Fume Extractor Controller

A box for controlling the fans and servo valves connected to my resin printer and FDM printer, and the settings on the [humidistat](https://www.thingiverse.com/thing:6701495).

There are 2 versions; the different between V1 and V2 is that V2 has 2 hour meters for measuring the fan on times for each printer. The Arduino code will work for either of them, and the only difference in the schematic are the hour meters.

The code is also designed to work with an external raspberry pi which is running Octoprint. Im using a package that enables a GPIO pin when the printer is running with octoprint which overrides the manual switch to turn on the fans.

I realise the humidistat button is very niche usage, so if anyone wants the controller where it is removed please let me know.

** Parts you'll need: **
* [Arduino Nano](https://www.amazon.co.uk/dp/B072BMYZ18?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_2v)
* [2 47mm x 34mm bread boards](https://www.amazon.co.uk/dp/B09ZK34JHZ?ref_=ppx_hzsearch_c