This github contains the the files needed to build a "train speedo V2" found here:
https://www.instructables.com/Model-Train-Speedometer-V2/
They are
A PIC hex file for a pic16f18445
A zipped up version of the project for MPLABS IDE X
A Circuit
A Gerber file for the PCB
User Docs pdf
Thanks for looking, have fun.