The Marlins ones are good but the car has to be outside, if I am travelling, for pleasure, the car is in the garage. Hence the project.
I disagree I fitted mine to the wall of the garage and fed the cable through a drilled hole. It works fine
Good point John, I think what I am building / configuring is a slightly more powerful version based on the size of my South facing wall that is mine in the block. Got all the bits now so will start next week once the kitchen company starts revoving the old and installing the new!!!