Clock. I’ve got the stepper pretty much figured out (just sped up 10x for the time being) as gar as the basic movement goes... Next up, working in a RTC and synchronizing both this and the speedo to it. That’s where I’m projecting to be out my depth. Hopefully I can find some code to copy and modify.
Moved with the same stepper motor it normally is, just driven by Arduino now.
More to the point, the speedo needs to go to 240 but only goes to 220. Read more
Kinda, I guess...
Now THAT would be some programming prowess.