SakuraPi Pocket Namiji is a compact LoRa/Meshtastic node platform designed for mesh networking enthusiasts. With its ultra-small form factor, flexible power options, and open-source development support, it's ideal for solar-powered remote nodes, indoor fixed deployments, and various IoT applications.
- Compact Design: Fits directly into a 50mm PVC pipe
- Powerful Processor: ESP32-C3 with WiFi and BLE support
- Meshtastic Compatible: Pre-flashed with compatible firmware
- Open Source: Full source code available for custom development
- Temperature Monitoring: Built-in AHT20 temperature sensor for environmental monitoring
- Heatsink Compatible: Designed to accommodate heatsinks for extreme environments
- Flexible Power Input: 3-16V wide-range Buck-Boost converter
- Supports PD 12V charging adapters
- DC direct power supply
- Optional KF301 screw terminal connector
- Reverse polarity protection
- RF Design: SMA connector socket and IPEX1 interface for LoRa module
- Main SoC: ESP32-C3
- Wireless: WiFi 802.11b/g/n, BLE 5.0
- Development: Open-source firmware with custom compilation support
- Architecture: Buck-Boost converter
- Output: 5V stable supply
- Input Range: 3-16V DC
- Protection: Reverse polarity protection
- Supported Input Methods:
- PD 12V power adapter
- Standard DC power supply
- KF301 screw terminals (optional)
- RF Connector: Soldered SMA socket (fixed)
- Module Interface: IPEX1 connector for LoRa module
- Antenna Recommendation: Gizont fixed-frequency antenna (24cm or 40cm)
- Fiberglass antennas recommended for better performance
⚠️ Important: Always connect antenna before powering on to avoid RF damage
- Ultra-compact form factor
- Fits in 50mm PVC pipe
- Heatsink mounting compatible
- Temperature: AHT20 digital sensor
- Useful for monitoring PCB temperature
- Critical for sealed enclosures (solar nodes) to detect seal failure
To build a solar-powered node, users can prepare:
- Battery with protection board (supports 1-4 series cells)
- Solar panel
- MPPT controller module
The Buck-Boost architecture ensures stable operation across varying input voltages.
- Connect a LoRa antenna to the SMA connector
- Power the device using one of the supported power inputs (PD adapter, DC supply, or KF301 terminal)
- The device comes with Meshtastic firmware pre-flashed
For detailed guides and setup instructions, visit the official documentation:
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Open Source Firmware:
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Pre-compiled Binaries:
SakuraPi Pocket Namiji supports second-level development, making it suitable for building various LoRa Mesh applications. Users can customize firmware based on open-source code and compile their own versions.
For custom development, refer to:
Sakura Pi and Sakura Pi OpenSource are two distinct logos representing different aspects of the project:
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Sakura Pi Logo (🌸): Represents the official Sakura Pi organization and products with full intellectual property rights retained by the creators. Used for official products and projects with commercial viability.
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Sakura Pi OpenSource Logo: Represents open-source hardware and software projects that are freely shared under open-source licenses (such as CC BY-NC-ND or similar). Indicates that the design and source code are publicly available for learning, modification, and non-commercial use.
This project uses the Sakura Pi OpenSource branding, indicating it is an open-source hardware project shared under the CC BY-NC-ND 4.0 license.
Important Note: The Sakura Pi Pocket Namiji OpenSource version and the official Sakura Pi commercial version share identical hardware design and functionality. The only differences lie in:
- Logo: OpenSource version uses the Sakura Pi OpenSource logo
- Licensing: OpenSource version is licensed under CC BY-NC-ND 4.0 for non-commercial use
- Distribution: OpenSource version is freely shared; commercial version is sold through official channels
The circuit design, PCB layout, component selection, and all technical specifications are the same between both versions. Users building from this open-source design will obtain the same hardware capabilities and performance as the official commercial product.
We welcome contributions! Please feel free to:
- Report bugs and issues
- Suggest improvements
- Contribute firmware enhancements
- Share application examples
This project is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License (CC BY-NC-ND 4.0).
Key Points:
- ✅ Personal and educational use permitted
- ✅ Share and redistribute with attribution
- ❌ Commercial use not permitted
- ❌ Modifications and derivatives not permitted without explicit permission
See LICENSE file for full details.
This is an open-source hardware project with all intellectual property rights retained by the creator. The project is shared for learning, communication, and research purposes only. It is not intended for commercial sales or profit-generating activities.
Users are responsible for verifying circuit feasibility when building or modifying the project. The creators and Sakura Pi organization are not liable for any direct or indirect damages resulting from circuit design issues.
- Official Docs: https://docs.sakurapi.org
- GitHub Issues: Report bugs and feature requests
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