Our Services

Comprehensive embedded systems solutions from firmware to hardware

Production-grade Modbus-MQTT gateway solutions with hardware security & full mass-production support

100+
Industrial Projects Delivered
Mass-Produced
STM32 Gateways Deployed
8+ Years
Modbus/MQTT Expertise
IEC 61000
EMC Compliance

Key Benefits

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Production-Ready Code

Firmware tested and validated for mass production. MISRA-C compliant, 72-hour stress tested.

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Fast Delivery

Agile methodology with bi-weekly milestones. Transparent progress tracking.

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Full Documentation

Complete source code, schematics, API docs, BOM, and manufacturing test procedures.

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IP Protection

Full NDA coverage. Exclusive source code ownership transferred. Your IP stays yours.

Industries We Serve

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Factory Automation

Pain: Unreliable Modbus data, PLC integration bottlenecks

We deliver: Multi-slave Modbus gateways, EMC-compliant RS485 isolation

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Energy & Power

Pain: Harsh environment sensors, wide temperature operation

We deliver: 4-20mA monitoring, solar IoT gateways, -40ยฐC~125ยฐC devices

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Building HVAC

Pain: Fragmented sensors, no remote control

We deliver: Remote telemetry gateways, cloud HVAC controllers

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Industrial Machinery

Pain: Proprietary buses, lack of predictive maintenance

We deliver: CAN/CANopen controllers, vibration monitoring nodes

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Industrial IoT Security

Pain: Unencrypted devices, no secure OTA

We deliver: Secure OTA, X.509 certificates, AES-256 MQTT/TLS

Development Process

1

Requirements Analysis

Specification & architecture design

2

Hardware Design

Schematic, PCB layout, prototyping

3

Firmware Development

Drivers, protocols, application logic

4

Testing & Validation

Unit tests, integration, stress testing

5

Delivery & Support

Documentation, training, warranty

Full Deliverables Per Stage

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Requirements

  • โœฆ System architecture spec
  • โœฆ Block diagram
  • โœฆ FreeRTOS task plan
  • โœฆ Protocol selection
๐Ÿ”ง

Hardware

  • โœฆ Schematic source files
  • โœฆ Multilayer PCB layout
  • โœฆ Complete BOM
  • โœฆ EMC/DFM report
๐Ÿ’ป

Firmware

  • โœฆ STM32Cube project
  • โœฆ MISRA-C source code
  • โœฆ Modbus/MQTT/TLS stack
  • โœฆ Unit test scripts
๐Ÿงช

Testing

  • โœฆ 72h stability log
  • โœฆ ESD/RF immunity records
  • โœฆ Flash wear verification
  • โœฆ Conformance report
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Mass Production

  • โœฆ Flash programming tool
  • โœฆ Factory test script
  • โœฆ Certificate workflow
  • โœฆ OTA deployment guide
๐Ÿ“š

Documentation

  • โœฆ Technical specification
  • โœฆ User manual & API docs
  • โœฆ Manufacturing guide
  • โœฆ Training materials

Our Services in Detail

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STM32 Firmware Development

Professional STM32 firmware for industrial and commercial applications โ€” from bare-metal drivers to full RTOS-based gateway stacks.

  • STM32H7 edge gateway multitasking โ€” FreeRTOS priority scheduling with <1ms deterministic response
  • Multi-protocol conversion โ€” Modbus RTU/TCP โ†” MQTT/TLS, multi-network redundancy
  • Industrial sensor processing โ€” 4-20mA, PT100 analog acquisition with digital filtering
  • Reliable data handling โ€” Flash wear leveling, circular logging, exponential backoff reconnection
  • MISRA-C:2012 compliance โ€” Static memory allocation, lint-validated code
FreeRTOSUART/SPI/I2C/CANModbus RTU/TCPMQTT/TLSUSBBootloaderMISRA-C

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Industrial IoT Security Development

EXCLUSIVE

Security-hardened embedded systems for industrial deployments โ€” from secure boot to encrypted cloud communication. Most outsourcing firms skip this; we make it standard.

  • Secure Boot & Flash read protection โ€” Prevent unauthorized firmware execution
  • X.509 device certificate identity โ€” Unique per-device cloud authentication
  • AES-256-GCM TLS encrypted MQTT โ€” End-to-end sensor-to-cloud protection
  • Signed secure OTA firmware update โ€” Anti-tampering, rollback protection
  • IEC 62304 safety compliance โ€” Documentation for regulated industries
Secure BootX.509AES-256-GCMTLS 1.3Signed OTAIEC 62304

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PCB Design

Complete PCB services using Altium Designer and KiCad โ€” from schematic capture to multilayer layout with EMC optimization and DFM analysis.

  • Industrial isolation protection โ€” 2.5kV opto-isolation for RS485, TVS surge protection
  • Wide voltage power circuit โ€” 9-36V DC-DC with reverse polarity & over-voltage protection
  • IP65 enclosure hardware matching โ€” Board outline & connector placement for industrial enclosures
  • Multilayer (12+) HDI layout for dense gateway designs
  • EMC/EMI simulation-guided stackup & routing
Altium DesignerKiCadMultilayer (12+)EMC/EMIDFM2.5kV Isolation

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Hardware Design

MCU circuit design, sensor interfaces, power supply design, and schematic capture โ€” from concept through prototyping to mass production.

  • MCU circuit design with STM32 F1/F4/H7/L4/G0 families
  • Sensor interfaces: analog (4-20mA, 0-10V, PT100), digital (I2C, SPI)
  • Industrial power supply: wide-input DC-DC, battery backup, UPS integration
  • Schematic capture with design rule verification
  • Functional prototype assembly & bring-up testing
MCU CircuitsSensor InterfacesPower SupplySchematic Capture

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Industrial Control

PLC communication, Modbus protocols, CAN bus integration, HMI development, and SCADA system integration for factory floor automation.

  • Multi-Modbus slave polling optimization โ€” Intelligent scheduling for 32+ slave devices
  • Long cable EMC anti-interference design โ€” Verified on 500m+ industrial bus runs
  • CAN/CANopen protocol implementation & stack integration
  • SCADA system Modbus gateway bridging
  • HMI display with LVGL/TouchGFX on STM32
PLCModbus RTU/TCPCAN BusCANopenHMISCADA

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IoT Solutions

WiFi, Bluetooth, LoRa, NB-IoT connectivity with cloud platform integration, OTA updates, and remote device management.

  • Multi-link industrial edge gateway โ€” Ethernet/Wi-Fi/Cellular auto-failover with offline caching
  • Remote device shadow management โ€” MQTT last-will, desired/reported state sync
  • Offline data cache โ€” Circular flash buffer for network outage, auto-sync on reconnection
  • AWS IoT Core / Azure IoT Hub integration
  • Secure OTA firmware update with rollback protection
WiFi / BLELoRa / NB-IoTAWS IoTAzure IoTCloud IntegrationOTA Updates

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Power Supply Design

Custom AC-DC and DC-DC power solutions for industrial embedded systems โ€” from wide-input converters to precision LDO rails.

  • Wide-input DC-DC converters โ€” 9-36V industrial supply with reverse polarity & surge protection
  • Battery management systems โ€” Li-Ion/LiFePO4 charging, fuel gauging, and UPS integration
  • GaN/SiC high-efficiency designs โ€” Up to 5kW with synchronous rectification
  • EMI/EMC optimized layout โ€” Pre-compliance tested power stages
DC-DC ConvertersBMSGaN/SiCEMI/EMC

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Embedded Linux Development

Custom Yocto/Buildroot BSP development, kernel driver porting, and secure OTA for i.MX, AM335x, and STM32MP platforms.

  • Yocto & Buildroot BSP โ€” Custom Linux distributions with optimized boot time
  • Kernel driver development โ€” SPI, I2C, USB, PCIe, and MIPI-CSI peripheral drivers
  • Secure OTA & A/B updates โ€” SWUpdate-based dual-bank firmware update with rollback
  • Device tree configuration โ€” Pin muxing, clock tree, and power management tuning
YoctoBuildrooti.MXDevice TreeSWUpdate

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MCU Firmware Development

Low-level firmware, bootloaders, and peripheral drivers for ARM Cortex-M and RISC-V microcontrollers โ€” bare-metal or RTOS-based.

  • Custom bootloader design โ€” UART/USB/CAN-based firmware update with CRC32 validation
  • Peripheral driver library โ€” I2C, SPI, UART, CAN, ADC, DAC, PWM, DMA, and timer HAL
  • RTOS integration โ€” FreeRTOS, ThreadX, and Zephyr with task priority optimization
  • Low-power optimization โ€” Sleep/Stop/Standby modes with wake-up source management
ARM Cortex-MRISC-VFreeRTOSZephyrBootloader

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Electronic Prototype Development

Rapid electronic prototyping from concept to functional hardware โ€” schematic capture, PCB fab, assembly, and bring-up testing in weeks.

  • Proof-of-concept builds โ€” Functional prototypes with real components, not breadboards
  • Rapid PCB fabrication โ€” 2-4 layer boards in 5-7 working days with full assembly
  • Bring-up & validation โ€” Power-on testing, signal integrity verification, and firmware debugging
  • Design iteration โ€” Fast feedback loop between schematic revision and physical testing
Rapid PrototypingPCB AssemblyBring-UpDFM

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ODM Services

Full-cycle Original Design Manufacturing โ€” we design and manufacture electronic products under your brand. From concept to certified product.

  • Turnkey product development โ€” Hardware, firmware, enclosures, and packaging designed for your brand
  • Certification support โ€” CE, FCC, RoHS, and UL pre-compliance testing and documentation
  • IP transfer included โ€” Full ownership of schematics, PCB files, firmware source, and BOM
  • Mass production ready โ€” Factory test fixtures, programming tools, and QC procedures delivered
TurnkeyCE/FCCIP TransferMass Production

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OEM Services

Build-to-print manufacturing โ€” we produce your existing design with full BOM procurement, assembly, and quality control.

  • Build-to-print assembly โ€” SMT and through-hole PCB assembly from your Gerber and BOM files
  • Component procurement โ€” Global supply chain with second-source alternatives and shortage mitigation
  • Quality assurance โ€” AOI, X-ray, functional testing, and burn-in per your specifications
  • Conformal coating & enclosure โ€” IP-rated protection for industrial and outdoor deployments
SMT AssemblyBOM ProcurementAOI/X-RayConformal Coating

Engagement Models –>

Engagement Models

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Fixed-Price Turnkey

Hardware + firmware + testing in one fixed-cost package. Best for complete STM32 gateway customization.

  • Defined scope & milestone payments
  • No billing surprises
  • Full deliverables per stage
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Time & Material

Dedicated embedded engineering support by the hour. Ideal for iterative optimization & bug fixes.

  • Flexible scope adjustments
  • Weekly progress reports
  • Direct engineer communication
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Technical Consulting

Short-term expert engagement for architecture review, security audit, or technology selection.

  • 1-2 week focused engagement
  • Actionable recommendations
  • No long-term commitment
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Long-Term Maintenance

Post-launch 1/3/5-year firmware update and remote troubleshooting packages.

  • Scheduled security patches
  • Feature update releases
  • Priority bug fix SLA

Project Case Studies

Factory Automation

STM32H7 Temperature & Humidity IoT Gateway

Challenge: Unstable Modbus readings and frequent MQTT disconnections in high-EMI workshop with 24+ sensor nodes.

Solution: Isolated RS485 circuit with TVS protection, FreeRTOS priority scheduling, TLS MQTT with exponential backoff reconnection.

Result: 72-hour zero packet loss test passed. 2,000+ units deployed across 3 factory sites.

Energy & Power

Solar Energy Storage Modbus-to-MQTT Gateway

Challenge: Remote solar sites needed real-time BMS monitoring via Modbus, with intermittent cellular and -30ยฐC winters.

Solution: Wide-temperature STM32H7 hardware with NB-IoT fallback, 72-hour offline flash buffer, auto-sync on reconnection.

Result: Zero data loss during connectivity gaps. Deployed across 50+ remote sites with centralized cloud dashboard.

Technologies We Use

RTOS & OS
Industrial Protocols
Connectivity
Cloud Platforms
Design Tools

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Cost-Effective

Competitive pricing with flexible engagement models tailored to your budget.

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Global Support

24/7 technical support across time zones. Multi-language team ready to help.

๐Ÿ“ž Get a Free Quote


Or email us directly:
cedar@innovchip.net