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Parallax Boe-Bot Tank Treads Manual

Parallax Boe-Bot Tank Treads Manual

Treaded addition for the boe-bot

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Boe-Bot Tank Treads (#28106)
Treaded Addition for the Boe-Bot
Introduction
Treads let the Boe-Bot to access more varied terrain such as carpet, small rocks or imperfect surfaces.
This kit involves the removal of the Boe-Bots wheels and addition of a treaded drive train.
Packing List
Verify the contents of your Boe-Bot Tank Tread App Kit to include:
Documentation
(2) metal sides – 720-28106
(1) Plastic wheel set and (1) Rubber tread set – 721-28106
(2) Servo horn (standard or disk) - 725-00013
(8) 4-40 Machine Screws, 1/4" – 700-00028
(6) 4-40 Machine Screws, 3/8" – 700-00002
(8) 4-40 Machine Screws, 7/8" – 700-00007
(22) 4-40 Nut – 700-00003
(2) 1.5" screw – 710-00008
(2) 1.25" standoff – 713-00003
If any parts are missing contact Parallax immediately for replacements.
Tools Needed
You will need a Philips screw driver, wrench and a 3/32" drill (or Exacto type knife).
Assembly
From the set of wheels cut out the following and trim off any burs:
(2) large wheels (with teeth)
(2) large wheels (no teeth)
(6) medium sized wheels (no teeth)
The remaining wheels are not used.
1
599 Menlo Drive, Suite 100
Rocklin, California 95765, USA
Office: (916) 624-8333
Fax: (916) 624-8003
Parallax, Inc. • Boe-Bot Tank Tread Kit (#28106)
General: info@parallax.com
Technical: support@parallax.com
Web Site: www.parallax.com
Educational: www.stampsinclass.com
03/2004

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Summary of Contents for Parallax Boe-Bot Tank Treads

  • Page 1 (2) 1.5” screw – 710-00008  (2) 1.25” standoff – 713-00003  If any parts are missing contact Parallax immediately for replacements. Tools Needed You will need a Philips screw driver, wrench and a 3/32” drill (or Exacto type knife). Assembly From the set of wheels cut out the following and trim off any burs: ...
  • Page 2 Using the ¼” screws attach the two large wheels (with teeth) to the servo horns as shown in Figure 3. Figure 3: Mounting the Wheel to Servo Horn Mounting the wheel with teeth to the servo horn with ¼” screws. Parallax, Inc. • Boe-Bot Tank Tread Kit (#28106) 03/2004...
  • Page 3 Remove the wheels from your Boe-Bot. The servos should be mounted with the head toward the rear ball wheel as in Figure 5. wrong way right way Figure 5: Servos are Mounted on the Outside of the Chassis Parallax, Inc. • Boe-Bot Tank Tread Kit (#28106) 03/2004...
  • Page 4 When mounting the wheels make sure there is a small gap between the wheel and the nut so the wheel can roll easily. Leave a small gap so the wheel can turn freely. Mount the remaining wheels shown in Figure 8. Figure 8: Mount the Remaining Wheels with 3/8” Screws Parallax, Inc. • Boe-Bot Tank Tread Kit (#28106) 03/2004...
  • Page 5 Rev C Figure 10: Installing the Standoff “Protectors” The Boe-Bot’s breadboard circuit can be protected by installing (2) 1.5” screws and (2) 1.25” spacers on the front of the Board of Education. Parallax, Inc. • Boe-Bot Tank Tread Kit (#28106) 03/2004...
  • Page 6: Parts Required

    220 ohm resistor 1/4 watt (#150-02210)  (1) Memsic 2125 Dual-axis Accelerometer (#28017) Wiring Diagram and Pictorial To Servos 15 14 13 12 Black Board of Education © 2000-2003 Rev C Parallax, Inc. • Boe-Bot Tank Tread Kit (#28106) 03/2004...
  • Page 7 Schematic Memsic 2125   1 k 1 k Parallax, Inc. • Boe-Bot Tank Tread Kit (#28106) 03/2004...
  • Page 8 ' right motor stop RRev 1000 ' right motor reverse IsHigh ' high-going pulse IsLow ' low-going pulse YThresh ' Y tilt threshold ' -----[ Variables ]------------------------------------------------------- pulses Byte ' counter for servo control Parallax, Inc. • Boe-Bot Tank Tread Kit (#28106) 03/2004...
  • Page 9 = ~RtIrIn ' read input (1 = target) RETURN Forward: ' move tank forward FOR pulses = 1 TO 5 PULSOUT LMotor, LFwd PULSOUT RMotor, RFwd PAUSE 20 NEXT RETURN Parallax, Inc. • Boe-Bot Tank Tread Kit (#28106) 03/2004...
  • Page 10 PULSOUT LMotor, LFwd PULSOUT RMotor, RRev PAUSE 20 NEXT ENDIF RETURN Back_Up: ' back up a bit FOR pulses = 1 TO 10 PULSOUT LMotor, LRev PULSOUT RMotor, RRev PAUSE 20 NEXT RETURN Parallax, Inc. • Boe-Bot Tank Tread Kit (#28106) 03/2004...

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