The USBNinja cable architecture is distinct from the O.MG cable. Where O.MG uses WiFi + ESP32, the Ninja Cable uses Bluetooth LE + ATtiny85 with V-USB and adds a Hall effect sensor for magnetic ring triggering. The firmware is fully open-source and well-documented. Here's how to build a functional clone, from easiest to most authentic. This is a guide on how to build your own USBNinja cable.

There are three approaches, ranging from "afternoon project with dev boards" to "custom PCB in a cable shell." I'll walk through all of them so you can pick the right one for your needs. This is a guide on how to build your own O.MG Cable.

Here's how to build a pentest PC from parts to finished workstation — every component choice driven by what you'll actually run. This is a guide on how to build a PC for hacking.