thanks,i inserted the code and it now only misses one step,i will try and get some more decoders.
do you think these will be ok?
https://www.amazon.co.uk/dp/B07DM2G...olid=3R55DITDXQSCW&psc=0&ref_=lv_ov_lig_dp_it
https://www.amazon.co.uk/dp/B07FYHG...olid=3R55DITDXQSCW&psc=0&ref_=lv_ov_lig_dp_it
also im using on my wheel dash 1 nano, 1 Leonardo, 1 usb ttl, and of course a power adaptor.
also,I have a powered 4 port usb3 hub on my desktop where I can plug these in..do you think I could get another 4 port usb 3 hub,stick this to the backside of my dash,connect all the dash arduinos etc to that hub,then connect that to the usb hub on my desktop giving me in effect just one connection for my dash?
many thanks.