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.
Dave is the founder of TheFatBook.com, a Kelly Blue Book-style cost index for home renovation. Bid fairness checker, true cost calculator, and per-city pricing across 25 metros built from BLS wages and Craftsman labor hours.
And PermitCalculator.com, a verified building permit fee database for 29 US cities sourced from published municipal fee schedules.
All guides reviewed by David Olson.
What is a Microcontroller: Architecture, Specs, and How to Pick One in 2026
What is a microcontroller? A chip with CPU, flash, SRAM, and peripherals in one package. Covers Cortex-M tiers, real boards, interfaces, and how to choose.
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.
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.
Image & Video Generation Workflows + Prompts 2026: Stats
Image & Video Generation Workflows 2026 — Free reference card from EG3. Tables, code blocks, copy-paste templates.
Modern Prompt Engineering Reference & Formulas 2026
Prompt Engineering Formulas 2026 — Free reference card from EG3. Tables, code blocks, copy-paste templates.
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.
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
LLM API Integration Best Practices 2026 Guide
LLM API Integration Reference 2026 — 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.
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.
System Prompt Templates That Actually Work 2026
System Prompt Templates 2026 — Free reference card from EG3. Tables, code blocks, copy-paste templates.
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.
AI Coding Cheatsheet 2026: Local Edge AI Costs
AI Coding Cheatsheet 2026 — Free reference card from EG3. Tables, code blocks, copy-paste templates.
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
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.
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.
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.
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.
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.
AI Agent Architecture Reference: True Costs
AI Agent Architecture Reference — 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.