Engineered a custom LoRa module based on the Semtech SX1276 chipset for Indian frequency bands.

The client needed to enable LoRa connectivity across their existing device line for long-range, low-power communication, specifically for deployment in India. However, the existing solutions were either:

• Not compliant with WPC ETA (India-specific) regulations

• Lacked proper RF certification

• Didn't allow modular integration with embedded platforms and with LoRa gateways. They needed a custom, certified LoRa module that could seamlessly integrate with embedded platforms while ensuring regulatory approval and RF performance compliance.

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Our Solution

We engineered a custom LoRa module based on the Semtech SX1276 chipset tailored for Indian frequency bands (865–867 MHz). Our team handled the entire hardware and firmware design, including:

🔧 Embedded Engineering

• Selected and integrated the SX1276 transceiver
• Designed firmware for LoRa communication bare-metal C
• Implemented low-power modes, interrupt-based wake-up, and OTA-ready stack

📡 RF & Certification

• Performed RF tuning and optimization for antenna and PCB layout
• Passed WPC ETA requirements for India
• Successfully certified the device via TÜV Rheinland for both RF compliance and safety standards

🔌 System Integration

• Designed the module as a plug-and-play SoC extension
• Allowed seamless integration into existing devices to make them LoRa compliant
• Provided SDK and documentation for faster client integration

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Key Highlights

• LoRa Chipset: Semtech SX1276 (sub-GHz)
• Frequency Compliance: India ISM Band (865–867 MHz), WPC ETA approved
• Certifying Body: TÜV Rheinland, Wireless Procurement Committee , Department of Telecommunications, India
• Integration Ready: Modular form factor for easy device integration
• Low Power Design: Sleep modes and minimal MCU wake-up time for battery efficiency
• Firmware Stack: LoRa packet handler with interrupt-based scheduling for real-time performance

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Impact

• Enabled faster time-to-market for client’s LoRa-enabled devices
• Reduced certification overhead for future IoT deployments in India
• Provided a scalable, reusable hardware+firmware module
• Demonstrated our full-stack capability in embedded design, RF engineering, and compliance testing

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