OpenGalvoCal

OpenGalvoCal: Next-Generation F-Theta Lens & Galvo Distortion Calibration System Complete Problem Analysis, Mathematical Foundations, and Modern Software Architecture Specification 1. Executive Summary & Project Vision 1.1 The Mission Galvanometer-based ("galvo") laser systems (Fiber, CO2, UV, and MOPA) are the backbone of modern industrial marking, precision micro-machining, and artisan…

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Italian Game for Beginners: What If Black Plays ...d5?

By ChessStep editorial team You have developed your knight and bishop. Castling is next on the plan. Then Black pushes a pawn to d5.

White's bishop on c4 is attacked by Black's knight on f6.
Correct response is to capture Black's pawn on d5 with exd5.
After exd5, Black can capture the pawn with Nxd5.

2h ago ·dev.to

Ask the Circuit and Exact Dicke State Preparation at DuQuantum

This is a submission for the MLH x DEV Writing Challenge What I Built At DuQuantum, Duke’s quantum computing hackathon, my team had 24 hours to solve a deceptively simple problem.

Team at DuQuantum created efficient circuit for exact Dicke state preparation
Dicke state evenly distributes 3 excitations across 20 bitstrings for 6-qubit system
Circuit created using CZ and single qubit gates, evaluated with hardware calibration data

2h ago ·dev.to

I wrote an SRT-to-WebVTT converter in ~35 lines because players lie about subtitle support

i'm building RKMovies , a 0.91 MB Android media client. the streams come with subtitle files, and the internet almost always hands you SRT.

Converted SRT to WebVTT in 35 lines of code
Addressed timestamp and cue indexing differences
Handles BOM, line endings, and text cleaning

2h ago ·dev.to

Scotch Game for Beginners: Recapture With the Knight

By ChessStep editorial team If Black takes your d-pawn in the Scotch Game, your knight can take it back. Your queen can also reach that square, but 4. Qxd4?

White moves d-pawn to d4, challenging Black s e5 pawn
Black captures d-pawn with e-pawn, moving e-pawn to d4
Knight recapture recommended over queen recapture

2h ago ·dev.to

I wanted my notes to be plain files, so I built a small Windows notes app (no Electron)

Most note apps keep your notes in their own database, or in the cloud behind an account, or they ship a whole web browser inside.

Writer created Leaflet, a lightweight Windows notes app
Leaflet stores notes as plain Markdown files in a folder
App offers real-time formatting, PDF export, and Git integration

2h ago ·dev.to

Collect leads in a Google Sheet with a free Apps Script webhook (no Zapier)

Zapier and Make are fine tools, but paying a monthly fee to move a form submission into a spreadsheet stings when you have ten leads a month.

Use Google Apps Script to create free HTTPS endpoint for lead submissions
Script checks SECRET token, validates email before appending row to Google Sheet
Deploy script as web app, configure form to post data to endpoint URL

2h ago ·dev.to