I have just open-sourced my little sound direction detection project here: entron/esp32_sound_direction. The idea is simple: use an ESP32 and two microphones to estimate where a sound is coming ...
The following blog post is drafted by ChatGPT based on my discussion on this topic with some of my edits. I have been working on a small hobby robot whose goal is intentionally modest: place i...
从费曼的挑战者号调查谈起对现代管理文化的反思
I have never encountered a problem that required a variational autoencoder (VAE) to solve. I hope I never will. They look complicated, and I generally try to avoid learning man-made, complicated c...
本文是我和ChatGPT对这个问题讨论后让ChatGPT写的总结。 在现代中国的公共语境中，“民族劣根性”这一词汇常常以一种似乎“自我反省”“勇于直面问题”的姿态出现。它似乎象征着一种清醒，一种敢于自剖的勇气，甚至被一些人视为知识分子的“诚实”。然而，当我们真正追溯这一概念的历史来源、它所依赖的理论背景，以及它在中国语境中的传播路径时，却会发现：所谓“中国人的劣根性”，并不是源自中国自...
This is based on my discussion with ChatGPT. I’ve been thinking about this topic for a while, and what motivates me is the following observation: People with knowledge—such as technical profession...
The classic split between generative and discriminative models was introduced for supervised learning: compare Naïve Bayes (model $p(x, y)$) with Logistic Regression (model $p(y\mid x)$). In conte...
My BLDC Experiment Setup I learned that the joints in robots are mainly using BLDC motor + FOC control. To have a better understanding, I bought two sets of small BLDC + MT6701 magnetic encoder +...
为什么有的时候战争反而促进了科技的进步
在科学的殿堂里，也有属于艺术的杰作。《费曼物理学讲义》（The Feynman Lectures on Physics）正如文艺复兴的西斯廷天顶画，它不是一部普通的教材，而是一场灵魂与真理的对话。 当年，加州理工学院决定彻底重塑本科物理课程，邀请理查德·费曼亲自授课。那是 1961 年，他没有沿用任何现成教材，而是选择了最艰难也最纯粹的道路：从零开始重建整个物理世界的逻辑。 一、革命性的...