Arduino UNO DCC shield

DCC shield for the Arduino UNO.

Includes standard functions, such as DCC input, DCC Ack, Button and LED.

In addition, it supports

1. Connecting a RS-Bus feedback print (such as https://oshwlab.com/aikopras/rs-bus-smd or https://oshwlab.com/aikopras/rs-bus-tht)
2. An extension header, which can for example be used to connect a LCD display, identical to my other DCC decoder boards