900-00008 Parallax Inc, 900-00008 Datasheet - Page 2

• Manufacturer Part Number: 900-00008
• Description: SERVO CONTINUOUS ROTATION
• Manufacturer: Parallax Inc
• Type: DC Servor

Specifications of 900-00008

• Voltage - Rated: 6VDC
• Rpm: 60 RPM
• Shaft Rotational Direction: CW, CCW
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With: 28824 - SERVOPAL SERVO PULSER TIMER
• Features: -
• Shaft Diameter: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Using a Parallax screwdriver or an (0x40) size Phillips screw driver. Program the BASIC Stamp®
microcontroller you are using with one of the following codes or setup your pulse generator to 1.5 ms at
20ms intervals. Once the pulses are generated and the servo is powered and connected. Insert the
Phillips side of your screw driver in to the adjustment port. Once inserted you should be able to turn the
internal potentiometer to the left and right. You should see the servo change direction also to the left and
right. If not make sure you are making contact with the potentiometer. Warning: do not press too
hard you may do permanent damage to the servo. To adjust the potentiometer turn to the
left/right until the servo stops turning. Be sure to adjust the potentiometer slowly to in sure you do not
pass the set point. If you do pass it the servo will change direction.
BASIC Stamp 1 code
SYMBOL Servo_pin
Start:
GOTO Start
BASIC Stamp 2,2e,2ep code
Servo_pin
Start:
goto Start
BASIC Stamp 2sx,2p24,2p40 code
Servo_pin
Start:
GOTO Start
Servo Control from a BASIC Stamp microcontroller
Parallax (www.parallax.com) publishes many circuits and examples to control servos. Most of these
examples are available for download from our web site. On www.parallax.com type in “servo” and you’ll
find example codes below.
© 2004 Parallax, Inc. • Continuous Rotation Servo (#900-00008)
PULSOUT Servo_pin,150
PAUSE 20
PULSOUT Servo_pin,750
PAUSE 20
PULSOUT Servo_pin,1875
PAUSE 20
CON
CON
+
= 0
0
0
Wiring setup
4/29/2004
Version 1.
3
Page 2