servo problems

ajs4

I am trying to run a program that is supposed to run the motors for 6 seconds no matter how many pulses the stamp receives. When I send "700" it runs for about 6 seconds; when I send "650" it runs for less than a second.

this is the program:
·· FOR counter = 1 TO 244
······ PULSOUT 12, pulseWidth
······ PULSOUT 13, pulseWidthComp
····· ·PAUSE 20
·· NEXT

LOOP



Any ideas?

Thanks.

Mike Green

You've probably exhausted your batteries. Each loop normally would take 20ms plus pulseWidth plus pulseWidthComp (which you haven't specified). Assuming pulseWidth is around 700, that's 1.4ms with a BS2. If pulseWidthComp is roughly 800, that's 1.6ms for a total of 23ms per loop which comes out to about 5.6 seconds.

ajs4

Thank you, Mike. I replaced the 4 1.5V batteries with one 9V battery and it's running faster than ever!




Thank you again,

ajs

rotary9k

This happened to me recently too! I replaced the batteries and BAM, it went so much smoother and faster.

And thanks for those numbers on execution time for the pulsouts. Now I can actually put some real math into it rather than trial and error.