This document describes a radiation detector project using an Arduino Uno. The project detects radiations and frequencies in the surrounding environment. The key components are an Arduino Uno, radiation sensor, jumper wires, buzzer, LED, breadboard, and 220 ohm resistor. The radiation sensor detects radioactive radiation and other signals. When radiation is detected, the buzzer will sound and LED will light up. The Arduino Uno controls the components and functions. The purpose is to check for radiation from devices, towers, and other sources in the environment.