If you are looking for the LUX card for HA, Dante has made an amazing card that mirrors the LUX website and his Github is here: https://github.com/DanteWinters/lux-power-distribution-card/
If you looking for LuxPython AKA https://github.com/guybw/LuxPython_DEV It's currently a private Github page - it might say 404 but it's absolutely live and working.
Please drop me an email at guybw hotmail com (email address obsured as honestly the amount of spam I get is worrying already. I will send over an form just so I understand your setup and confirm this works for you and then I will get you added.