I get this error: exec: "avr-g++": executable file not found in $PATH It seems also to not like the cores I've found, which are three years old. I can't seem to find anything newer. I'm trying to build a fairly simple capacitance meter. I'm using a Mac, but sorted through various problems with drivers. Any help would be appreciated!
What's attend84? Did you mean ATtiny84?
For ATtiny* support in the Arduino IDE, see https://arduino.stackexchange.com/questions/21769/adding-attiny-to-arduino-ide-attiny-variants-platform-txt-file-missing One answer leads to a relatively new Github resource.
damellis/attiny is actually pretty old and not actively maintained. I recommend using this one instead: https://github.com/SpenceKonde/ATTinyCore
pert: damellis/attiny is actually pretty old and not actively maintained. I recommend using this one instead: https://github.com/SpenceKonde/ATTinyCore
OK. I didn't know damellis/attiny had been abandoned, but it does look like the last update was more than 11months ago. I don't work much with the ATtiny, but I did recently use Damellis for an ATtiny85 project.
I don't think it's abandoned, just not very active. damellis/attiny is a very minimal hardware package that really doesn't need much maintenance so that's fine for the most part. I was involved in doing some work on it for Boards Manager installation support and at first things were moving along well but then it got to the point where pull requests for minimal, obvious, yet important fixes were getting ignored for months. In the meantime I discovered ATTinyCore, which is much more rewarding to contribute to thanks to the great work DrAzzy does!
ATTinyCore is a much more complex project in that it includes a complete core library and bundled libraries that have been modified for ATtiny. It also supports many more parts and configurations.