DEV Community • 2026-04-18 16:42

Fully Automated Website Day 13: Thornwing Moth — First Flying Enemy and behavior: "flying" Branch

Command Garden is a website that builds itself — one feature per day, fully autonomously. No human writes the code. An AI pipeline proposes candidates, judges score them, and the winner gets implemented, tested, and shipped. View the full decision log What shipped Rootline Defense now has its first flying enemy. Thornwing Moth cruises over ground defenders at altitude 34, ignores cont...

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DEV Community • 2026-04-18 16:41

How we build AI receptionists for home service businesses - the full playbook

You dont need a complicated stack People overcomplicate this. If youre a contractor or a dev building for contractors, the whole AI receptionist stack comes down to three things. One tool handles the voice. Vapi is the simplest path — it plugs into your phone line, handles the real-time conversation, and gives you a hook at the end of every call. Free tier is enough to test. One tool handles th...

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10m read
DEV Community • 2026-04-18 16:40

I got tired of wiring the same caching stack every project, so I built LayerCache

Every Node.js service I've worked on hits the same caching wall. It always starts the same way. You add an in-memory cache. It's fast. Life is good. Then you scale to multiple instances. Now each server has its own view of the data. Stale reads start showing up in production. So you add Redis. Now all your instances share the same cache. Problem solved — until you realize every single request is...

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5m read
DEV Community • 2026-04-18 16:39

The Golden Path: Creating Proxmox Automated VM Templates with Cloud-Init

By using this method, you only need to perform a one-time setup. Afterward, you can "spawn" new VMs in seconds that come pre-configured with your desired IP, User, and Password. Phase 1: Proxmox Shell Preparation Log in to your Proxmox server via SSH or the built-in Shell. We will use the CLI because it is significantly faster and more precise for template creation. # 1. Download the Ubuntu 24...

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DEV Community • 2026-04-18 16:33

Introduction to Blockchain Development: A Friendly Dive Into Web3 with Python and Rust

Hey there, blockchain enthusiasts! If you're just stepping into the world of blockchain development, you're in for an exciting journey. Blockchain isn’t just about cryptocurrency (though that's where it started). The potential stretches far beyond, transforming industries from finance to gaming, and beyond into what we now call Web3. In this article, I'll walk you through how you can use Python a...

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Hacker News: Front Page • 2026-04-18 16:31

The USDA's gardening zones have shifted. (Interactive app and map)

Article URL: https://apps.npr.org/plant-hardiness-garden-map/ Comments URL: https://news.ycombinator.com/item?id=47817179 Points: 12 # Comments: 1

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BRD Template Checklist: What Actually Makes It Usable
DEV Community • 2026-04-18 16:30

BRD Template Checklist: What Actually Makes It Usable

Full guide + resources. Most business requirements documents fail in a predictable way. They are either: too vague to build from too detailed to understand or disconnected from real outcomes This guide skips theory and focuses on execution: what to include how to structure it how to check if it is usable The only rule that matters Before getting into templates, one rule: ...

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3m read
Your Pipeline Is 27.8h Behind: Catching Space Sentiment Leads with Pulsebit
DEV Community • 2026-04-18 16:27

Your Pipeline Is 27.8h Behind: Catching Space Sentiment Leads with Pulsebit

Your pipeline just missed a significant discovery: a 24h momentum spike of +0.350 in sentiment surrounding a specific story about the "Karassery panchayat to reopen Take-a-Break facility." This surge points toward a notable increase in attention and sentiment, particularly influenced by the Italian press, which led by 27.8 hours without any lag relative to the Netherlands. You might be wondering h...

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Hacker News: Front Page • 2026-04-18 16:26

The electromechanical angle computer inside the B-52 bomber's star tracker

Article URL: https://www.righto.com/2026/04/B-52-star-tracker-angle-computer.html Comments URL: https://news.ycombinator.com/item?id=47817132 Points: 13 # Comments: 1

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ConfDroid Puppet Modules - java
DEV Community • 2026-04-18 16:24

ConfDroid Puppet Modules - java

Introducing confdroid_java: A Lightweight Helper for Reliable Java Installations We’re continuing the ConfDroid Puppet modules series with a small but essential addition: confdroid_java. This module does exactly one thing—and does it well. It installs and configures a specified Java version so that other Puppet modules can simply rely on it being there. No more guessing, no more manual...

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3m read
I built a pixelation method optimized for human perception
DEV Community • 2026-04-18 16:22

I built a pixelation method optimized for human perception

0. What is pixelation? Pixelation is the process of converting an image into a grid of large pixels. It’s commonly used in pixel art, games, or image compression. Original Pixelated 1. Problem: Pixelation looks worse than it should Most pixelation algorithms try to preserve as much information as possible. But at very low resolutions — like 10×10 or 15×15 or 20x20 — this...

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3m read
Why Your WS2812B LED Strip Has the Wrong Colors
DEV Community • 2026-04-18 16:20

Why Your WS2812B LED Strip Has the Wrong Colors

Why Your WS2812B LED Strip Has the Wrong Colors You write the code to display red. The strip shows orange. You write green. The strip shows cyan. You write blue. The strip shows purple. You change the color order in the library. Nothing matches. WS2812B color problems - the wrong colors usually mean voltage drop from insufficient power injection along the strip. The problem is almost...

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4m read
Why Your NRF24L01 Radio Module Never Works Reliably
DEV Community • 2026-04-18 16:19

Why Your NRF24L01 Radio Module Never Works Reliably

Why Your NRF24L01 Radio Module Never Works Reliably You connect the NRF24L01 to your Arduino. You run the getting started example. It works at your desk. You move the modules 3 meters apart. They stop communicating. You add a library that claims to fix the range. It works occasionally. You add an antenna version. It works better but still drops messages. NRF24L01 wiring - the module n...

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5m read
Why Your OLED Display Flickers (And How to Fix It)
DEV Community • 2026-04-18 16:17

Why Your OLED Display Flickers (And How to Fix It)

Why Your OLED Display Flickers (And How to Fix It) You connect an OLED display to your Arduino. The first hour, it works perfectly. Then it starts flickering. Or it works at room temperature but flickers when warm. Or it works on your desk but flickers when powered from a battery. OLED display wiring — add a 10µF capacitor directly across VCC and GND pins to stabilize VCOMH and elimin...

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6m read
Why Your Project Works on USB Power But Not on Battery
DEV Community • 2026-04-18 16:16

Why Your Project Works on USB Power But Not on Battery

Why Your Project Works on USB Power But Not on Battery You build a project. It runs perfectly from USB. You add a battery. It resets when the motor starts. Or the sensor readings go haywire. Or the LEDs flicker. You try different batteries. The problem persists. Battery-powered Arduino project — USB power is stable, battery power has internal resistance that causes voltage dips during...

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6m read
Why Your Rotary Encoder Counts Wrong (And How to Fix It)
DEV Community • 2026-04-18 16:15

Why Your Rotary Encoder Counts Wrong (And How to Fix It)

Why Your Rotary Encoder Counts Wrong (And How to Fix It) You connect a rotary encoder to your Arduino. You write the code. You rotate the shaft one click. The serial monitor shows three counts. You rotate it clockwise and the count goes down. You rotate counterclockwise and the count goes up. You add a delay. The count is still wrong. Rotary encoder wiring — A and B channels must be d...

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5m read
Why Your I2C Scanner Finds Nothing (And How to Fix It)
DEV Community • 2026-04-18 16:12

Why Your I2C Scanner Finds Nothing (And How to Fix It)

Why Your I2C Scanner Finds Nothing (And How to Fix It) You connect your I2C sensor. You upload the I2C scanner sketch. You open the serial monitor. It says "No I2C devices found." You check the wiring. You check the address in the datasheet. You try a different sensor. You try a different Arduino. Nothing works. I2C bus on breadboard — the pull-up resistors (4.7kΩ or 10kΩ) are essenti...

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6m read
DEV Community • 2026-04-18 16:11

Train Your Team on AI Automation for Health Code Compliance

The "Too Busy to Be Safe" Dilemma The lunch rush hits, and the logs are forgotten. A new hire needs training, but turnover is high. You’re juggling a thousand tasks, and manual compliance checks feel like the first thing to drop. This is the daily reality that puts your business at risk. The Core Principle: Compliance as a Byproduct, Not a Task The most effective training sh...

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2m read
Why Your Stepper Motor Skips Steps at High Speed
DEV Community • 2026-04-18 16:08

Why Your Stepper Motor Skips Steps at High Speed

Why Your Stepper Motor Skips Steps at High Speed You design a CNC router. You calculate the steps per millimeter. You write the G-code. The motor should move 200mm per minute. At low speeds, it works perfectly. At higher feed rates, it starts skipping steps. The machine cuts crookedly. You blame the software. You tune the steps per mm. You try different drivers. The problem persists. Y...

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Lobsters • 2026-04-18 16:08

Anthropic's Claude Mythos Launch Is Built on Misinformation

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