Find out how fast your toy car is.
Use two pairs of IR break beam sensors and some 3D-printing skill to build a Toy Car Speed Timer block to adjoin to your 1/64 scale toy race car track! A Feather M0 Basic calculates the difference in time between the two breaks in the pairs of IR sensors and displays the value on an OLED display. The unit is battery powered so it can be switched on and off quickly without running a main power line to the circuit for use in your track design.
Here’s a sample of the code: