FREE FIELD MANUAL
The Home Sensor Handbook
The definitive 18-page field manual for basic electronics, sensor protocols, safe wiring, and practical smart home security decisions.
Local-first smart home / Security architecture
Smart home security without the cloud tax.
Network architecture, local recording, cameras, locks and automations built right, not just plugged in.
01 / Explore
Security Cameras
IP cameras, RTSP streams, local recording and privacy-first monitoring.
02 / Explore
Network Hardening
VLANs, firewall rules, IoT isolation and safer home network design.
03 / Explore
Local-First Storage
NVRs, NAS storage, retention planning and no-cloud recording paths.
04 / Explore
Smart Locks & Access
Access control, lock reliability, fallback entry and local automations.
05 / Explore
Home Automation
Home Assistant, local triggers, Zigbee, Matter and resilient routines.
06 / Explore
Solar Energy
Backup power, solar readiness and keeping security systems online.
07 / Explore
Local AI
Self-hosted models, security AI, private inference and practical hardware benchmarks.
/ Secure assets & blueprints /
The Vault
Plan camera storage in your browser and download the free home sensor field manual.
Tested building blocks
Starter gear
The hardware the guides keep coming back to. See the full gear list.
Start here
Home server
A quiet, low-power box for Home Assistant, Immich and backups.
Beelink Mini S12 Pro Intel N100 · 16 GB RAM · 500 GB SSD View on Amazon 
Dell OptiPlex 7060 Micro Renewed · i5-8500T · 16 GB · 512 GB SSD View on Amazon No cloud
Local automation
Zigbee coordinator and sensors that keep working without the internet.
Sonoff Zigbee 3.0 USB Dongle Plus ZBDongle-P · Zigbee coordinator View on Amazon 
Aqara Door and Window Sensor Zigbee contact sensor · MCCGQ11LM View on Amazon Local recording
Cameras and NVR
RTSP cameras, PoE and storage that record on your own hardware.
Reolink RLC-520A 5 MP · PoE turret camera View on Amazon 
TP-Link TL-SG1005P 5 ports · 4 PoE+ ports · 65 W budget View on Amazon Outage-proof
Backup and power
Keep the network up and the data recoverable when things fail.
CyberPower CP1000PFCLCD 1000 VA / 600 W · 120 V View on Amazon 
WD Elements desktop 8 TB WDBWLG0080HBK-NESN · USB 3.0 View on Amazon As an Amazon Associate I earn from qualifying purchases.
Editorial highlights
Trending this month
Four guides gaining attention across the last 30 days, recalculated every week.
#01
Trending / 30 days
Android home server with Termux: SSH, SFTP and a local website
Turn an old Android phone into a local server with Termux: SSH on port 8022, SFTP, a small website, battery checks and background-process limits.
Read guide
#02
Trending / 30 days
Immich Hardware Requirements: Mini PC, NAS, or Old Desktop?
Choose a mini PC for Immich: official RAM requirements, a practical 16 GB setup, local SSD vs NAS storage, and separate backups.
Read guide
#03
Trending / 30 days
Local ChatGPT: model size in GB and 16–32 GB RAM builds
How many GB does local AI need? Compare 2.0 GB and 4.9 GB model downloads, RAM and VRAM needs, and what differs from using ChatGPT online.
Read guide
#04
Trending / 30 days
UniFi Camera VLAN Isolation for Local NVR Recording
Configure a UniFi camera VLAN that blocks WAN access, keeps RTSP recording local, and gives the NVR exactly the access it needs.
Read guideLatest guides
Practical local-first guides ordered by publication date, from broad architecture to stack-specific setup and troubleshooting.
/home-automation/network-hardening
LoRa vs LoRaWAN vs Meshtastic: choose a network for property sensors
Choose a radio architecture for outbuildings and property sensors. Compare LoRaWAN, Meshtastic and custom LoRa links by data path and failure modes.
/local-first-storage/local-first
Proxmox VM backups: test a restore before trusting the schedule
Restore a Proxmox VM into an isolated test environment, check application data and dependencies, and record a recovery time you can use.
/local-first/home-automation
Self-host Postiz on an OptiPlex: wake, publish, then power off
Build a Docker social scheduler on an i5 OptiPlex with 16 GB RAM: AI submissions, BIOS wake, verified publishing and guarded shutdown without a VPS.
/network-hardening/local-first
Meshtastic without internet: test two nodes before planning a mesh
Set up a two-node Meshtastic test, separate Bluetooth from LoRa, check matching settings, and record what offline messaging actually proves.
/local-first-storage/local-first
Syncthing is not a backup: build a recovery path that survives mistakes
Use Syncthing for daily file access, then add independent recovery. Learn what versioning protects and test a restore without risking your files.
/local-ai/home-automation
AI Energy Management With Home Assistant and EMHASS
Use EMHASS with solar forecasts, dynamic tariffs, EV charging constraints and deterministic Home Assistant fallbacks.
/local-ai/home-automation
Build an Offline Multimodal Voice Assistant for Home Assistant
Build a local Home Assistant voice pipeline with wake word, speech, Gemma 4 context, allowlisted actions and spoken responses.
/local-ai/local-first
Gemma 4 Audio Local Inference: What Works Offline and What Does Not
Test Gemma 4 audio locally for transcription and translation, with realistic runtime, format, memory and latency limits.
/local-ai/local-first
Local ChatGPT: model size in GB and 16–32 GB RAM builds
How many GB does local AI need? Compare 2.0 GB and 4.9 GB model downloads, RAM and VRAM needs, and what differs from using ChatGPT online.
/local-ai/local-first
Local RAG With Open WebUI: Chat With Documents Without the Cloud
Build an offline Open WebUI RAG workflow for PDFs with local embeddings, practical chunking, evidence checks and private storage.
/local-ai/local-first
Open WebUI on Windows: Build a Private ChatGPT With Ollama
Run Open WebUI and Ollama on Windows with persistent storage, LAN access controls, backups and no accidental internet exposure.
/local-ai/home-automation
Reduce Food Waste With Local OCR, Private RAG and Fridge Photos
Turn fridge photos into a private local inventory with OCR, recipe retrieval and honest date-label alerts that require confirmation.
/local-ai/home-automation
Build a Local AI Irrigation System With Soil Sensors and Weather RAG
Combine calibrated soil sensors, local climate history and guarded Home Assistant automations for private, water-aware irrigation.
/local-ai/home-automation
Build an Offline Care Assistant for Older Adults or Pets
Combine local voice, fall signals, medication reminders and family alerts without turning a home lab into a medical device.
/local-ai/local-first
Qwen3 vs Gemma 4 for Local Coding: Which Model Fits Your Hardware?
Compare Qwen3 and Gemma 4 for private C# and .NET coding by memory use, context, tooling and reproducible local tests.
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