@viv oh hecko you'll enjoy this then

we're going to try and fit over 120 raspberry pi 3 compute modules into 1U

@lm has been working (in their time outside uni semesters) on a board design, first with 2 pis and all the components for testing, then eventually 8 on a single board

https://github.com/wobscale/pirack has everything we've got so far