Hi Gilles,

I hope you had a nice and peaceful Christmas and you stay well.
I have studied you roof scripts with this USB relais. It is quite straight forward and I can understand it quite easily. Only thing I could not understand is how did you connect the limit switches ot the relais or to a Pi? In your unpark.py script is a comment about a Pin 2 connection but seems to be controlled by the relais driver.
I ordered 4 limit switches and a electronic lock to keep the roof tide and secured against gusts and rain. I try to incorporate this into the unpark and park scripts.

Have a good New Years Eve.

best regards Gunter