If you follow this link and all the links -  https://synthiam.com/Community/Tutorials/Connecting-Arduino-to-EZ-Builder-17526

in the firmware - need to change the 5 to a 6 -  when you get to that video

it worked for me

Cheers - that will take me awhile to test - tnx sorry bud - cannot  see where to change 5 to 6 - Arduino firmware sketch has a few numbers in it lol

good luck my friend

I've updated the firmware and it'll be online in the next few days

Wow speedy reply - thnx

great, thanks - sounds good

Ultrasound sensor still not functioning on Arduino as above. I have updated firmware v 5 and ARC but same error message capability ultrasound ping distance sensor support is not supported on this EZ-B device  what’s going on - sorry

You updated to ARC beta?