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I Built My Own Ambilight for Under ₹1k, on the Same ESP32 That Runs My AI Desk Pet

TLDR: I wrapped 102 LEDs around my monitor and drove them from a single ESP32 running firmware I wrote myself. The strip cost ₹449. The whole build came in under ₹1,000. The same ESP32 also runs Dexi,

blog.shravanrevanna.me

Wire Ampacity Chart1d ago · 12 min read

Modeling Ampacity as a Lookup Table: A Hardware Engineer's Guide to NEC Table 310.16

Every hardware project eventually hits the same wall. You have a load, a length of wire, a connector, and a fuse, and someone asks the deceptively simple question: what gauge do I need? On a breadboar

wireampacitychart.hashnode.dev

Walid Hassan TahrimSep 3 · 7 min read

Tips for Building and Debugging a Secure Ubuntu Homelab with Tailscale & Docker

Setting up a home server is a rite of passage for any developer. But there is a massive difference between getting a server to ping on your local network and building a secure, easily manageable envir

first-homelab-setup.hashnode.dev

Christoph DieckAug 20 · 6 min read

I Built a Paving Planner Because Herringbone Patterns Made Me Lose My Mind

The story starts with dirt and confusion Early this year I cleared out a patch of wild growth in front of my house and prepped the ground for paving. The surface was ready. The stones were stacked. An

slashgordon.hashnode.dev

circuitrocksJul 30 · 2 min read

Build a Buzzing Hazard-Alert Wearable With an ESP32 and Gas Sensor

Spend a Saturday turning a gas sensor and a coin vibration motor into a wearable that taps your wrist the moment the air turns dangerous. That is the weekend takeaway from a proof-of-concept patch out

circuitrocks.hashnode.dev

circuitrocksJul 26 · 2 min read

Portable Commodore 64: A Raspberry Pi Retro Handheld

The Commodore 64 still holds the record as the best-selling single computer model ever made, and more than four decades after its 1982 debut people keep dragging it back into the present. For a studen

circuitrocks.hashnode.dev

circuitrocksJul 23 · 2 min read

ESP32 Bowling Scoring System Beats a $120K Proprietary Quote

A site reliability engineer bought an abandoned eight-lane bowling center in a small Midwestern town for \(105,000. The roof leaked, the electrical service was flaky, and the pinsetting machines were

circuitrocks.hashnode.dev

circuitrocksJul 19 · 3 min read

Raspberry Pi Zero 2 W E Ink Typewriter: A Focused WriterDeck

A blinking cursor in a browser tab is where good writing goes to die. Notifications, open chats, and a dozen other tabs all compete for attention that should be going onto the page. That is the proble

circuitrocks.hashnode.dev

circuitrocksJul 10 · 2 min read

Pi Zero Cyberdeck: A Pocket Linux Rig With a 3.5" Screen

Pocket cyberdecks are having a moment. The idea is simple: take a full Linux computer, bolt on a tiny screen and keyboard, and shrink the whole thing until it slips into a jacket pocket. Designer ndej

circuitrocks.hashnode.dev

circuitrocksJul 9 · 2 min read

The PocketMage: An Open-Source ESP32-S3 E Ink PDA Goes Live

Picture a cafe at 7 a.m.: laptops glowing, phones buzzing, and one person quietly typing on a pocket-sized slab with a matte, paper-like screen that never once flashes a notification. That device is t

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I Built My Own Ambilight for Under ₹1k, on the Same ESP32 That Runs My AI Desk Pet

Modeling Ampacity as a Lookup Table: A Hardware Engineer's Guide to NEC Table 310.16

Tips for Building and Debugging a Secure Ubuntu Homelab with Tailscale & Docker

I Built a Paving Planner Because Herringbone Patterns Made Me Lose My Mind

Build a Buzzing Hazard-Alert Wearable With an ESP32 and Gas Sensor

Portable Commodore 64: A Raspberry Pi Retro Handheld

ESP32 Bowling Scoring System Beats a $120K Proprietary Quote

Raspberry Pi Zero 2 W E Ink Typewriter: A Focused WriterDeck

Pi Zero Cyberdeck: A Pocket Linux Rig With a 3.5" Screen

The PocketMage: An Open-Source ESP32-S3 E Ink PDA Goes Live