O-ESD release v1.0 consists of (1) Bill-of-materials.txt with the complete list of all hardware elements. (2) Hardware folder with subfolders for each part of O-ESD. Every subfolder contains production files (gerber files, drill files or drawings) and a schematic where appropriate. (3) Software folder contains software for Arduino Nano v3. (4) Measurements folder with results of experimental verification. O-ESD is released under CERN Open Hardware License Version 2 - Strongly Reciprocal (see LICENSE file) Additional information can be found at the project website https://o-esd.etf.bg.ac.rs