servos do not work with 08m

[jaoDesign]

i have been trying to get my 08m to control two different servos all day.

servos are powered by computer supply, and i also tried battery power.

i've tried all kinds of test programs, including the one that in the documentation.

basicly both my Futaba and Airtronics servos rotate to full counterwise...

any ideas?

[Rickharris]

What are you using to provided the drive current for the servos?

[ylp88]

I think you have separated your power supplies (computer power supply for servo, battery for PICAXE), based on what you said. This is good, however, make sure that the 0V line of the computer supply and the -ve terminal of your battery are connected together.

Also make sure that you have adequate power supply filtering, even though you have separate power supplies for the PICAXE and servo.

Good luck...

<b><i>ylp88 </b> </i>

[Bloody-orc]

chec that all grounds are connected together. if not then there is no current movement (no closed circuit) and therefor nothing happens.

[ylp88]

Also make sure that the computer power supply is being loaded enough for it to operate. I find that I need to tie the &quot;Power Good&quot; line low. Check the output voltage of the power supply to see if it is operating as expected.

<b><i>ylp88 </b> </i>

Edited by - ylp88 on 1/29/2006 12:27:17 PM

[BeanieBots]

Go back to basics first.
Just send the servo command like this.

main:
servo 1,150
pause 1000
goto main

It should centre and hold a servo on pin 1.
You must not let the program end or the pulses will also stop.

[jaoDesign]

yep...

tied power from the compter supply to -ve. works pretty good!

thanks for the replies!