Moving A Servo In A Goto Loop

PsionicCylon

USA

Asked Oct 2012 — Edited Oct 2012

Is there any way to set a servo value in a loop without running it in another script window? When I try to set a servo value in Goto loop, it only runs once. When I use multiple windows, the servo doesn't always update to the new value. Here is the script from my main window, it takes a potentiometer value, does some math, then starts a window that sets a servo to that value.

 :Start

   Release(D7)

   $PotCurrent = GetADC(adc0)
   $ServoValue = $PotCurrent / (189 / 81) - 25

   ControlCommand("SetServo",scriptStart)

 Goto(Start)

Then here is the other window.

 $ValueServo = $ServoValue

 Servo(D7,$ValueServo)

Not having that first line gives an error about setting servo positions to variables.

Please help!

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DJ Sures

PRO

Synthiam

#1 Oct 2012

Why not do it in one script? What you have won't work because it's multithreaded. You'd want to use the ScriptStartWait command...


:Start

$PotCurrent = GetADC(adc0)
$ServoValue = $PotCurrent / (189 / 81) - 25

Servo(d7, $servovalue)

Sleep(100)

Goto(Start)

Or if you insist on doing it your suggested way


:Start

$PotCurrent = GetADC(adc0)
$ServoValue = $PotCurrent / (189 / 81) - 25

ControlCommand("SetServo",scriptStartWait)

Sleep(100)

Goto(Start)

PsionicCylon

USA

#2 Oct 2012

Well, I copied and pasted this code and it only ran once. When you do anything to a servo, Goto loops don't work, they run only once. The only way I could get it to work was what I pasted above, and it ran very slowly.

DJ Sures

PRO

Synthiam

#3 Oct 2012

That's not true. I didn't notice when I edited your code that the release statement is there lol. If you release a servo, it's not going to move. Take the release out. Picture what that loop was doing. Move servo but 1 ms later release it. So it never ends up moving at all