This badge is made for IT Girls campaign and it resembles their campaign robot logo.It's modeled by Tindie badge. Using almost same BOM. You can reade more about that here:https://hackaday.com/2017/10/06/bom-cost-optimization-and-tindie-badge-engineering/ Only difference is battery holder. We used this one:CR1220 from: https://www.ebay.com/itm/CR2032-CR2025-CR1220-CR2450-Coin-Button-Cell-Battery-Holder-Socket-Case-Black-TS/162688247506?var=461701833629 Same, fast blinking LEDs were purchased here:https://www.ebay.com/itm/100pcs-5mm-LED-Straw-Hat-Fast-Flashing-2pin-Water-Clear-Emitting-Diode-Lights/292576489653?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649Similar Switch: https://lcsc.com/product-detail/Toggle-Switches_Korean-Hroparts-Elec-K3-1296S-E1_C128955.htmlFor IT Girls, Vedran Alajbegovic
