# Geiger Counter Radiation Detector

A portable radiation detector with Geiger-Müller tube. The 150x80x40mm device measures ionizing radiation in µSv/h and CPM. Audio click per detection, LCD shows current level and cumulative dose. Data logging to SD card. Essential for rock collectors, safety personnel, and preppers. This geiger counter diy project is perfect for makers, DIY enthusiasts, and electronics hobbyists. Search volume: 2400/month.

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AI-generated from prompt:"A portable radiation detector with Geiger-Müller tube. The 150x80x40mm device measures ionizing radiation in µSv/h and CPM. Audio click per detection, LCD shows current level and cumulative dose. Data logging to SD card. Essential for rock collectors, safety personnel, and preppers."

All parts, CAD, wiring, and firmware generated by Modo AI Hardware Builder with human direction.

—Validated fit

—Electrical OK

—Assembly ready

## Parts

|  | Part | Why | MPN | Qty |
| --- | --- | --- | --- | --- |
|  | ESP32-S3 Microcontroller<br>Espressif Systems | Main microcontroller to process radiation data, control LCD display, generate audio feedback, and manage SD card logging | `ESP32-S3` | 1 |
|  | Geiger-Mueller Tube Module<br>DFRobot | Primary radiation sensor - Geiger-Mueller tube for detecting ionizing radiation and providing CPM measurements | `SEN0236` | 1 |
|  | Character LCD Display<br>Newhaven Display Intl | LCD display to show current radiation levels in µSv/h and CPM, plus cumulative dose as required | `NHD-0420H1Z-FSW-GBW-33V3` | 1 |
|  | SD Card Socket<br>Adafruit Industries LLC | SD card socket for data logging functionality to store radiation measurements over time | `1643` | 1 |
|  | Piezo Buzzer<br>Mallory Sonalert Products Inc. | Audio feedback component to provide click sounds corresponding to radiation detection events | `PB-1226PEAQ` | 1 |
|  | 3.3V Linear Regulator<br>Shenzhen Slkormicro Semicon Co., Ltd. | Voltage regulation to provide stable 3.3V power for microcontroller and display from battery source | `AMS1117-3.3   SOT-89` | 1 |
|  | Battery Holder<br>MPD (Memory Protection Devices) | Battery power source for portable handheld operation as specified in requirements | `BK-18650-PC4` | 1 |
|  | Power Switch<br>C&K | On/off switch for battery power control in handheld device | `OS102011MS2QN1` | 1 |

8 unique parts, 8 total components