Summary

Remix. Fits wifi shield and track connections. As there only needs to be one power connection using the DCC-EX power shield I closed off the Arduino power to limit mistakes. Increased sturdiness of base for screws. I used #4 x 3/8 inch screws. I used tree supports for the top and printed upside down. When printing the base I made sure the bottom was flat on printer plate. I used Bambu Labs A1 series printers. Enjoy!