http://blogs.artvoice.com/techvoice/2015/09/17/reverse-engineering-ahmed-mohameds-clock-and-ourselves/
as a frequenter of Radio Shack stores for decades as a hobbyist and an experimenter I knew those parts looked familiar when I saw them. Your assessment mirrors what I thought. He built nothing. He just disassembled a clock and sort of reassembled (if you can call it that) it into a metal suitcase style pencil case. This is suspivious to me given his father's background and the timing coinciding with the gov wanting o import more Muslim refugess; not just a few either.