27220 Parallax Inc, 27220 Datasheet - Page 162

• Manufacturer Part Number: 27220
• Description: BOOK STAMPWORKS
• Manufacturer: Parallax Inc

Specifications of 27220

• Accessory Type: Booklet
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: StampWorks
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Not applicable / Not applicable

Step3
Step4
' -----[ Initialization ]--------------------------------------------------
Setup:
' -----[ Program Code ]----------------------------------------------------
Demo:
Main:
DIRB = %1111
stpDelay = 5
FOR idx = 1 TO RevSteps
NEXT
PAUSE 200
FOR idx = 1 TO RevSteps
NEXT
PAUSE 200
HIGH PotCW
PAUSE 1
RCTIME PotCW, 1, rcRt
HIGH PotCCW
PAUSE 1
RCTIME PotCCW, 1, rcLf
rcRt = (rcRt */ Scale) MAX 600
rcLf = (rcLf */ Scale) MAX 600
diff = ABS (rcRt - rcLf)
stpDelay = 100 - (diff / 6) MIN 2
IF (diff < 25) THEN
ELSE
ENDIF
GOTO Main
GOSUB Step_Fwd
GOSUB Step_Rev
GOTO Main
IF (rcLf < rcRt) THEN
ELSE
ENDIF
GOSUB Step_Fwd
GOSUB Step_Rev
DATA
DATA
%0011
%1001
' make P4..P7 outputs
' set step delay
' 1 rev forward
' 1 rev back
' read clockwise position
' read ccw position
' set speed limits
' get difference
' calculate step delay
' allow for dead band
' do a step
' repeat