121. How big a solar battery do I need to store all my home's electricity? (shkspr.mobi)
395 points | 2025 | author edent showed up | their comment | thread
“My roof is full on both sides. There simply isn't any more room. I do say: Even in the darkest days of winter, they still generate something (unless they're physically…”
122. How I fell in love with Erlang (boragonul.com)
394 points | 2025 | author bora_g showed up | their comment | thread
“I'm really surprised to see the story reached top 3. All of them is true and thanks to Erlang still surprises me. My current stack is Elixir + Rustler on server and Rust…”
123. Show HN: I made a site to tell the time in corporate (corporate.watch)
392 points | 2025 | author steadycourse showed up (and submitted it) | their comment | thread
“I want to get on record that I don't think this is silly at all. I think there is something truthful and useful in dividing and conquering time, it's just that generally…”
124. Cosmos Keyboard: Scan your hand, build a keyboard (ryanis.cool)
383 points | 2025 | author rianadon showed up | their comment | thread
“It’s a surprise seeing this posted while I’m in the middle of traveling. Happy to answer any questions! If you’re curious, the tech stack is static assets bundled with…”
125. Okta Bcrypt incident lessons for designing better APIs (n0rdy.foo)
377 points | 2025 | author n0rdy showed up (and submitted it) | their comment | thread
“thanks for reading the post. It's great to hear that Zig covered both cases. However, I'd still prefer the opposite behavior: a safe (without truncation) default…”
126. Rules for writing software tutorials (refactoringenglish.com)
376 points | 2025 | author mtlynch showed up (and submitted it) | their comment | thread
“I've been thinking for a long time about anti-patterns I see when following software tutorials, so I put together this list of things I think differentiate good…”
127. Litestream VFS (fly.io)
375 points | 2025 | author benbjohnson showed up | their comment (+5 more) | thread
“Yes, Litestream v0.5.3 has been released with a new read-only VFS option:”
128. The Pentium contains a complicated circuit to multiply by three (righto.com)
374 points | 2025 | author kens showed up | their comment | thread
“Author here if anyone has questions...”
129. I hacked my washing machine (nexy.blog)
371 points | 2025 | author timedout_uk showed up | their comment | thread
“It only had access to the internet for a brief second, and even then it was on an entirely separate network because of how I just set up my openwrt router as a client to…”
130. SQLite-on-the-server is misunderstood: Better at hyper-scale than micro-scale (rivet.gg)
370 points | 2025 | author NathanFlurry showed up | their comment (+4 more) | thread
“happy to answer questions!”
131. Flunking my Anthropic interview again (taylor.town)
370 points | 2025 | author surprisetalk showed up (and submitted it) | their comment (+2 more) | thread
“Thanks for this. This is exactly what I want people to feel :) I'm willing to hurt my chances if it helps others”
132. A Navajo weaving of an integrated circuit: the 555 timer (righto.com)
370 points | 2025 | author kens showed up | their comment | thread
“Author here if anyone has questions...”
133. YouTube is a mysterious monopoly (anderegg.ca)
370 points | 2025 | author GavinAnderegg showed up | their comment | thread
“I woke up to a surprising amount of traffic! Some notes based on the discussion. This wasn't coordinated between Jeff Geerling and myself. However, I did mention the…”
134. Ambient Garden (ambient.garden)
369 points | 2025 | author pierrec showed up | their comment | thread
“glad people are exploring this. Some fun details (should be in the "about" section but that's easy to miss): - It's open source, including the code that produced the…”
135. Getting a Cease and Desist from Waffle House (jack.bio)
368 points | 2025 | author lafond showed up (and submitted it) | their comment (+1 more) | thread
“I absolutely do have more to learn about trademarks and appreciate everyones comments :) I was attempting to go for a good faith representation but (obviously) now know…”
136. Fast UDP I/O for Firefox in Rust (max-inden.de)
367 points | 2025 | author mxinden showed up | their comment (+2 more) | thread
“QUIC does not depend on UDP datagrams to be delivered in order. Re-ordering happens on the QUIC layer. Thus, when receiving, the kernel passes a batch (i.e. segmented…”
137. This blog is running on a recycled Google Pixel 5 (2024) (blog.ctms.me)
366 points | 2025 | author cinimodev showed up | their comment | thread
“Thanks! I agree that a VM or container doesn't add to the power usage for a homelab that's already running. I kinda did it for fun and being able to run it off solar. I…”
138. No reachable chess position with more than 218 moves (lichess.org)
365 points | 2025 | author Tobs40 showed up | their comment (+6 more) | thread
“Yes, if Gurobi and my code run as intended and I did not mess up any thinking while simplifying my chess model, then what I did is proof that the maximum number of legal…”
139. The electric fence stopped working years ago (soonly.com)
363 points | 2025 | author stroz showed up (and submitted it) | their comment | thread
“Walking past a house recently, I watched a dog refuse to leave his porch as the owner explained that the electric fence has been broken for years. It hit me, we're all…”
140. Postgres Language Server: Initial Release (github.com)
362 points | 2025 | author juleswritescode showed up | their comment | thread
“The most interesting part is probably the parsing of SQL files. The first issue is that the Postgres parser is complex and always changing, so you can't really roll your…”
141. RybbitL Open source Google Analytics replacement (github.com)
362 points | 2025 | author bill_yang showed up | their comment | thread
“Similar stack to Umami though.”
142. Show HN: KiDoom – Running DOOM on PCB Traces (mikeayles.com)
362 points | 2025 | author mikeayles showed up (and submitted it) | their comment | thread
“I pulled inspiration from this port to a vectrex:, there is a wayback machine link to the authors writeup credited in my writeup. I have seen a lot of ports of DOOM on…”
143. Japan's IC cards are weird and wonderful (aruarian.dance)
361 points | 2025 | author aecsocket showed up (and submitted it) | their comment | thread
“this is my fault for not proof reading this part properly! The part about non-Japan SKUs is generally true for Android phone manufacturers, but Apple eats the cost and…”
144. Training language models to be warm and empathetic makes them less reliable (arxiv.org)
358 points | 2025 | author Cynddl showed up (and submitted it) | their comment (+1 more) | thread
“We used a dataset of conversations between a human and a warm AI chatbot. We then fed all these snippets of conversations to a series of LLMs, using a technique called…”
145. In Praise of RSS and Controlled Feeds of Information (blog.burkert.me)
358 points | 2025 | author curioussquirrel showed up (and submitted it) | their comment | thread
“I do not necessarily think algorithmic feeds are the only thing wrong with social media, but it's certainly one of the major problems. More so if the platforms don't…”
146. PDF to Text, a challenging problem (marginalia.nu)
357 points | 2025 | author marginalia_nu showed up | their comment | thread
“LLMs are definitely the new gold standard for smaller bodies of shorter documents. The article is in the context of an internet search engine, the corpus to be converted…”
147. How I block all online ads (troubled.engineer)
355 points | 2025 | author StrLght showed up (and submitted it) | their comment | thread
“Could you please share what exactly is wrong? I haven't used AI to write this post, that's just my style. I am still figuring it out, so I'd love to hear any feedback”
148. Field Notes from Shipping Real Code with Claude (diwank.space)
354 points | 2025 | author diwank showed up (and submitted it) | their comment | thread
“To be honest, I know there are like a bajillion Claude code posts out there these days. But, there are a few nuggets we figured are worth sharing, like Anchor Comments…”
149. Anubis saved our websites from a DDoS attack (fabulous.systems)
353 points | 2025 | author felsqualle showed up | their comment | thread
“Caching is already enabled, but this doesn’t work for the highly dynamic parts of the site like version history and looking for recent changes. And yes, it doesn’t work…”
150. Show HN: 90s.dev – Game maker that runs on the web (90s.dev)
352 points | 2025 | author 90s_dev showed up (and submitted it) | their comment | thread
“Thank you everyone for the feedback. It's clear that I launched this far too soon. I'll work on the pain points you all noted, and come back in a few months.”