So it will be just bareboards floating in 'space'? Wouldn't they need any thermal / radiation protection of the system? When I look at theirs components list that they are suggesting, I am wondering if they can withstand the operating temperatures at that altitude, launch vibrations, possible radiation ...
I am not a space electronics expert, but thought you would need abit more specialised components, or at least versions of them that are manufactured to handle the harsh conditions. ATMEGA328P-AU, LSM9DS1, BME680, etc seems all to be only rated at -40 to 85'C.. I am also interested in the crystal specs, which are not shown, I would guess it would need to be a special crystal that can withstand the launch?
Another thing that worries me is the fact that they are selling a DIY kit to assemble it yourself? If you are experienced in soldering you can do it, but what about a kid, which I am sure is a market (schools, STEM ...) that they are trying to catch, is trying to assemble it .. one bad joint and the system may fail during launch ... I cannot see flux, or solder wick in the package, why do I need that desoldering pump?