SparkFun Line Follower Array Hookup Guide

Contributors: MTaylor

Hardware Overview

The array PCB has a few pieces to note.

1. IR brightness control and indicator -- The IR PWR led shows the strength of the IR LEDs. Brighter means more IR emitted.
2. Polarity marking -- Shows getPosition() polarity.
3. Robot vision indicators -- See what the IR sensors are picking up. Note: these are not inverted by the library's set/clearInvertBits() functions. Usage covered in Setting the Brightness
4. Digital interface -- Described in the Assembly section.
5. I2C pull option jumper -- Defaulted to 3.3V pull-up. Can be converted to 5V if necessary. See Setting the Jumpers.
6. Mounting holes -- The inner two holes fit the Shadow chassis. Others are general purpose.
7. The IR transducers -- These emit and detect IR radiation.
8. I²C address selection -- Set the jumpers in accordance with the table for a desired address.

Electrical Specifications