Optiboot (an older version) is installed by default on the Arduino Uno and (as of 2018) official Arduino Nano boards. It can be installed on all older mega8, 168 or 328 based Arduinos. As of 2019, ...

The Ultimate ESP32 WiFi + BT + Drone Jammer w/ 5 Radios. ⚠️ LEGAL DISCLAIMER: This tool is designed for AUTHORIZED SECURITY TESTING ONLY. Unauthorized use of RF jamming, WiFi deauthentication, or ...