Please consider that the OpeDrop project is still under development and that you need to have good understanding of the circuit and the basic principles to build such a device. Also the electronic boards with SMD components and high-voltage circuits needs advanced skills to prototype. All the files to build the currenct OpenDrop device, including PCB production (Gerber) files and bill of materials (BOM) can be found in out GitHub repository (see link). If you have questions feel free to ask.