I sketchnoted all talks at the Ruby User Group Berlin in August 2015. The RUG::B was hosted by bitcrowd. They provided two awesome curries.

Florian on Unicode:

Sketchnotes from Florian's talk about Unicode.

Hukl on Hackers.

Sketchnotes from Florian's talk about Unicode.

Rin on neural networks with Ruby.

Sketchnotes from Rin's talk on neural networks with Ruby