These are two brackets that can mount to the bottom of the Trekker to hold photo reflectors. Black and white contrast disks are included that can be read by sensors to allow the microcontroller calculate how far the robot has traveled.
This complete inspection robot package includes a RunCam2 camera and high power LED lights. It records in HD 1080p. This is a rugged treaded robot platform for inspecting hard to reach areas such as crawlspaces and attics.