Minecraft HDL, an HDL for Redstone

Minecraft HDL lets you write simple hardware-style code and auto-build it as glowing redstone contraptions in Minecraft. Three McGill students made it as a teaching tool, and they’re very clear: it’s not perfect, it’s worse than hand-made builds, and it can’t do memory (no feedback loops, no counters). Cue the comments: one camp cheers the joyful absurdity—“objectively useless but really fun”—while another mourns, “can’t have feedback? That’s sad.” The biggest drama? Whether this is a delightful toy or a dead-end until it can remember anything. HN mod dang pops in with a polite throwback to an older thread and reminds everyone reposts are fine, linking the past discussion, which only stokes the “why hasn’t this evolved?” crowd.

Then the memes roll in. One user imagines “flip flops” (tiny memory bits) as villager minecarts battling copper bulbs, and suddenly optimization talk becomes comedy gold. The community’s hottest take: it’s glorious nonsense, perfect for teaching how hardware differs from software, even if it’s impractical for big builds. Others want “optimizing passes” like a real chip tool, dreaming of leaner, chunk-safe circuits. Between the speed-run gif of a 2-bit adder and the “no memory” limitation, the vibe is equal parts giddy science fair and playful roast. Verdict: educational chaos with irresistible Minecraft drama.