Great work by Dmitry.GR reverse engineering and hacking wireless eInk price tags to make updating grey-scale picture franes, Great work was done discovering eInk control waveforms to show greys and yellows and whites on 2 colour displays. See the full project here: https://dmitry.gr/?r=05.Projects&proj=29.%20eInk%20Price%20Tags
HackerMaker is the culture and philosophy of creating, repairing and inventing out of whatever is available. Raw materials are no longer the raw materials with which we work. Our prime materials have been extracted, cooked, processed, moulded and shaped cheaply and in large qualities to fit some purpose other than ours.