Freelance Embedded Systems Developers in China
Freelance Embedded Systems Developers in China
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simon chen
China
IoT Architect | 15+ Yrs | Prototype to Mass Production
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IoT Architect | 15+ Yrs | Prototype to Mass Production
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Another new board works with E-ink.
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ESP32-P4 SOM: Dual-Core AIoT Hub with Advanced Multimedia Overview: The ESP32-P4 SOM is a flagship, low-power, cost-effective computing core launched in 2026. Featuring a unique ESP32-P4 + ESP32-C6 dual-chip architecture, it bridges high-performance application processing with advanced WiFi 6 and Bluetooth 5 (LE) connectivity. This "Minimum System" is engineered into a compact 40x30mm footprint, providing a ready-to-use engine for the next generation of smart multimedia devices. ► Skills Used: ● Dual-SoC System Architecture (P4 + C6) ● DFM & Yield Optimization ● EMI/EMC Engineering ● BOM Optimization ● Firmware Development(C/C++). ► "One Board, Triple Mounting Options": Designed for maximum versatility across different development phases and deployment environments: ● Flexible Integration: A single PCBA design supports three mounting configurations: Dual BTB connectors, Single BTB, or LGA (Land Grid Array). This allows developers to switch between easy-to-swap modules for prototyping and low-profile, vibration-resistant mounting for mass production. ● Rapid Development Ecosystem: By routing up to 80 GPIOs to the module interface, clients only need to design a simple 1-4 layer carrier board. This drastically shortens the R&D cycle and reduces hardware validation costs. ● Highly Integrated Design: Despite its small size, the module houses the SoC, PSRAM, Flash, PMIC, and the ESP32-C6 communication co-processor, complete with reserved shielding for superior EMI performance. ► Key Engineering & Product Features: ● Network Versatility: In addition to WiFi 6, the module provides a dedicated Ethernet extension interface, ensuring high-speed and ultra-stable wired connectivity for industrial environments. ● High-Speed Multimedia: Native support for MIPI DSI (Display) and MIPI CSI (Camera), enabling high-definition visual interfaces and real-time image processing. ● Advanced Audio & Storage: Integrated voice input and audio output interfaces for interactive systems, plus high-speed TF card support for localized data storage. ● Connectivity-Rich: Powered by the ESP32-C6 co-processor to provide stable WiFi 6 and BLE connectivity, ensuring the P4 main processor remains dedicated to heavy computational tasks. ● Massive I/O Capability: With 80 GPIOs available, the module can control complex arrays of sensors, actuators, and peripheral devices simultaneously. ► Target Applications & Solutions: ● Smart Security: Advanced Access Control Systems utilizing MIPI camera input and local processing. ● Voice AI: Smart AI Speakers with high-fidelity audio I/O and localized voice recognition capabilities. ● Industrial HMI: Low-cost Human-Machine Interfaces that require fluid graphical displays and low power consumption. This ESP32-P4 SOM represents the pinnacle of "Efficiency Meets Performance." By decoupling the high-speed processing core from the carrier board, I provide a pre-verified, mass-production-ready platform that allows you to deploy complex, multimedia-rich AIoT solutions with unmatched speed and technical confidence.
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RK3326s SOM: Modular "Minimum System" for Rapid Deployment Overview: The RK3326s SOM is a highly integrated, 6-layer System-on-Module designed to function as a complete, "plug-and-play" computing core. By utilizing a 260-pin DDR4 SO-DIMM interface, this module eliminates the need for secondary reflow soldering—a common cause of defects in LGA-based modules—while enabling rapid assembly and field-swappability for industrial and consumer applications. ► Skills Used: ● High-Speed Systems Architecture. ● PCBA design (Altium/KiCad) ● Linux Kernel/APP development(C/C++) ● DFM & Production Optimization ● EMI/EMC Engineering ● BOM Optimization ► "One Core, Infinite Carrier Boards": The modular design is engineered to slash development cycles and R&D costs for new product categories: ● Full GPIO Breakout: All essential I/Os are routed to the SO-DIMM interface, allowing clients to develop simple 1-4 layer carrier boards for specific projects. ● Elastic Material Compatibility: Pre-engineered to support 10+ WiFi modules, DDR3/LPDDR3 DRAM, and EMMC/NAND Flash variants, ensuring a resilient supply chain against component shortages. ● Streamlined Production: Avoids the "Double-Reflow" trap, significantly lowering the barrier for entry for smaller factories and reducing the scrap rate during mass production. ► Key Technical Features: ● Ultra-Fast Boot: Optimized Linux kernel achieving a 18-second cold boot time. ● Memory Efficiency: Stable and fluid operation on configurations as low as 512MB DRAM + 1GB EMMC. ● Ruggedized Layout: Built-in immunity to high-frequency interference, ideal for smart kitchen appliances and industrial environments. ● Dual-OS Support: Native compatibility with both Android and Linux, providing flexibility for diverse UI and logic requirements. ► Scalability & Proven Success (Mass Production): ● Industrial Automation (ESOP): Deployed as the central processing unit for factory-wide Electronic Standard Operating Procedure systems. ● High-End Consumer Tech (LG DUOBO): Trusted as the core compute engine for premium smart devices. ● Smart Kitchen Appliances: Successfully integrated into high-power microwave steam ovens, leveraging its radiation-resistant design. This SOM represents my commitment to "Zero-Defect Manufacturing." I provide a hardware core that is not only powerful but also audited for production reliability, allowing you to focus on your product's unique features while I handle the complexities of the underlying architecture.
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RK3566 SOM: Edge Computing & Multimedia Core Overview: The RK3566 SOM is a high-performance, 6-layer System-on-Module that integrates a Quad-core SoC, NPU, DRAM, Flash, and PMIC into a compact "Plug-and-Play" computing core. Designed with an Industrial SODIMM interface, it eliminates the risks of secondary reflow soldering inherent in LGA modules, significantly improving factory yield and enabling modular upgrades for AIoT and multimedia applications. ► Skills Used: ● Edge AI Architecture ● High-Speed PCB Design ● DFM & Yield Optimization ● Linux Kernel/APP development(C/C++) ► "High-Performance Core, Low-Cost Carrier": The architecture is engineered to provide a professional-grade computing heart while simplifying the peripheral development: ● Efficiency Redefined: All GPIO pins are routed to the SODIMM interface, allowing clients to deploy complex AI products using simple 1-4 layer carrier boards, drastically reducing R&D costs and TTM (Time-to-Market). ● Resilient Supply Chain: Pre-configured compatibility for 10+ WiFi modules, DDR4/LPDDR4 DRAM, and EMMC/NAND Flash, ensuring production continuity regardless of component shortages. ● Optimized OS Ecosystem: Supports Linux/Android with kernel-level tuning, achieving a 15-second cold boot and stable performance even on 512MB RAM configurations. ► Key Engineering & Product Features: ● AI Intelligence: Built-in 1T NPU enables edge-side AI capabilities for facial recognition, voice processing, and predictive maintenance. ● Multimedia Excellence: Supports 4K hardware decoding and direct HDMI output, ideal for high-definition visual displays. ● Acoustic Precision: Integrated hardware VAD (Voice Activity Detection) significantly enhances the response speed and accuracy of smart speakers and voice interfaces. ● Production-Ready Integrity: A fully verified "Minimum System" that shifts the complexity away from the factory floor to a pre-tested, swappable module. ► Scalability & Proven Success (Mass Production): ● Industrial Automation (MES): Serving as the high-speed data processing core for Manufacturing Execution Systems. ● Consumer Electronics: Deployed in high-definition digital photo frames and portable retro gaming consoles. ● Developer Ecosystem (GRS Viper SBC): Powering professional-grade Single Board Computers for the global maker and engineering community. This RK3566 SOM represents the pinnacle of "High-Yield Intelligence." By combining AI power with a modular, audit-friendly manufacturing structure, I help you deliver sophisticated high-end products with the technical certainty of a seasoned architect.
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Embedded Systems Developer
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Tienyu Yang
China
Full-Stack Dev: JavaScript, Rust, C#, React Native
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Full-Stack Dev: JavaScript, Rust, C#, React Native
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POKB
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6
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maimai-alias-querier
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5
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“transthink” - Dictionary App
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16
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