I got a beep out of my #LEGO #Mindstorms #RCX programmable brick. Basically not a big deal... BUT: this time using the *USB* infrared tower and not the *serial* one. And on a 64-bit system. Using the WebUSB API. This is possible thanks to @HangryDave's InfraredBrickTower project, more USB analyzing and reading the device's spec docs again. So firmware update and programming in the #WebPbrick IDE seems to be doable. Pushed the hacky PoC to the github repo, check out src/communication/webusb.htm.