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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I Built a Voice Interface for OpenClaw to Eliminate Context Switching (ClawVoice)
DEV Community • 2026-04-18 16:07

I Built a Voice Interface for OpenClaw to Eliminate Context Switching (ClawVoice)

This is a submission for the OpenClaw Challenge. What I Built I’ve been using OpenClaw through text commands. It works well — but something always felt off. Every interaction required: Opening a tab Typing commands Waiting for responses Switching context again Over time, this started breaking my flow. So I built ClawVoice. ClawVoice is a voice interface built around OpenClaw th...

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Hacker News: Front Page • 2026-04-18 16:05

Opus 4.7 to 4.6 Inflation is ~45%

Article URL: https://tokens.billchambers.me/leaderboard Comments URL: https://news.ycombinator.com/item?id=47816960 Points: 24 # Comments: 12

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DEV Community • 2026-04-18 16:05

Traditional Quantization vs 1.58-Bit Ternary Models: A Practical Comparison

If you've been running local LLMs, you already know the drill: download a 70B model, quantize it to 4-bit with GPTQ or GGUF, cross your fingers, and hope your GPU doesn't catch fire. It works. It's practical. But there's a fundamentally different approach gaining serious traction — ternary quantization at 1.58 bits per weight. The concept behind projects like Ternary Bonsai and Microsoft's BitNet...

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

Amazon won't release Fire Sticks that support sideloading anymore

Article URL: https://arstechnica.com/gadgets/2026/04/amazon-wont-release-fire-sticks-that-support-sideloading-anymore/ Comments URL: https://news.ycombinator.com/item?id=47816954 Points: 16 # Comments: 8

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The HackerNoon Newsletter: The Proof of Usefulness Algorithm: Is It Good? Do People Use It? (4/18/2026)
HackerNoon • 2026-04-18 16:03

The HackerNoon Newsletter: The Proof of Usefulness Algorithm: Is It Good? Do People Use It? (4/18/2026)

How are you, hacker? 🪐 What’s happening in tech today, April 18, 2026? The HackerNoon Newsletter brings the HackerNoon homepage straight to your inbox. On this day, Osborne Computer introduced in 1983, and we present you with these top quality stories. ...

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Why Your Soldering Iron Is the Problem, Not Your Skills
DEV Community • 2026-04-18 16:02

Why Your Soldering Iron Is the Problem, Not Your Skills

Why Your Soldering Iron Is the Problem, Not Your Skills You have watched the tutorials. You have practiced on scrap boards. Your solder joints look reasonable under magnification. But every time you power on your project, something behaves erratically. The microcontroller resets. The sensor readings drift. The LED flickers in a pattern that has nothing to do with your code. You assume ...

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Day 60: Decoupling State and CloudWatch FinOps
DEV Community • 2026-04-18 16:00

Day 60: Decoupling State and CloudWatch FinOps

Today, on Day 60 of my 100 Days of Cloud challenge, I had to pause building new features to clean up some critical technical debt in my Serverless AI Financial Agent. When you are preparing an application to scale and handle real users, the little things you hardcoded during the sandbox phase will inevitably come back to haunt you. I faced two specific operational leaks today: one affecting my app...

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HackerNoon • 2026-04-18 15:59

What Ghost Murmur Technology Actually Is (It's Not a Heartbeat Detector)

The CIA claims a classified tool called "Ghost Murmur" — built by Lockheed Martin's Skunk Works — used quantum magnetometry + AI to detect a downed pilot's heartbeat from 40 miles away in Iran. The rescue was real. The physics story? Multiple physicists say it violates the inverse cube law so severely it'd require detecting a signal 2 quintillion times weaker than what current lab sensors can bare...

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Product Hunt — The best new products, every day • 2026-04-18 15:59

Katzilla

Easy goverment data access for citizens, optimized for AI Discussion | Link

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DEV Community • 2026-04-18 15:56

The Attention Economy Inside Your Agent

Every AI agent has a finite attention budget. Not the token context window — that's the container. I'm talking about something more fundamental: the way agents decide what's worth their own processing time. Most people building agents treat attention as unlimited. They design pipelines, chains, and workflows as if the agent will carefully evaluate every option, consider every constraint, and deli...

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Hacker News: Front Page • 2026-04-18 15:54

Amazon is discontinuing Kindle for PC on June 30th

Article URL: https://goodereader.com/blog/kindle/amazon-is-discontinuing-kindle-for-pc-on-june-30th Comments URL: https://news.ycombinator.com/item?id=47816878 Points: 4 # Comments: 0

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The 5 Questions to Ask Before Touching Any Component
DEV Community • 2026-04-18 15:54

The 5 Questions to Ask Before Touching Any Component

The 5 Questions to Ask Before Touching Any Component You have an idea. You already ordered the parts. You are watching YouTube tutorials and reading forum posts. You have started writing code before you have finished reading the datasheet. Photo by LED Architectural Machine project via Hackster.io — complex integrated maker project This is the maker reflex. It is also why most projec...

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Why Your LED Strip Flickers Because of WiFi Interference
DEV Community • 2026-04-18 15:52

Why Your LED Strip Flickers Because of WiFi Interference

Why Your LED Strip Flickers Because of WiFi Interference You have an ESP32 driving a WS2812B LED strip. The LEDs work fine when your phone is across the room. When your phone is near the ESP32, the LEDs flicker. When you upload new code over WiFi, the LEDs go haywire. When the ESP32 connects to your router, the LEDs stutter. This is not a power supply problem. This is not a code proble...

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Why Your Ultrasonic Sensor Lies to You
DEV Community • 2026-04-18 15:51

Why Your Ultrasonic Sensor Lies to You

Why Your Ultrasonic Sensor Lies to You You mount an HC-SR04 ultrasonic sensor. You write the code. You measure the distance to the object. The object is 50cm away. The sensor reads 48cm. You move it to 100cm. The sensor reads 97cm. Close enough, right? Then you try to use it in your interactive installation. Someone walks in front of it. The sensor reads 30cm. Someone else steps behin...

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Your LED Art Should Dance to the Music, Not Just Blink Randomly
DEV Community • 2026-04-18 15:45

Your LED Art Should Dance to the Music, Not Just Blink Randomly

Via YouTube — ESP32 project demonstrating audio-reactive LED matrix What FFT Actually Does for Your Installation FFT stands for Fast Fourier Transform. It is a mathematical operation that takes a signal in the time domain (amplitude over time) and converts it into the frequency domain (how much of each frequency is present at that moment). Your microphone captures a waveform. That wav...

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Part 2: The Data — Building the First Public Coffee Roasting Audio Dataset with Warp/Oz
DEV Community • 2026-04-18 15:45

Part 2: The Data — Building the First Public Coffee Roasting Audio Dataset with Warp/Oz

There is no widely available public audio dataset for coffee roasting first crack detection. I was not able to find one on Hugging Face, Kaggle, or in the literature. Before the model in Post 1 could train a single epoch, I had to build one from scratch: recording sessions, annotating audio in Label Studio, and designing a pipeline that avoids a common failure mode in time-series audio ML where ev...

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Why Your Interactive Art Installation Feels Dumb
DEV Community • 2026-04-18 15:44

Why Your Interactive Art Installation Feels Dumb

The Detection vs Perception Problem A motion sensor tells you: "someone is there." A perception system tells you: "this person is standing still, looking at the piece, and leaning closer." The first tells you to turn the lights on. The second tells you to deepen the color, slow the animation, and bring the nearest element toward them. Most maker installations use the first type of se...

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Your ESP32 Project Should Run for Months, Not Days
DEV Community • 2026-04-18 15:42

Your ESP32 Project Should Run for Months, Not Days

The Battery Life Gap ESP32 is not a low-power chip. It is a high-performance WiFi chip that can enter a low-power state. The distinction matters. When the ESP32 is awake, it draws 80-240mA depending on radio activity. In deep sleep, the datasheet promises 10μA. But 10μA is the number for the ESP32 chip alone, with no peripherals, no voltage regulator, no sensors, no USB-to-serial chi...

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