translation.en: I said the electronics are open-source, because at the heart of this printer there is something I'm really attached to: these Arduino boards, the motherboard that sort of powers this printer, is a project I've been working on for the past seven years.
translation.zh: 就像我说的，所有的电子组件都是开源的 这台机器的关键组件 是我个人最为关心的 Arduino主板 这台打印机的核心部分 这是我的一个项目 已经开展七年了