It's not a total scam, but their use of the word 'exactly' is obviously fraudulent. They admit themselves to measurement errors. That being said, it might be good enough and the next version even better. Crowd funding is about funding things that disrupt. If you want to buy finished and complete, go to your local best buy..
I've participated in a number of kick starters, they all have delays and overhype. That's ok with me. I love bleeding edge tech.
The pattern on display here is a classic - make bold (but impossible) claims, attract a crowd of the faithful who want to believe, backpedal and prevaricate when called to back up your claims, collect as much hype and as much cash as possible and then never deliver.
It's the same pattern as was seen with perpetual motion machines several times last decade.
HHere's a question - what would make you change your mind?
I've participated in a number of kick starters, they all have delays and overhype. That's ok with me. I love bleeding edge tech.