Electronics software
Although we tend to classify engineers into different specialisations (such as mechanical, electrical, civil, etc), the reality is that there are very few mechanical projects these days which don't include any electronics.
Your device will need to use electronic software and hardware for its operation. In these two videos, Michael talks about the best types to use, and how to make the most of them.
Download this video (20.8 MB) or any of the videos for the 'Your project' lecture series 
Watch a YouTube playlist of all the videos for the 'Your project' lecture series
Download the slides for this video (1.8 MB), or the slides for any of the other videos on 'Your project' .
Electronics hardware
Download this video (54 MB) or any of the videos for the 'Your project' lecture series