Update README.md

Author: Vadym Vikulin

README.md

@@ -1,8 +1,61 @@
-KiCad DIY Kit for gamma-ray spectrometer using a popular NaI(Tl) scintillator, SiPM and a Raspberry Pi Pico 2.
+# OpenGammaKit
+
+**OpenGammaKit** is an open-source gamma spectrometer hardware platform, inspired by the excellent [Open-Gamma-Detector](https://github.com/OpenGammaProject/Open-Gamma-Detector). It takes the original schematic and redesigns the PCB using **KiCad** (originally designed in EasyEDA), making the project more accessible and modifiable for open hardware enthusiasts.
+
+OpenGammaKit is designed to be affordable, reliable, and easy to integrate with embedded systems, mobile devices, or PCs—ideal for DIY nuclear instrumentation, educational labs, or citizen science.
+
+---
+
+## 🔧 Features
+
+- ✅ Based on the **Open-Gamma-Detector** schematic  
+- ✅ Complete redesign in **KiCad** with improved layout and routing  
+- ✅ USB serial communication (compatible with Android 7.0+ and PCs)  
+- ✅ Compatible with [OGK Inspector](https://github.com/vikulin/OGK-Inspector) Android app and firmware  
+- ✅ Real-time gamma spectrum output and spectrometer integration  
+- ✅ Works with scintillation detectors (e.g., CsI(Tl), NaI(Tl), etc.)  
+- ✅ Open and editable source files for schematics and PCB
+
+---
+
+## 📂 Repository Contents
+
+- `/docs/` – 3D render previews of the board, Bill of Materials(BOM), KiCad schematic and PCB files  
+- `/kicad-libraries/` – KiCad libraries including a custom footprints
+
+---
+
+## 🧠 Companion Projects
+
+- **OGK Inspector (Android App)**  
+  View spectra, calculate resolution, access terminal mode  
+  👉 [OGK-Inspector on GitHub](https://github.com/vikulin/OGK-Inspector)
+
+- **OGK Firmware**  
+  USB serial interface firmware for supported microcontrollers  
+  👉 [OGK Firmware Repository](https://github.com/vikulin/OGK-Firmware)
+
+---
+
+## 📷 3D render previews of the boards
 
 <p align="center">
   <br>
   <img alt="3d View of the detector board" title="3d View of the detector board" width="500px" src="docs/pcb-3dview-v0.1.1.png">
 </p>
 
-### Inspired by https://github.com/OpenGammaProject/
+---
+
+## 📜 License
+
+This project is licensed under the **GNU General Public License v3.0**.  
+See the [LICENSE](LICENSE) file for details.
+
+---
+
+## 🙌 Acknowledgements
+
+- Based on the original design by [OpenGammaProject](https://github.com/OpenGammaProject/Open-Gamma-Detector)  
+- Thanks to the open hardware and spectroscopy communities!
+
+---