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Tutorials, project guides and component deep-dives.

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home-automationbom

Home Automation Bill of Materials: Complete Component List with Prices

Full BOM for a 3-room smart home — every component, quantity, price range, and total cost estimate for a DIY home automation installation.

home-automationstarter-kit

Home Automation Starter Kit Guide

Exactly what to buy to start building smart home controls — components, total cost, first build steps, and firmware choices.

22 May 2026

1 min read5

pirmotion-sensor

PIR Motion Sensors Guide

How PIR sensors work, HC-SR501 vs HC-SR505 vs AM312, wiring, sensitivity adjustment, and false trigger causes and fixes.

NodeMCU vs ESP32 for Home Automation

For home automation specifically — relay count, Bluetooth presence detection, ESPHome/Tasmota support, and which board to buy for each scenario.

home-automationsmart-home

Smart Home Automation Components Guide

The full component stack for a DIY smart home: microcontrollers, relays, sensors, power supplies, firmware options — with real part numbers and prices.

relayrelay-module

How to Choose the Right Relay Module

Channel count, coil voltage, active HIGH vs LOW, optocoupler isolation, SSR vs mechanical — everything you need to pick the right relay module for your project.