Tutorials, project guides and component deep-dives.
Exactly what to buy to start building smart home controls — components, total cost, first build steps, and firmware choices.
How PIR sensors work, HC-SR501 vs HC-SR505 vs AM312, wiring, sensitivity adjustment, and false trigger causes and fixes.
For home automation specifically — relay count, Bluetooth presence detection, ESPHome/Tasmota support, and which board to buy for each scenario.
The full component stack for a DIY smart home: microcontrollers, relays, sensors, power supplies, firmware options — with real part numbers and prices.