I'm using the attiny85 to program addressable leds and I found DrAzzy's core produced larger programs when compiled than damellis' version. So even though the project is 4+ years old and apparently abandoned, I went with that because it freed up much needed space for additional led animations versus the newer core from DrAzzy.I was a bit disappointed the newer core had more bloat in it apparently?
I had some trouble to install the latest ATTinyCore in Arduino 1.8.9, following the directions on the GitHub site.Adding this URL Code: [Select]http://drazzy.com/package_drazzy.com_index.json to Preferences > Additional boards managers list accomplishes nothing, despite changing the order of entries, restarting the IDE, etc. No additional boards appear in the boards list, and no error messages are emitted either. I have two other entries in that list, for the Pololu Astar boards and MiniCore, which work fine.Problem solved by manually placing the unzipped file in the sketchbook/hardware directory as instructed.
you need to actually use board manager to install