Parallax Boe-Bot Whisker Kit Instructions

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Whisker Kit Instructions (#28134)

Instructions for using bumper switches with your Parallax Boe-Bot

The bumper switches in this kit look like whiskers (or antennae) when they're mounted on the Boe-Bot. Whiskers

increase the Boe-Bot's ability to sense the world around it by giving it tactile sensitivity. The Boe-Bot can use

these whiskers to navigate only by touch. Whiskers can also be used along with either or both of the Boe-Bot's

two types of sight, light intensity and/or object detection.

Parts List

Verify that your Whisker Kit has all components listed

below. Parallax part numbers are included in case you

want to replace or reorder any of the pieces.

• (2) 10K ohm resistors (#150-01030)

• (2) 3-pin headers (#451-00303)

• (2) 3/8" 4/40 male/female standoffs (#700-00049)

• (2) ¼" 4/40 size screws (#700-00028)

• (2) Boe-Bot bumper wires (#700-00010)

• (2) Nylon washers size #4 (#700-00015)

Pictured Boe-Bot is using the Board of Education Rev. B, due for release in July 2000. The Board of Education Rev. B. has

built-in servo connects and power supply capacitors. The power supply capacitors replace the large 3300 uF capacitor that

was required with the Board of Education Rev A.

Boe-Bot with whiskers

Whisker Kit Instructions (June 2000) • Page

http://www.parallaxinc.com

http://www.stampsinclass.com

Parallax, Inc

Page 1 Whisker Kit Instructions (#28134) Instructions for using bumper switches with your Parallax Boe-Bot The bumper switches in this kit look like whiskers (or antennae) when they’re mounted on the Boe-Bot. Whiskers increase the Boe-Bot’s ability to sense the world around it by giving it tactile sensitivity. The Boe-Bot can use these whiskers to navigate only by touch.
Page 2 Parallax, Inc http://www.parallaxinc.com http://www.stampsinclass.com Hardware and Circuits Below is a whisker diagram in case you decide to build your own. Any firm yet springy wire will do the job. Whiskers are just physical extensions that actuate normally open switches, and they’re easy to build. Here’s how:...
Page 3 Parallax, Inc http://www.parallaxinc.com http://www.stampsinclass.com BASIC Stamp Boe-Bot Navigation Using Whiskers Whiskers.bs2 is a simple roaming program example that uses Whiskers instead of infrared for object detection. This program listing makes the Boe-Bot travel straight ahead while monitoring the whiskers to see if they have bumped into an obstacle.
Page 4 Parallax, Inc http://www.parallaxinc.com http://www.stampsinclass.com right: ' turn right if left switch closes gosub back for counter = 0 to 50 pulsout servo_left,850 pulsout servo_right,850 next goto drive_servos '----------------------------------------------------------------------------------- Whiskers Tips Problem Possible Solution Boe-Bot backs up too far/not far enough.

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