There's been a couple of messages now, asking when you intend to release actual product. I suspect that, provided you warn people about the "rough around the edges" code, the actual HARDWARE is good enough to sell. The repair of code, relating to debugging, will improve when more people have the hardware - and can send fault reports. You may want your code to be as perfect as the Sistine Chapel - but even Michaelangelo had to let  the chapel be used while he painted. -- Alan