You are no longer question banned. You asked a regex question here, which received a few down votes but wasn't what I'd call a horrible question. Then you asked this extremely vague question about a bar code scanner, which you deleted after it received some down votes. Deleted questions are considered when the block is applied, and can actually count against you more. Thus, you weren't able to ask questions.
Up votes on your remaining posts automatically lifted the block, but do take care - you're right at that edge. If you have a question that is narrowly scoped, like:
I tried the following code to read input from a bar code reader but I get the following error:
.. we can probably help you. In the question you asked, you had no implementation yet - 'where do I start' is a question you need to answer first - we're here when you have some code, or a much more narrow question to ask. The question was simply too broad. Remember to read our guide on how to ask, and take a look at some existing up voted questions on the site to get a better idea of what would be a good fit.
Good luck, and enjoy.