OK200 WEB Programmer This app lets you upgrade the firmware of an OK200 module with a USB cable + Chrome It is a port of the webdfu project by devanlai. A demo of that project can be found here. Tech stack React TypeScript Sass Webpack Based on the following guides Reference Icon Library TypeScript Handbook React/TypeScript Cheat Sheet FlexBox Guide https://reactjs.org/docs/static-type-checking.html#typescript https://webpack.js.org/guides/typescript/ Chrome Tutorial on WebUSB USB Vendor IDs dfu-util source code