Just before the holidays, an issue with the Rescue Shield 2.0 (which I have at times referred to as “2.x”) was identified. The issue involves problems reading/writing to parts that have certain startup timer (SUT) fuse values set.
There is some more information about the issue on the forums and in a previous post here and I created a Known Issues page on the wiki.
While this issue will not affect most users (this is why no one, including me, noticed it until now), I am currently working on a fix. Initially I had hoped that I could fix the problem in software, but after spending far too much time pursuing that approach, I have decided to address it with a hardware change instead. This should make for a much more robust solution. I’m in the process of revising the hardware this week and hope to release a new version of the shield in the near future.
As soon as I heard about the issue in December, I stopped taking orders for Rescue Shield kits. Kits and PCBs will show up as out of stock until I release the new version.
I’ll post another update when I have an estimate of when kits will be available again.
Thanks for your patience!