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These are very thin variable potentiometers
When the “whisker” bumps into a foreign object it will make contact with a nut next to it
1/16 duty cycle
Common Cathode
This is a really nice feature to have and allows a sketch to be downloaded without having to hit the reset button
SparkFun Line Follower Array Infrared, Sparkfun Originals Audio & Video Accessories These are very thin variableThe SparkFun Line Follower Array is a long board consisting of eight IR sensors that have been configured to read as digital bits! We have designed the SparkFun Line Follower Arrays to follow a dark line of about inch width or smaller (spray paint or electrical tape) on a light background. Each array features visible LEDs that point upward when the board is attached (properly) so you can see what the robot sees, brightness control right on the board,
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