Are there any mailing lists for discussing TINI hardware/software?
Yes. Dallas Semiconductor runs the "TINI List". To join this list, send email to majordomo@iButton.com. Make sure the phrase "subscribe TINI" appears in the body of the message (and turn off the HTML formatting on your e-mail - this message is read by program, not a human!). When you sign up for the list, you will get an e-mail that tells you how to post.