Building a UWB Distance Monitoring and Alert System with Arduino
Measuring the distance between two points wirelessly can be useful in proximity detection, object monitoring, and embedded automation projects. Whil…
DevOps
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Setting Up ElevenLabs API: From Zero to Production
Why ElevenLabs is a Game‑Changer for Voice AI If you’ve been dabbling in text‑to‑speech (TTS) or voice cloning, you know the pain points: low‑qualit…
Export App Store and Google Play reviews to Excel and find the top complaints
Disclosure: I built the reviews scraper used in this post and earn money when people run it. The pandas part works with reviews from any source. App…
Evaluate RAG retrieval before changing your chatbot prompt
Before tuning a prompt, check if the retriever actually surfaced the evidence. A fluent answer often hides a missing document. And a retrieved docum…
Create an AI Dubbing Tool for Video Content
Why Build Your Own AI Dubbing Tool? If you’ve ever needed to localize a video, add a narration track, or simply replace a shaky on‑camera voice, doi…
Engineering practice: git, code, tests · 1. Git as a thinking tool
Engineering practice: git, code, tests · Chapter 1 of 12 · Craft · new chapter every Sunday night By the end of this chapter: Write commits that exp…
A Practical Guide to SQL Joins, Subqueries, CTEs, and Window Functions.
A hospital database rarely stores every useful detail in one table. Patient details may be stored separately from visit records. Doctor, department,…
PhotoCraft Review: I Tested the Free, Open-Source Photoshop Alternative With 4 Real Edits
Photoshop costs $22.99 a month . PhotoCraft costs $0 , it's open source, and in under three weeks it passed 66,000 stars on GitHub . So I put it to…
Save JSON from a cron job or GitHub Action
Save a JSON result from a scheduled job to a stable URL, then read it from a static page or another script. This guide uses jstash JSON Bins for a s…
Cronbach's Alpha Explained: Formula, Worked Example, Python/R Code, and a Free Calculator
You built a survey with several questions that are supposed to measure the same thing (say, "job satisfaction" or "stats anxiety"). Before you avera…
A fast website with a blog, search and a contact form, hosted free
Originally published on the BootForm blog . I work on BootForm, the form backend used in step 4; the templates are free and MIT licensed. In short:…
A One-Page SOP for a Shared Free AI Bench
A shared free AI bench rarely dies from an empty allowance. It dies from an unowned next step. The developer conversation this week mixed two moods.…
Fixing Invalid JSON in Tag Schema: Practical Guide and Syntax Rules
The "invalid JSON in tag schema" error occurs when the code inside a {% schema %} tag violates strict JSON syntax rules, most commonly because of tr…
Invalid JSON Format Examples: Rules, Common Errors, and Syntax Fixes
An invalid JSON format is any text payload that breaches standard JSON structural rules, such as using single quotes, omitting double quotes on keys…
48-Hour Field Notes: The Batch Worker Vanished and My Re-Run Redid Every Item
Two days ago I started a batch of prompt evaluations, closed the laptop lid, and assumed the free server would keep chewing through the queue while…
What is an AI agent harness?
By Harshith Vaddiparthy. Originally published in my AI agent harness guide . An AI agent harness is the software around a model that lets it do work…
How Streaming TTS Works Under the Hood
What “Streaming” Means for TTS When you ask a voice assistant to read a paragraph, you expect the audio to start playing almost instantly, not after…
HANDS-ON NETWORKING LAB: Configuring 20 PCs, 1 DHCP Server, and 2 Switches
As part of my practical networking journey, I worked on a small office network infrastructure consisting of 20 client PCs, 1 DHCP server, and 2 swit…
Working with S3 Object Tags in Buckets: SET, MERGE and CLEAR
A practical walkthrough for keeping Amazon S3 objects organized without changing what is inside the files. Object tags are easy to overlook when you…
The blockchain bootcamp · 1. The vocabulary
The blockchain bootcamp · Chapter 1 of 18 · Blockchain · new chapter every Saturday evening By the end of this chapter: Define block, chain, hash, n…
JSON vs ConfigFile vs Resource in Godot 4 — which save format and when
Godot 4 gives you three sanctioned ways to write a save file, and the docs describe each one without ever telling you which to pick. So you pick the…
How to run a local AI model that actually works on old hardware
How to run a local AI model that actually works on old hardware I have been running language models locally on a 2012 laptop with 4 cores, 8 GB of R…
The forward-deployed engineer bootcamp · 1. What a forward-deployed engineer is, and why the role exists now
The forward-deployed engineer bootcamp · Chapter 1 of 12 · Career · new chapter every Saturday morning By the end of this chapter: Describe the role…
JFIF to JPG, WebP to GIF, HEIC to PNG Explained
JFIF to JPG, WebP to GIF, HEIC to PNG: Three Conversions That Confuse Everyone You hit Save, and instead of photo.jpg you get photo.jfif. The upload…
Getting Started with OCPP 1.6 Using a Simulated Charger
If you have ever plugged in an electric car at a public charger, two computers had a conversation you never saw: the charger (the charge point ) and…
Build a Real-Time Voice Translation App
Getting Started with a Real‑Time Voice Translation App Building a real‑time voice translation app feels like science‑fiction, but with today’s cloud…
How to Install ArcLM, Tokenize Text, and Run a Tiny Language Model
How to Install ArcLM, Tokenize Text, and Run a Tiny Language Model Want to experiment with language models in Python without starting by downloading…
Tab Manager & Session Saver for Firefox: Complete Guide to Named Sessions, Workflows, and Organization
Tab management is one of the most common pain points for browser users. The average knowledge worker has 20+ tabs open at any time; developers and r…
Vim Keybindings in Firefox: Tridactyl Setup, Configuration, and Workflow
Vimperator, Pentadactyl, and Tridactyl are extensions that bring Vim-style keyboard navigation to Firefox. If you spend most of your time in a termi…
I Tracked a Scammer For 72 Hours. It Got Personal.
It started with a text message at 11:47 PM. Your USPS package could not be delivered. Please confirm address within 12 hours: usps-resolve-helpdesk[…