Engineering & Code explores the full stack of modern tech—from bits and transistors to cloud fleets and formal proofs. Here you’ll find clear, rigorous walk-throughs of software design, embedded hardware, security architecture, and the physics that underpins them, always paired with code, schematics, and reasoning you can put to work.
My son had a physics assignment to estimate the power required to raise a garage door. He needed to make a video for this. I wanted to build an interactive simulation to teach about a simplified linearized model versus what differential equations can actually do in the real world. Now that I’m using AI to […] read more
A very cool new compiler trick may point to a much bigger idea: a new way to think about how programs and learning fit together. In fact, this may actually be a new way to think about computation itself. The core idea is that programs can be both specified and trained. How? Cheng Lou released […] read more
Texas introduced us to cowboy hats and electric gates, in our case a a Nice Apollo 1500LA. It’s a long-running linear actuator swing gate: simple enough to be something I can repair, but just complicated enough to be difficult. The whole gate is really two different parts: a 636 control board and a 816 actuator. […] read more
This tree is in my backyard, right behind our cabana. Go ahead, move it around and I’ll explain below how an iPhone + claude + plus some cool geometry math made this happen. Loading tree… I’ve always been fascinated by trees. I love how they grow in seemingly random ways, yet also obey a fixed […] read more
While at DARPA I once debated that Cybersecurity would at some point be solved. I argued that if we just built and implemented software correctly, DEFCON would be no more exciting than whatever the people who make bolts and hardware do for a convention. Boring, commoditized and expected. Well, I’ll concede that cyber isn’t getting […] read more
It’s sunday night and NeurIPS is over. The Reagan National Defense Forum is over, and I’m sitting here in Fort Worth marinating in FOMO tracking the news from the weekend. Instead of live hallway conversations in San Diego or Simi Valley, my consolation prize is to deep dive into the hardware details that actually drive […] read more
When President Trump signed the GENIUS Act on July 18, 2025, he didn’t just regulate stablecoins—he legitimized an entire technology stack that will become core infrastructure for defense and intelligence agencies. By requiring full liquid reserves and exempting compliant stablecoins from securities regulations, the Act transforms what was once speculative technology into government-grade payment and […] read more
A Chinese research team just pushed quantum computing one step closer to breaking the encryption that secures your bank account. The security that protects your credit card, banking, and private messages relies on a simple mathematical bet: it would take classical computers longer than the age of the universe to crack a 2048-bit RSA key. […] read more
Communication is the most important skill to sell your ideas. If the last decade has taught us anything, it’s that ideas don’t win because they’re right—they win because someone makes them impossible to ignore. The best communicators I've seen combine advanced graphics with deep understanding of a subject. I start simple and show how to get started in web graphics. read more
(warning: I’m not trying here to explain something to folks outside computer science, but more summarize something awesome I’m learning that is changing how I write code) As software systems grow increasingly complex and automated, ensuring correctness becomes a monumental challenge. In a future of automatically generated code, certainty is both elusive and critical. Enter […] read more