In my previous job, they began using scrum agile to develop hardware. I don't know if it ever worked because I left. But when I was there, it was more stressful than before agile scrum.
I've been through a couple attempted transitions to agile for hardware. There are some agile elements that I think could work in hardware development but the people pushing the changes have always been too stubborn to recognize when SW agile methods just don't make sense for HW.
