Flawless. Absolutely flawless. As a programmer I am interested in the methods used to link a digital output to a physical connection being made; possibly an Arduino or something occasionally checking for bubble requests?
（英语译为简体中文：完美无缺，绝对完美。作为程序员，我很好奇如何把数字输出连接到实际的物理动作，也许是 Arduino 之类的东西，定时检查泡泡请求？）