Vizzy help - speed of a ground vehicle.

@LofiTurtle i dont think you can just get the heading to the target, but you could subtract the craft position from the target position and then get the angle between that and the north pointing vector. You would have to figure out if the target is to the west or the east though.

@Shmexysmpilot Thanks for the tips. reading your response I now realize I was looking at it totally backwards. lol. thanks. I'll keep you posted if I figure it out.

@RikHar if you're still learning vizzy, don't worry about PID controllers and stuff yet. To steer towards a target, you'll need to get two values. Your current heading, and the heading towards your target. The current heading is easy, just a nav block set to heading. For the target, there should be some "direction to target" vector, and you can use one of the components to get the heading to target. There might be an easier way, but I'd need to look to be sure. Once you get these two values, subtract the heading to target from your current heading, and set that value to the input you're using to steer. You probably need to multiply/divide it to make it go from -1 to 1, but that's the gist of how I'd approach it. Just have all of that running inside a loop, so it keeps recalculation the headings and steering angle

@Shmexysmpilot I'm not very good with Vizzy yet. Starting to familiarize myself with it lately. Not at at familiar with a the PID controller thing. I tried to make it turn towards a target with no luck using nav-heading, yaw axis, target position, input roll, input yaw, and some others all with no luck. any ideas?

@RikHar you could do something similar to the throttle solution. If it's to the left of target, steer right and vice versa. A PID controller for that wouldn't be too complicated if you wanted it to function a little better

@Insanity Any ideas on how to make a rover auto steer to a target? Been trying that for a a couple days now?

Or you could make a full on PID controller, but thats probably a bit overkill for something simple like throttle control, if you want it to steer on its own that might be needed though.

@plane918273645 Thanks. Adjusted. works great.

You may want to make it a little more complicated than what you have because that will make the throttle flicker, if instead increase throttle 0.01 if under 3m/s and decrease by 0.01 if over 3m/s then it will be much more stable

@RikHar
It's no problem. Glad to see that it works for you

@QarabinaKa Thanks a lot . worked fantastic. Cant believe I struggled for two days with some this simple. Your the best.

Thank you so much Qarabinaka, that worked perfectly. Now I can add some extra features. Cool. Thanks.

The "If" and "else if" blocks are inside the "while block", but not each other. Hope this works for you!

Try this:
On Start
While [true]
If [3 > velocity surface] and [Activation Group 1 = 1]
Set throttle to 1
Else if [velocity surface > 3] and [Activation Group 1 = 1]
Set throttle to 0