The Arduino site didn't have enough activity during the beta, and has been closed. You can download the data dump of all questions here.
Q&A site for users of the Arduino platform and its development environment.
Needs Work – 2.5 answers per question is good, only 1 answer per question needs some work. On a healthy site, questions receive multiple answers and the best answer is voted to the top.
This proposal didn't have enough activity during the beta. It was closed 6 years ago.
You could try proposing a variation of this site that you think will have a better chance.