1bit shares the TELEZ BioReactor Controller project.  Teensy runs a collection of pumps, HX711-based load cells, and associated I/O in a 3U rack.

This homebrew solution replaces about $1200 of Siemens hardware, with the added bonus that users will be able to monitor the bioreactor remotely using a custom Android app, thanks to the addition Particle Electron providing cellular data.

TELEZ is used in a variety of equipment (PDF).