Using Arduinos and Ethernet for turnout, sensor and signal control with MQTT in JMRI - Part 1

I'm still having RS485 issues so it's time to have a serious look at what alternatives there are with a view to getting rid of the RS485 bus. Here I'm getting an Arduino Mega network connected and trying MQTT as a more suitable TCP/IP compatible protocol alternative to C/MRI. Some links - I don't benefit in any way from these being clicked. Arduino random mac address generator https://ssl.crox.net/arduinomac/ Ethernet boards https://www.amazon.co.uk/dp/B07V6GMPHZ?psc=1&ref=ppx_yo2ov_dt_b_product_details The updated Arduino sketch from the video https://github.com/Vintage80sModelRailway/Vintage80sModelRailway-ArduinoMultiplePWMBoardControl/tree/main/mqtt_basic_updated #modeltrains #modelrailways