I have designed my own 3-sensor line sensor board and 5-sensor line sensor board for this bot design. http://www.r2pv1.com/
another design for a RoboGuts™ circuit board and PIXY CMUcam5 plus a handfull of sensors to create a real gamer bot that can perform Collision Avoidance, the TableTop-1 challenge, Follow Lines and myriad other robot gaming functions ...
Sensors: SHARP GP2D12, Sharp GP2Y0D805Z0F, QTR-LRC-1A Reflectance Sensor, and the UltraSonic could be a Parallax PING or HC-SR04, or SR-05 ... almost any of the popular UltraSonics on the market.
Yes, all my designs could be a FREE download once I am fully funded for my RoboGuts™ S.T.E.A.M. Education Program Kits for the local Boys & Girls club;
IF each viewer donates just $5 I'll be funded almost overnight and then all my designs become FREE downloads!
The fastest and cheapest way to get all my .STL files FREE is to donate $5 to help fund class materials ... once I have $3,500 I'll convert all these files to FREE downloads. https://www.gofundme.com/roboguts-kits-lessons