Write up your project and get a free Espruino! (2021)

Although I'm too late for this little "contest" I would still like to document my most recent Espruino project (a small "lava lamp" replacement, see the current "work-in-progress" on GitHub) for my students - just to give them an idea how they could publish their own projects (which are likely based on Maker Unos which is why I won't qualify for a free Espruino anyway).

My question is: am I allowed to use images and diagrams from the Espruino web site in my documentation and - if so - how should I "cite" them? (an answer is no longer necessary, I just finished the write-up)