The UNO was always my recommendation for beginners in "Physical Computing" because of its limited resources. With that, beginners quickly recognize that resources are never endless and so have to adopt "efficient coding" in an early stage of learning. With the R4, that unique "feature" has gone and the UNO brand is watered down the river of more and more and more features, competing with countless developer boards on the market.

Leave a comment what your thoughts are.