Lap Timer (laser-cut)

thingiverse

This is a lap timer designed specifically for line following robotics competitions, notably utilized in the LVBots May 2018 line following competition. The download includes SLDPRT, STL, and DXF files. This lap timer employs an A-Star 32U4 Prime (with LCD) and a VL6180X Time-of-Flight Distance Sensor Carrier with Voltage Regulator. It is adjustable both horizontally and vertically and laser-cut from 1/8" (~3mm) acrylic. The design utilizes #2 screws, so you will need the following hardware: * 9 × 3/8" #2 screws * 2 × 1/2" #2 screws * 11 × #2 nuts Please note that these screws are for holding the acrylic pieces together (you will also need additional hardware if you are mounting your electronics to the base plate). You might also consider using some acrylic cement to permanently bond the pieces together. As mentioned earlier, this design is intended for use with an Arduino-compatible A-Star 32U4 Prime (with LCD) and a VL6180X Time-of-Flight Distance Sensor Carrier with Voltage Regulator. To mount the electronics, I used some 1/4" M-F aluminum #2 standoffs (with additional #2 screws and nuts) for the A-Star 32U4 Prime and two 1/2" #2 screws and nuts for the VL6180X Time-of-Flight Distance Sensor Carrier. There is room to place a battery pack on the base plate as well. I recommend using some double-sided tape to secure it. You can find more information about the competition and the electronics used in this build in the LVBots May 2018 line following competition blog post.