The main stumbling block for the previous Pis was a lack of real-time OS e.g. RTLinux port.
This was discussed recently on Proggit recently https://www.reddit.com/r/programming/comments/3zf04e/where_a... after I blogged about how I couldn't find a Pi robot kit to buy my kids last year: http://williamedwardscoder.tumblr.com/post/136598180858/wher...
The main stumbling block for the previous Pis was a lack of real-time OS e.g. RTLinux port.
This was discussed recently on Proggit recently https://www.reddit.com/r/programming/comments/3zf04e/where_a... after I blogged about how I couldn't find a Pi robot kit to buy my kids last year: http://williamedwardscoder.tumblr.com/post/136598180858/wher...