To set up a spy camera without spending money on professional monitoring, you can repurpose old tech or build a custom DIY system. This guide covers how to transform old smartphones into security tools, build your own hardware, and properly hide devices for effective recording. Repurposing Old Devices (Zero Cost)

The easiest way to get a "free" spy cam is to use an old smartphone you already own.

: This tiny board can be programmed to act as a Wi-Fi security camera with its own web server .

: Platforms like Viam allow you to add highly customizable detections and triggers without needing to write complex code for every scenario .

: Keep the device plugged into a charger, as continuous video streaming will drain the battery quickly . DIY Hardware Builds