Calder
207 posts
SURVEYORS PAY $40,000 FOR A SCANNER THAT DOES THIS AND HE BUILT ONE WITH A RASPBERRY PI THEN WALKED INTO A CAVE TO TEST IT
a spinning lidar an imu and a pi bolted into a 3d printed shell
it builds a full 3d point cloud of everything around him as he walks
no gps no signal underground the thing maps itself off its own motion
months of r&d then he took it down into a real cave with his brother
the pros rent those units by the day and charge per scan
he documented the whole build so anyone can copy it start to finish
the lidar and the pi cost him a fraction of one day's rental
everything he scans down there has never been on a map before
savip@savipww
THESE $90 GOGGLES PULL THE VIDEO FEED OUT OF ANY WIRELESS CAMERA NEARBY AND AN 18 YEAR OLD IS MAKING $5,400 A MONTH OFF THEM he tore the receiver board out of a pair of fpv goggles and wired it straight to the antennas now they scan the 5.8ghz band and lock onto any analog camera around him drone feeds baby monitors cheap security cams the ones people trust the most he doesnt sell the goggles he sells the build guide for $30 and the ready made kit for $180 one range test clip does all the work it farms views he drops one link and the file sells itself while he sleeps parts cost him under $90 everything after that is margin
English
$1,344/year in productivity apps. He replaced all of them with a $240/year Claude Fable 5 subscription and an Obsidian vault.
Karpathy showed the wiki. Steph Ango shipped the 5 skills. This guy stacked both into an OS he talks to.
"Hey Jarvis, give me the rundown for today." Claude Fable 5 reads his vault, applies Ango's Obsidian skills, returns a brief in his own frameworks.
What it replaces:
> Motion — $216/year
> Reclaim — $180/year
> Notion AI — $240/year
> ClickUp Brain — $348/year
> Superhuman Assist — $360/year
His stack:
> Obsidian vault (free)
> Claude Fable 5 ($240/year)
> Ango's 5 skill files (free)
> One voice input pipeline
$240 replaces $1,344. Voice-controlled personal OS. No SaaS. No wrapper. No API resale.
Every enterprise tool is speedrunning the exact stack he already shipped.
Full skill file setup + voice pipeline — in the article below.
Yarchi@undefinedKi
English
Bill Gates uses AI for 5 daily tasks. Every one of them saves him hours he can't buy back.
Meeting summaries. Book digests he doesn't have time to read. Speech drafts. Poems. Songs.
At Gates' hourly value (~$500K), the 30 hours a week he saves is $15M/week in bought-back time.
The reveal isn't that he uses AI. The reveal is that his stack is boring — 5 tasks any beginner could copy by tonight.
He didn't build a custom agent. He didn't fine-tune a model. He didn't wait for GPT-6. He opened the chat and started summarizing meetings.
His edge isn't the model. His edge is that he actually uses it, every day, for the boring stuff.
Would you rather save 30 hours a week running his 5 tasks — or spend another year "thinking about learning AI"?
Codez@0xCodez
English
AN ANTHROPIC LEAD ENGINEER ACCIDENTALLY LEAKED HIS PERSONAL OBSIDIAN. INSIDE - NOT CODE OR PROMPTS, BUT A DIAGRAM OF HIS OWN BRAIN, ORGANIZED AS A NEURAL NETWORK
8,893 nodes. 4,729 connections. A $10/month app
opens Obsidian. 21 inputs, ReLU on every layer. The first hidden layer has 26 neurons, followed by 33, then 24, and so on all the way to the output. Thousands of connections flash in real time
this isn’t a conceptual diagram from a blog, but a living brain that powers decision-making within the company. 9,000 documents, each with its own semantic space, all interconnected
it earns about $2m a year for sorting Markdown files into the right folders. The company that builds the world’s best AI maintains its internal knowledge base in the same app that a freshman uses for class notes
three years of discipline and a single open Obsidian tab
you’re reading this on a device where, tonight, you can open that same Obsidian and start building your own vault
chewa.@chewadot
English
Mihoyo, creators of Genshin Impact, just launched Olivia - an AI companion who lives on your desktop, plays piano while you work, & exchanges letters with you. 100k downloads on day 1
The brilliant part is the GTM. Olivia debuted on Bilibili last summer as a virtual pianist, spent months building a fanbase and answering fan letters - all before shipping as a companion
She launched with a built-in audience - hundreds of thousands follow her as a Shanghai university student majoring in piano (with a minor in psych), who loves old movies and rainy days
Character-first AI with distinct personality, recognizable IP, and world building beats faceless agents - this is the way
English
Glean $7.2B. Harvey $11B. Sierra $16B. All built on the version of Second Brain Karpathy didn't show you.
Karpathy's LLM wiki is the toy. Free, simple, enough for your own notes.
The grown-up version is RAG. Instead of showing the model everything and hoping it finds the answer, RAG fetches only the pieces that matter — and answers from those with the source attached.
What that gets you:
> Works at any size — folder of notes or a company's entire document history
> Doesn't hallucinate — every answer traces to a real document
> Cheaper — reads a few relevant pages, not your whole library
> Answers what nobody wrote down — connects pieces across files into an answer that never existed in one place
Glean does this for company knowledge. Harvey for law. Sierra for customer support. $34.3B combined. Same trick.
Every business sitting on a pile of documents needs this and can't build it. You can build it and sell it.
Engineers who've shipped one get paid a premium over everyone else.
Bookmark this.
chewa.@chewadot
English
一个13岁的小孩，把自己写的交易脚本免费传到了网上。
两个月后，一个陌生人给他转了2万美金。
事情是这样的——
学校放了个14天的假，他朋友都在打游戏，他窝着写了个Polymarket的简易终端。弄完之后，直接把全部代码扔到GitHub上，然后就回学校上课了，再没管过。
两个月后他打开GitHub一看，傻了。
几百条评论，全是用了这套代码的交易员在留言。
其中有一条特别显眼。
一个交易员说，靠这个脚本一个月赚了20多万美元。问他钱包地址，说要感谢他。
然后2万美金就打过来了。
这小孩没卖课、没搞订阅、没把代码藏付费墙后面。
就做了个有用的东西，免费发出来，然后回去写作业了。
剩下的，互联网帮他搞定了。
中文
24 years old. No coaching badge. $6,450/month reviewing form for 430 lifters — and she's the one on the leg press in the video.
She built the AI form checker with Claude. Users upload a clip of their set — squat, leg press, whatever. Minutes later they get where the form breaks down, the depth they're leaving on the table, the exact cue to fix it, and what to do next week to progress.
The thing you'd pay a coach $80/hour to watch for. Delivered while you're still racking the weight.
430 subscribers. $15 each. $6,450/month recurring. Her cost to run it: under $70.
A personal trainer watches one person at a time. Hers watches 430 at once, at 3am.
She's not selling hours. She sold a system that runs while she works out.
Full setup — form logic, feedback templates, pricing — in the article below.
Drake@drakefomo
English
One 1-page gist from Karpathy. 21M reads. 41,000 stars in weeks. The Obsidian CEO shipped code the same day.
Karpathy flipped every note app: Obsidian is the IDE. Claude Code is the programmer. Your notes are the codebase.
3 commands run the whole system.
Ingest — drop an article, a podcast, a PDF. Claude splits it into atomic pages linked to everything you already know.
Query — ask anything. Claude answers from your notes, in your voice, citing your pages instead of guessing from training data.
Lint — once a week Claude walks the vault, kills stale claims, wires orphan notes back in.
Then Steph Ango, Obsidian CEO, moved. No "Ask AI" button. He shipped 5 skill files teaching Claude Obsidian's native language: wikilinks, Canvas, Bases, the CLI.
Karpathy runs it on 100 articles, 400,000 words. No vector DB. No embeddings. No $20/mo app. Just markdown + an agent that never gets tired of the boring part.
Your vault has 3,000 notes nobody will reopen. His reads all of them by breakfast.
Full 3-command setup + the 5 skill files — in the article below.
Spike 1%@SpikeCalls
English
🚨 Warner Bros spent $79,000,000 making Tom and Jerry live-action in 2019
a 24-year-old spent $50 last month and cleared $11,900 doing the same trick in CapCut
turning old cartoons real is blowing up on Douyin: the original Tom and Jerry up top, the same shot rebuilt in 3D below, a jacked bulldog gripping a real cat. she copied it and hit TikTok and Reels first.
> Research: find the clip pulling 10x a channel's normal views: 1 day
> Claude: break the cartoon into a shot list, frame by frame: 20 min
> CapCut: rebuild each shot photoreal, add AI voice and captions: 40 min
> Make: auto-post to TikTok, Shorts, Reels, pull the views at 48h
$50 a month in tools. the cartoon does the hooking for free.
Hollywood took 2 years to make one cat real. she ships a new one daily.
her whole workflow is in the article above👇
Fokki@0x_fokki
English
A 13-year-old uploaded a trading script for free. Two months later, a stranger sent him $20,000.
He spent 14 days of his school vacation building a simple Polymarket terminal while his friends played games.
When it finally worked, he published the entire repository on GitHub, returned to school, and forgot about it.
Two months later, he opened GitHub and found hundreds of comments from traders using his code.
One message stood out.
A trader claimed the script had helped him make more than $200,000 in a month. He asked the boy for his crypto wallet because he wanted to thank him.
Then $20,000 arrived.
The boy had not sold a course, launched a subscription, or hidden the code behind a paywall.
He built something useful, gave it away, and went back to class.
The internet did the distribution while he did his homework.
RetroChainer@RetroChainer
English
@stark0xbt Would you let your wife go to a training session like that?🤣🤣
English
Este video tiene 10.2 millones de vistas. Todos vieron la broma. Nadie vio el negocio detrás.
Ayer les traje a la pareja con $9,900. Hoy Claude me sacó la cuarta.
Ella no es la entrenadora. Es la clienta.
Paga por sus sesiones. Y filma cada una.
$7,400 al mes de marcas de activewear y suplementos que nunca aparecen en pantalla. Su entrenamiento ahora es gratis — y encima le paga.
En 0:07 se ve por qué funciona — ambiente íntimo, sin producción. Nada que una marca simule en estudio.
Le pedí a Claude que abriera sus DMs de marca. 4 contratos activos, todos firmados en los últimos 90 días. Cada marca la buscó a ella.
Su modelo:
> 3 sesiones por semana con el mismo entrenador
> Claude corta 20 clips, escribe captions con voz de marca
> Las marcas pagan por aparecer en background del estiramiento
Todos filman esto para la broma. Ella lo filma para el retainer.
Mañana les traigo la quinta.
Español
$5,800 A MONTH FROM PILATES CLIPS. NO PRODUCT. NO COURSE. NO STUDIO. JUST THE LINKS UNDER HER VIDEOS.
No agency. No brand deals. No personal audience being sold.
She got into reformer Pilates when everyone else was too. Filmed her own sessions. Clean, close, aesthetic.
At 0:02 the whole reformer is in frame — that's the machine she has affiliate-linked in her bio. Every time a beginner clicks and buys, she earns $30-80.
Her loop:
> Films a few minutes each session — no shoot days
> AI cuts clips, writes hooks, captions, on-screen cues
> Schedules posts across platforms
> She decides which products she'll actually recommend
At-home reformers run $500-2,000. Add grip socks, mat, resistance bands, outfit. Her audience isn't casually watching — they're deciding whether to start.
$5,800 a month in commissions. Zero inventory. Zero clients.
AI is the editor. She's the judgment.
Would you keep waiting to launch your own product — or start collecting on the gear people are already buying?
Rich@RrichPRMR
English
MADE IN 17 MINUTES. $64K NET IN 30 DAYS.
2,619 men. $13.99 each.
Do the math.
Porsche GT3 RS parked in the driveway.
Dashboard showing $66k ready to withdraw. One AI model quietly printing money.
Built fast. Zero ongoing costs. Content that converts on autopilot while you live.
The girl doesn’t exist. The six-figure revenue from models like her does.
Rugikk@rugikkk
EVERYONE USES AI FOR CONTENT. ALMOST NO ONE HITS THIS LEVEL. Pores. Sweat. Eye reflections. Skin that looks alive. She’s not real. One reference image + prompt in GPT Image 2 for the base. Then animate with Kling 3.0 Pro using start and end frames for natural motion. All inside Arcads AI. This is the new standard for premium AI UGC and influencers that actually stop scrolls and convert. The girl in the close-up doesn’t exist. The quality and money this workflow unlocks do.
English
ONE PHONE ON THE FLOOR. +$4,900 A MONTH. SAME CLASSES SHE'S BEEN TEACHING FOR YEARS.
No course. No brand deals. No transformation story.
She props her phone at mat level during class and lets it run.
At 0:02 — no crew, no angle, just phone-height view of her adjusting a girl mid-stretch. No staging. Just the room.
People don't stop for tutorials. They stop for moments.
Her loop:
> Phone rolls during every class
> AI finds moments, cuts clips, writes captions
> Schedules a full week from one paid class
Empty slots became full. Full became a waitlist. She raised prices, added an evening slot — sold out from the list.
+$4,900/month from the same job.
The room is already paying you. The camera makes the room bigger.
Would you keep teaching the same class for the same paycheck — or let the room fill itself twice?
Rich@RrichPRMR
English
@caldervol I'm sure that when the number of clients doubles, there won't be fewer clients
English
@vip_shrestha and just imagine how much you could earn once big brands take notice
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@caldervol Without brand deals—though it seems to me that brand deals will be coming soon, too
English