Simultaneous Starting of Continuous Servo Motors

thebigoc5

hi

im wondering how i can activate 3 servo motors at the same time using BS2.
i tried using pulsout but it starts them sequentially not simultaneously

I am using the board of education

thanks

Tricky Nekro

Try this...

PULSOUT Servo1 : PULSOUT Servo2 : PULSOUT Servo3

Provas, Greece

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-Rule your Destiny-
--Be Good. Be Bad. Be Provas--

Mike Green

Strictly speaking, you can't do more than one function at a time with the Basic Stamps. There is leeway in the requirements for controlling servos. They need a pulse from about 0.5ms to 2.5ms in length every 20ms or so. That leaves room to put out several pulses sequentially. The servos will start moving within a few milliseconds of each other, but that's not much time compared to how long it takes them to actually move. So, do a PULSOUT for each servo of the proper width for the movement you want, do a PAUSE for about 12ms, and repeat. If you need to do other processing (like looking at buttons or accessing other devices), you can do that to fill out the 12ms period rather than a PAUSE. Does that make sense?

thebigoc5

thanks for the reply

ill try it out

also, someone was telling me to alter the baud using SEROUT

does anyone know anything about that?

Mike Green

You'll have to say more about what you're trying to do, particularly about the SEROUT.

Jon Williams

Please start a new thread for you SEROUT question.

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Jon Williams
Applications Engineer, Parallax