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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.

Automation

Rate Monotonic Scheduling: Liu & Layland's 1973 Classic

10 min readRead →
From Microcontrollers to Smart Thermostats: The Tech Inside
Embedded Systems

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 →
What Is a Microcontroller? How to Pick One (2026)
Embedded Systems

What Is a Microcontroller? How to Pick One (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.

Apr 29, 2026 · ✓ Updated Apr 29, 20269 min readRead →
Embedded Systems

QNX OS: BlackBerry's Microkernel in 275M+ Vehicles

10 min readRead →
FFT: 2026 Specs, Costs, and Tradeoffs
DSP & Signal Processing

FFT: 2026 Specs, Costs, and Tradeoffs

FFT in 2026 gets clear fast. See why O(N log N) replaced O(N squared), with the 2048 point run that finished in 0.02 minutes.

11 min readRead →
Digital Filter Design: Balancing Performance and Constraints
DSP & Signal Processing

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

Apr 7, 2026 · ✓ Updated Apr 7, 20269 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.

Mar 31, 2026 · ✓ Updated Mar 31, 20268 min readRead →
How AI Chips Evolved from Basic DSP Processors 2026
DSP & Signal Processing

How AI Chips Evolved from Basic DSP Processors 2026

How AI Chips Evolved From Basic DSP Processors in 2026, with 2026 source-backed architecture shifts, measured throughput, power tradeoffs, and price

Mar 28, 2026 · ✓ Updated Mar 28, 202612 min readRead →
Embedded Systems

Zephyr Project: The Linux Foundation's Vendor-Neutral RTOS

10 min readRead →
DSP & Signal Processing

Digital Signal Processing in 2026

Learn how digital signal processing works in broad terms, with 2026 context and bench-level examples from camera, audio, and sensor pipelines.

14 min readRead →
How DSP Powers Every Smart Home Device You Own
DSP & 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.

Mar 26, 2026 · ✓ Updated Mar 26, 20268 min readRead →
RTOS

Priority Inversion: The Bug That Froze Mars Pathfinder

10 min readRead →
Embedded Systems

RTOS vs Linux: When to Use Each (with Benchmarks)

10 min readRead →
AI & Computing

Digital Signal Processor: 2026 Specs and Tradeoffs

Digital signal processor breakdown for 2026: single-cycle MAC throughput, one per clock tick, with cost data and setup tradeoffs from field tests.

9 min readRead →
Best RTOS 2026: Certification and OTA Architecture
Embedded Systems

Best RTOS 2026: Certification and OTA Architecture

The best RTOS 2026 selection hinges on certification evidence and OTA architecture for 10-15 year DSP success in security cameras and solar inverters.

6 min readRead →
Embedded Systems

What is an RTOS? Real-Time Operating Systems Explained

10 min readRead →
DSP & Signal Processing

FIR Filter: 2026 Specs and Tradeoffs

Understand FIR filter operation in 2026. We detail tap counts, coefficient loading, and the 256-value touch per sample, contrasting with IIR. Field

14 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.

Mar 23, 2026 · ✓ Updated Mar 23, 20266 min readRead →
Embedded Systems

FreeRTOS Guide: Kernel + Architecture (2026)

10 min readRead →
Embedded Systems

STM32 vs ESP32 vs RP2040: 2026 Decision Tree

STM32 vs ESP32 vs RP2040: 2026 Decision Tree. Find out which one fits your specific use case.

May 23, 2026 · ✓ Updated May 23, 20268 min readRead →
Nyquist Theorem: 2026 Specs, Limits, and Aliasing
DSP & Signal Processing

Nyquist Theorem: 2026 Specs, Limits, and Aliasing

Nyquist theorem in 2026, with the 1949 source, aliasing limits, and what the math actually guarantees when you sample an analog signal.

10 min readRead →
DSP & Signal Processing

IIR Filter: 2026 Specs, Stability, and Tradeoffs

IIR filter behavior in 2026 starts with feedback. See why fewer coefficients can get steeper rolloff, and how 1 bad pole placement can destabilize it.

8 min readRead →
Audio DSP in 2026, CPU Limits and Timing Tradeoffs
DSP & Signal Processing

Audio DSP in 2026, CPU Limits and Timing Tradeoffs

Audio DSP in 2026 explains why 1 sample deadline math favors MAC-heavy cores over CPUs, with timing, power, and scheduler tradeoffs that change design

9 min readRead →