This is probably one of the more 'scrapyard' submissions I've heard so far. The machinery as the percussion was really cool, and the odd time signature felt very fitting for this kinda sound. Nice interpretation of the theme.
My main piece of feedback is that I would've liked to have heard a little more variation in the melody. The initial statement is cool, but I think if you changed it up each iteration it would keep it interesting. Like if you adjusted the melody to play over different harmony, or changed up the syncopation every so often would have a fairly big impact on maintaining interest IMO.
Thanks for sharing what you've got, keep up the good work :)