Reviews every article for factual accuracy of technical claims, correctness of spec references, and data integrity. Flags unverified assertions and checks cited sources against primary documentation. When a guide references a chipset specification, protocol behavior, or performance number, David verifies it against the manufacturer datasheet, IEEE standard, or published benchmark data.
All guides reviewed by David Olson.
How Do PoE Security Cameras Handle Power Spikes
How do PoE security cameras handle power spikes? PSE applies 2.7-10.1V to verify 19-26.5kΩ resistance per IEEE 802.3 before 44-57V. This protects PD SoC and
Managed Switch for VLANs Home Networks Tested
A managed switch for VLANs home networks isolates self-hosted services from IoT on separate domains. Routers collapse with frame drops and VLAN leakage.
Factorial Calculator: Exact N!, Digit Count, Trailing Zeros
This factorial calculator computes exact n! up to 1000 with BigInt. Get digit count and trailing zeros using Stirling and Legendre formulas for larger n.
Openrouter Quick Start & Review 2026: Costs & Tradeoffs
OpenRouter Quick Start & Review — Free reference card from EG3. Tables, code blocks, copy-paste templates.
The Engineering Behind Solar Inverters: How Signal Processin
The Engineering Behind Solar Inverters: How Signal Processing Maximizes Output. Signal processing uses MPPT to maximize solar output and ensure grid sync.
AI Coding Cheatsheet 2026: Local Edge AI Costs
AI Coding Cheatsheet 2026 — Free reference card from EG3. Tables, code blocks, copy-paste templates.
Persistent Agents and Always-On AI Systems: Hardware Risks
Persistent Agents & Always-On AI — Free reference card from EG3. Tables, code blocks, copy-paste templates.
What Does "Collate" Mean When Printing?
What does "collate" mean when printing? Collated printing outputs one full copy of a multi-page document before the next copy. Uncollated stacks all copies of
PoE Security Cameras: Why Power Over Ethernet Changes Everyt
PoE Security Cameras: Why Power Over Ethernet Changes Everything. It removes the need for separate power outlets and cuts installation complexity.
Security Camera Local Storage: No Cloud, No Subscription, No
Security Camera Local Storage: No Cloud, No Subscription, No Problem. Keep recording during internet outages with local NVR storage, no subscriptions needed.
NVR Security Systems Explained: PoE Cameras, Storage, and Se
NVR Security Systems Explained: PoE Cameras, Storage, and Setup. Explore PoE power (802.3af/at/bt), storage needs, and local setup without subscriptions.
System Prompt Templates That Actually Work 2026
System Prompt Templates 2026 — Free reference card from EG3. Tables, code blocks, copy-paste templates.
AI Agent Architecture Reference: True Costs
AI Agent Architecture Reference — Free reference card from EG3. Tables, code blocks, copy-paste templates.
Industrial IoT Applications: 2026 Trends
Discover the evolving landscape of industrial IoT applications in 2026. See how connectivity, edge AI, and smart buildings are driving efficiency and
LLM API Integration Best Practices 2026 Guide
LLM API Integration Reference 2026 — Free reference card from EG3. Tables, code blocks, copy-paste templates.
Image & Video Generation Workflows + Prompts 2026: Stats
Image & Video Generation Workflows 2026 — Free reference card from EG3. Tables, code blocks, copy-paste templates.
AI Chatbot Development Services Cost $5K-$200K
AI chatbot development services cost $5K-$200K in 2026. Basic bots run prompts on one LLM. High-end handle RAG, routing, logs, integrations across providers.
How the Inkless Printer Signal Chain Works
The inkless printer takes Bluetooth data from your phone. The MCU decompresses it and calculates PWM pulses for the thermal head to avoid banding.
Fine-Tuning vs RAG vs Agents Decision Guide 2026
RAG vs Fine-Tuning vs Agents Decision Guide — Free reference card from EG3. Tables, code blocks, copy-paste templates.
How DSP Powers Every Smart Home Device You Own
How DSP Powers Every Smart Home Device You Own. DSP in MCUs samples analog signals via ADCs and runs real-time math to issue commands to motors and switches.
Modern Prompt Engineering Reference & Formulas 2026
Prompt Engineering Formulas 2026 — Free reference card from EG3. Tables, code blocks, copy-paste templates.
From Microcontrollers to Smart Thermostats: The Tech Inside
From Microcontrollers to Smart Thermostats: The Tech Inside Your HVAC. Explore how Cortex-M4 and ESP32 enable PID control in smart HVAC systems over FPGAs.
2026 Raspberry Pi Home Automation: A Practical Setup Guide
Raspberry Pi Home Automation: A Practical Setup Guide. Pi 5 with Home Assistant OS beats Pi 4 for speed, I/O and reliability in 24/7 homes with 50+ devices.
Claude vs Grok vs GPT-5.4 Model Comparison 2026
Claude vs GPT vs Gemini vs Grok Comparison — Free reference card from EG3. Tables, code blocks, copy-paste templates.
Digital Filter Design: Balancing Performance and Constraints
Digital filter design balances stopband attenuation, phase response, load and stability against hardware constraints. The DSP signal chain maps to FIR, IIR and
Best Doorbell Camera 2026: Engineering Behind the Top Picks
Best Doorbell Camera 2026: Engineering Behind the Top Picks explores H.265 bandwidth savings and local processing in Ring, Eufy and Nest for stable 4K video.
FPGA vs Microcontroller: Which Runs Your Smart Home Hub
FPGA vs Microcontroller: Which Runs Your Smart Home Hub. Microcontrollers suit the I/O-bound protocol translation across radios in smart home hubs unlike FPGAs.
Best Coding Podcasts in 2026
Best coding podcasts rank sixth among developer resources in 2026. Docs at 67.8%, search 58.7%, Stack Overflow 51.4%, video 50%, AI codegen tools next. Shows
How AI Chips Evolved from Basic DSP Processors
How AI Chips Evolved From Basic DSP Processors from fixed MAC arrays to programmable tensor cores for neural networks in power conversion and solar inverters.
Security Cameras Without a Subscription: How Local Storage W
Security Cameras Without a Subscription: How Local Storage Works records video to local NVR or microSD cards, eliminating monthly fees and third-party access.
N8n vs Make vs Zapier and Which No Code Automation Platform
N8n vs Make vs Zapier and which no code automation platform is worth it. N8n runs $15 at 450k ops self hosted. Make costs $405. Zapier hits $999.