The Amazing $1 Microcontroller (2017)

But that’s the crux of the problem for the tinyAVR — by shedding many of its megaAVR roots, Microchip ended up with a wonderful microcontroller that will be challenging to use for a large base of Atmel fans: indie developers and hobbyists who use low-cost, open-source programmers (which don’t support the UPDI interface). I also hope these open-source projects can add UPDI support to their tools, so that hobbyists and indie developers can start integrating the tinyAVR into their projects — it’s a much better part, and if you’re an AVR user with access to Atmel Studio, you really ought to buy an Xplained Mini board and take it for a spin. Like many of the parts reviewed here, the biggest problem for hobbyists and indie developers is the tiny online communities and lack of GitHub repos with open-source projects that use these chips.

Source: jaycarlson.net