Hello all, Mechanical engineer here, trying to workout some EE problems, and build my first layout at the same time. Due to the cost savings, I started with a simple DC set, and built a DCC++ base station using an arduino uno and a Flashtree motor shield. (https://www.amazon.com/gp/product/B07VCFQCY8/ref=ppx_yo_dt_b_asin_title_o02_s00?ie=UTF8&psc=1) For my first test I tried to program a Digitrax TF4 decoder, however I kept getting a 308 error, that the base station isn't getting a response from the decoder. Anyway, looking for some advice for trouble shooting this. Thanks all!!