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/guides · Research Library

Every guide. Primary sources.

Written from datasheets, reference designs, FCC filings, and field notes from TruSentry installs. Not rewrites of press releases. Not summaries of other people’s reviews. When we say a camera sensor runs 12-bit ADC, we pulled that from the sensor TRM. When we say a mounting bracket fails in high wind, that’s from a real install. No manufacturer pays to influence our analysis.

AllSignal ProcessingEmbedded SystemsSmart HomeSecuritySolar & EnergyAI & Computing
What Are AI Reasoning Tokens and Their Hidden Costs
AI & Computing

What Are AI Reasoning Tokens and Their Hidden Costs

what are ai reasoning tokens? They are the internal chain-of-thought steps a model generates to work through a problem before producing the visible output.

Apr 3, 2026 · ✓ Updated Apr 3, 20266 min readRead →
IoT Sensor Networks: How Embedded Systems Monitor Your Whole
Embedded Systems

IoT Sensor Networks: How Embedded Systems Monitor Your Whole

IoT Sensor Networks: How Embedded Systems Monitor Your Whole House. These systems process data locally for reliable whole-house IoT monitoring.

Apr 3, 2026 · ✓ Updated Apr 3, 20266 min readRead →
How DSP Powers Every Smart Home Device You Own
Signal Processing

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.

Apr 3, 2026 · ✓ Updated Apr 3, 20269 min readRead →
Best Doorbell Camera 2026: Engineering Behind the Top Picks
Security

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.

Apr 3, 2026 · ✓ Updated Apr 3, 20267 min readRead →
FPGA vs Microcontroller: Which Runs Your Smart Home Hub
Embedded Systems

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.

Apr 3, 2026 · ✓ Updated Apr 3, 202610 min readRead →
DeepSeek vs OpenAI Pricing Comparison 2026
Technology

DeepSeek vs OpenAI Pricing Comparison 2026

deepseek vs openai pricing comparison in 2026: 12 cost components beyond tokens including cache and search fees. Non-LLM costs exceed 50% of agent workflows.

Apr 3, 2026 · ✓ Updated Apr 3, 20265 min readRead →
The Engineering Behind Solar Inverters: How Signal Processin
Solar & Energy

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.

Apr 3, 2026 · ✓ Updated Apr 3, 20268 min readRead →
Embedded Systems Explained: What’s Actually Running Your Security Camera
Embedded Systems

Embedded Systems Explained: What’s Actually Running Your Security Camera

Embedded Systems Explained: What's Actually Running Your Security Camera. It reveals the processor, memory, and firmware that make IP cameras work reliably.

Apr 3, 2026 · ✓ Updated Apr 3, 20267 min readRead →
The Signal Processing Behind Voice Assistants: Alexa, Siri
Smart Home

The Signal Processing Behind Voice Assistants: Alexa, Siri

The Signal Processing Behind Voice Assistants: Alexa, Siri, and Google Home explores the tech behind mic arrays, wake-word models, and cloud ASR.

Apr 3, 2026 · ✓ Updated Apr 3, 20267 min readRead →
NVR Security Systems Explained: PoE Cameras, Storage, And Se
Security

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.

Apr 3, 2026 · ✓ Updated Apr 3, 20268 min readRead →
Real-Time Operating Systems: Why Your Doorbell Camera Never
Embedded Systems

Real-Time Operating Systems: Why Your Doorbell Camera Never

Real-Time Operating Systems: Why Your Doorbell Camera Never Misses a Frame. Learn why RTOS treats 33ms frame budgets as hard deadlines in doorbell cameras.

Apr 3, 2026 · ✓ Updated Apr 3, 20269 min readRead →
ESP32 Projects For Home Automation: What You Can Actually Bu
Technology

ESP32 Projects For Home Automation: What You Can Actually Bu

ESP32 Projects for Home Automation: What You Can Actually Build. Home labs switch from Raspberry Pi to low power ESP32 for sensor and actuator nodes.

Apr 3, 2026 · ✓ Updated Apr 3, 20265 min readRead →
How to Reduce AI API Costs: Save 60-80% on LLM Spend
AI & Computing

How to Reduce AI API Costs: Save 60-80% on LLM Spend

how to reduce ai api costs by tracking layered expenses in production AI agents. Non-LLM costs can account for 27-50% of total spend in 2026.

Apr 3, 2026 · ✓ Updated Apr 3, 20265 min readRead →
Best Home Security Camera 2026: What the Specs Actually Mean
Security

Best Home Security Camera 2026: What the Specs Actually Mean

Best Home Security Camera 2026: What the Specs Actually Mean. Discover how sensors, ISP, and encoders affect bandwidth and storage in real networks.

Apr 3, 2026 · ✓ Updated Apr 3, 20266 min readRead →
Why Every Solar Panel Needs a Microcontroller (And What It Does)
Embedded Systems

Why Every Solar Panel Needs a Microcontroller (And What It Does)

Why Every Solar Panel Needs a Microcontroller (And What It Does). NEC 690.12 requires microcontrollers for rapid shutdown compliance and optimal energy harvest.

Apr 3, 2026 · ✓ Updated Apr 3, 20265 min readRead →
Zigbee vs Z-Wave: The Protocols Running Your Smart Home
Smart Home

Zigbee vs Z-Wave: The Protocols Running Your Smart Home

Zigbee vs Z-Wave: The Protocols Running Your Smart Home. Discover how 2.4GHz vs sub-GHz affects range, speed, and interference in your smart home.

Apr 3, 2026 · ✓ Updated Apr 3, 20266 min readRead →
AI Model Cost Per Token 2026: 12 Hidden Cost Layers
AI & Computing

AI Model Cost Per Token 2026: 12 Hidden Cost Layers

ai model cost per token 2026 reveals the 12 hidden cost layers in LLM APIs beyond simple rates. This guide explains the real costs for AI teams in 2026.

Apr 3, 2026 · ✓ Updated Apr 3, 202610 min readRead →
AI Agent Development Cost Breakdown in 2026
AI & Computing

AI Agent Development Cost Breakdown in 2026

ai agent development cost breakdown: costs $20k-$200k+ in 2026. Initial build 25-35% of 3yr total spend; 65-75% in tokens, monitoring, maintenance & governance.

Apr 3, 2026 · ✓ Updated Apr 3, 20265 min readRead →
From Microcontrollers To Smart Thermostats: The Tech Inside
Technology

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.

Apr 3, 2026 · ✓ Updated Apr 3, 20267 min readRead →
How AI Chips Evolved From Basic DSP Processors
Signal Processing

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.

Apr 3, 2026 · ✓ Updated Apr 3, 202610 min readRead →
PoE Security Cameras: Why Power Over Ethernet Changes Everyt
Security

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.

Apr 3, 2026 · ✓ Updated Apr 3, 20268 min readRead →