I have been in the space with my STM32 scope, tried to kickstarter it but I have failed. So I have made something smaller and simpler, and I have got it funded in 3 days (small project but huge satisfaction).
https://www.kickstarter.com/projects/1673888854/adc-dac-and-gpio-universal-raspberry-i-o-hat-8-por
well done, I hope there will be many more out of the space
well done on reaching your target, would be interested in hearing how the whole process went when you are done
nice one