This is a EEPROM flashing tool for the HBJ11 cards designed at the Warsaw Hackerspace.
It's made up of two parts:
An USB/I2C adapter based on an STM32 Bluepill devboard. See bluepill for more information. You will need one physically plugged into your machine and wired up to a PCIe socket to insert the HBJ11s into.
A WebUSB-based flashing tool that will run under any Chromium-based browser (eg. Chrome, Edge. See web for more information or start WebI2C now.