB brick powered - bedroom to be mounted inside bedside clock)

gloin - back shed with BME680 and LoRa (may use Pi Zero [not W]

balin - attic with multiple DS18B20 to monitor ambient, domestic hot water, domestic cold water, heating circuit return

bombur - yard solar powered Feather w/ supercap and BME680, no display or input, just gather and report - solar harvest and supercap to work year round exposed in New England weather.