I got one of the very first boards back in 2016 and wondering is this is supported any longer before I jump in again. Seems to be all v1.0 2017 rev 2 now? Is there a HW / FW version history anywhere?
The Rev 1 board is still supported. The only major difference is with pin-out as specified here. Besides that, there are some sensors that are positioned differently for heat dissipation purposes but should functionally still work with all our libraries.
You can see firmware version histories for all our packages on GitHub.
OK so the additional 5V power supply is new. I recall a lot of power issues originally and the board was quite sensitive to the selection of the power supply used for the Raspberry Pi. Was additional power regulation also added to the rev 2 board?
There would be issues with noisy power supply units so some modifications were made in rev 2 to help with that. Your rev 1 board should work fine with a stable 5V, 2.5A or greater power supply.
The other change was related to ZWave - we changed a memory IC, but it shouldn’t affect functionality.