Pololu Micro dual serial motor controller Help

vla7

I've been having alot of problems with this little motor controller.· The current problem is that when I try to run·a program, it wants to run it twice.· For example when I enter this simple to program that should turn on motor 1 for one second then turn on motor two for one second, it always does it twice.· Can someone please tell me what I'm doing wrong?

' {$STAMP BS2}
HIGH 14
LOW 15
HIGH 15
PAUSE 100
SEROUT 14,32,[noparse][[/noparse]$80,0,2,127]
PAUSE 1000
SEROUT 14,32,[noparse][[/noparse]$80,0,2,0]
PAUSE 1000
SEROUT 14,32,[noparse][[/noparse]$80,0,0,127]
PAUSE 1000
SEROUT 14,32,[noparse][[/noparse]$80,0,0,0]
PAUSE 1000
END

I'd appreciate any insight into using Pololu's micro dual serial motor controller.

Steve Joblin

hmmmm... I've sometimes had some weird behaviors with mine... as a rule of practice, I always start by making sure my stamp "warms up" a bit by issuing a "pause 100" command, then I like to ensure that the Pololu has the Default Configuration by issuing a SEROUT X,32,[noparse][[/noparse]$80,2,2] (where x is the pin you are using), followed by a "reset" by bringing the the line low for 10 ms, then high again.

Your code should look something like this:

SPEED VAR Byte
RESET_DSMC CON 3
Counter VAR Word

DEBUG CLS
DEBUG "Reset Controller", CR

FOR counter= 2000 TO 4000 STEP 200
FREQOUT 7, counter/50, counter
NEXT

' Set Default Configuration for DSMC
SEROUT 4,32,[noparse][[/noparse]$80,2,2]
PAUSE 10

' Reset DSMC
LOW RESET_DSMC
PAUSE 10
HIGH RESET_DSMC
PAUSE 100

'Start of tests

DEBUG "Ramp Up Right Motor Forward", CR
FOR SPEED = 0 TO 127 STEP 5
SEROUT 4,32,[noparse][[/noparse]$80,0,0,SPEED]
PAUSE 50
NEXT

DEBUG "Ramp Down Right Motor Forward", CR
FOR SPEED = 127 TO 0 STEP 5
SEROUT 4,32,[noparse][[/noparse]$80,0,0,SPEED]
PAUSE 50
NEXT

PAUSE 1000

DEBUG "Ramp Up Right Motor Reverse", CR
FOR SPEED = 0 TO 127 STEP 5
SEROUT 4,32,[noparse][[/noparse]$80,0,1,SPEED]
PAUSE 50
NEXT

DEBUG "Ramp Down Right Motors Reverse", CR
FOR SPEED = 127 TO 0 STEP 5
SEROUT 4,32,[noparse][[/noparse]$80,0,1,SPEED]
PAUSE 50
NEXT

PAUSE 1000

DEBUG "Ramp Up Left Motor Forward", CR
FOR SPEED = 0 TO 127 STEP 5
SEROUT 4,32,[noparse][[/noparse]$80,0,2,SPEED]
PAUSE 50
NEXT

DEBUG "Ramp Down Left Motor Forward", CR
FOR SPEED = 127 TO 0 STEP 5
SEROUT 4,32,[noparse][[/noparse]$80,0,2,SPEED]
PAUSE 50
NEXT

PAUSE 1000

DEBUG "Ramp Up Left Motor Reverse", CR
FOR SPEED = 0 TO 127 STEP 5
SEROUT 4,32,[noparse][[/noparse]$80,0,3,SPEED]
PAUSE 50
NEXT

DEBUG "Ramp Down Left Motors Reverse", CR
FOR SPEED = 127 TO 0 STEP 5
SEROUT 4,32,[noparse][[/noparse]$80,0,3,SPEED]
PAUSE 50
NEXT

PAUSE 1000