Ah man, I know it is pricey, but you are literally describing the Hoyt Remote! 3 modes easily on the fly selectable…
https://www.hoytskate.com/collections/accessories/products/speed-puck-remote-control-and-receiver
Ah man, I know it is pricey, but you are literally describing the Hoyt Remote! 3 modes easily on the fly selectable…
https://www.hoytskate.com/collections/accessories/products/speed-puck-remote-control-and-receiver
You could probably buy an extra receiver from them to hook it up to another board when you want