S0 IoT Gateway

The S0 IoT Gateway is a Zephyr-based IoT gateway combining the S0 Board with the Baseboard. Built around the ESP32-C6 RISC-V microcontroller running Zephyr RTOS, S0 delivers multi-protocol wireless connectivity for smart metering, industrial IoT, and edge computing applications.

S0 = S0 Board + Baseboard — Zephyr RTOS

Looking for a Linux-based gateway? See the S1 Gateway, which combines the S0 Board with BeagleV-Fire.

Overview

S0 collects data from multiple wireless protocols and transmits it securely to the cloud. It integrates with Magistrala, a modern, scalable, open-source IoT platform.

Key Problem Statement

IoT deployments face several critical challenges:

• Fragmented infrastructure requiring multiple gateways for different protocols
• High power consumption unsuitable for battery-powered installations
• Closed proprietary platforms limiting flexibility
• Lack of secure, flexible edge compute capabilities
• Complex cloud integration increasing operational costs

S0 addresses these challenges with a unified, open-source platform.

Hardware Specifications

Core Components

• Microcontroller: ESP32-C6 with RISC-V core
• Wireless M-Bus: RC-S2LP module (868 MHz)
• Cellular: SIM7080G module (NB-IoT / LTE-M)
• WiFi & BLE: Integrated in ESP32-C6
• Operating System: Zephyr RTOS

Connectivity Options

• Receive Data: WiFi, BLE, M-Bus, wM-Bus, I2C, SPI, UART
• Transmit Data: NB-IoT, LTE-M, WiFi, Ethernet (via Base Board), 4G/5G

Power Management

• Multiple power input options
• Battery backup support
• Ultra-low power operation for remote deployments
• Optimized for LPWAN and cellular IoT use cases

Software Stack

Zephyr RTOS

S0 runs on Zephyr RTOS, providing:

• Secure and modular firmware stack
• Built-in protocol support (MQTT, CoAP, WebSockets, HTTP)
• Open-source foundation for transparency and maintainability
• Community-driven innovation

Magistrala Integration

Native integration with Magistrala IoT platform:

• Seamless data ingestion and device management
• Secure cloud connectivity
• Open-source and patent-free
• Scalable architecture

Expansion Options

Base Board

The S0 Base Board adds:

• W5500 Ethernet controller
• TSS721A M-Bus transceiver
• SD card slot for data logging
• 24V DC power input
• Battery backup with charging circuit
• DIN-rail mounting

Learn more about Base Board

Use Cases

Smart Metering

Deploy S0 for residential and industrial utility monitoring:

• Read wireless and wired M-Bus meters
• Backhaul via NB-IoT or LTE-M
• DIN-rail mount in electrical cabinets
• Battery backup for power outages

Industrial Predictive Maintenance

Monitor industrial machinery for anomaly detection:

• Collect high-frequency sensor data
• Real-time edge processing with Wasm
• Local anomaly detection
• Reduced network usage

Edge AI Inference

Run AI inference at the edge:

• TinyML workloads via Wasm
• Privacy-preserving processing
• Low-latency decisions
• Independent of cloud connectivity

Agricultural IoT

Monitor remote farms and fields:

• Soil moisture and weather monitoring
• GNSS geo-tagging
• Offline SD card logging
• NB-IoT backhaul