I printed out the Nordic Softdevice (BLE stack) spec at PostalAnnex. It is about 103 pages. I am about 20 pages in. Some gotchas in there for sure, like the softdevice steals timer0 and lots of other peripherals. There is some crazy stuff in there, like it takes over interrupts. The coolest thing is it can be multiprotocol. I can run more than one softdevice at a time. Wow, that would be nuts. I could talk BLE to central (cellphone) then switch to ANT to mesh with other robots. 

Also, I printed out my BOMs and inventoried my parts. I went to a meetup which was a panel of 5 space startups. It definitely gives you a "it's going to happen" feeling.

I did lots of web research. Hackaday sent out a mass mail and mentioned my robot, but misstated it has pcbs on all sides. It has 2 pcbs.

Makershed offered to give me space at Makerfaire in May, they definitely they want to do retail in a big way. I don't know if I will be ready.

Bill