Quantity   Component name
2 × boost CC supply from ebay http://www.ebay.com/itm/281517508217?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT Got a full refund from china for two non-working properly modules, later turned to be finally on production with added extra opamp and a few misc elements, still good, but different from what we've made