See also the CH32V003 [0] (more expensive variants also available), a neat, cheap and standalone RISC-V with plenty of modern & flexible peripherals, good package options, single wire debug and an open toolchain [1] for ~20c per.
Mitxela has a great article on them [2] and I totally agree they have a lot of the same joy & simplicity of the ATTiny - but with the added bonus of lots of interesting DMA controller misuse!
The peripherals have a very STM feel (in a good way) which perhaps isn't surprising given WCH's history.
Mitxela has a great article on them [2] and I totally agree they have a lot of the same joy & simplicity of the ATTiny - but with the added bonus of lots of interesting DMA controller misuse!
The peripherals have a very STM feel (in a good way) which perhaps isn't surprising given WCH's history.
0: https://www.wch-ic.com/products/CH32V003.html
1: https://github.com/cnlohr/ch32v003fun
2: https://mitxela.com/projects/badge