Frequently Asked Questions
Answers to common questions about our embedded systems services
STM32 Firmware Development FAQ
What is STM32 firmware development?
STM32 firmware development involves writing embedded software for STMicroelectronics’ STM32 microcontroller family. This includes bare-metal programming, FreeRTOS-based real-time systems, peripheral drivers (UART, SPI, I2C, CAN), communication protocol implementation (Modbus, TCP/IP), and application-layer logic for industrial and commercial products.
How much does STM32 development cost?
Cost depends on project complexity, required peripherals, communication protocols, and timeline. A simple STM32 firmware project starts from $2,000-5,000, while complex multi-protocol industrial systems can range $10,000-50,000+. We provide free project assessment and detailed quotes.
How long does STM32 firmware development take?
Timeline varies by complexity: simple sensor interface projects (2-4 weeks), standard industrial controllers (4-8 weeks), complex multi-protocol systems (8-16 weeks). We use agile methodology with regular milestones so you can track progress throughout the development cycle.
Can you migrate STM32F1 to STM32H7?
Yes, we specialize in STM32 family migration. We handle register-level code porting, HAL/LL driver adaptation, clock tree reconfiguration, memory layout optimization, and peripheral compatibility testing. Migration projects typically take 2-6 weeks depending on the codebase size and peripheral usage.
Do you provide STM32 bootloader development?
Yes, we develop custom bootloaders for STM32 including UART/IAP bootloaders, USB DFU bootloaders, CAN-based OTA updates, secure boot with encryption, dual-bank fail-safe updates, and bootloader integration with your production workflow.
What communication protocols do you support on STM32?
We support all major STM32 peripherals: UART/USART, SPI, I2C, CAN (CANopen/J1939), Modbus RTU/TCP, Ethernet (TCP/IP, UDP, MQTT, HTTP), USB (Device, Host, OTG), SDIO, RS485, LIN, OneWire, IRDA, and custom proprietary protocols.
Do you provide source code and documentation?
Yes, all projects include complete source code delivery, technical documentation (architecture diagrams, API reference, integration guide), and a handover session with your engineering team. We also provide ongoing maintenance and support options post-delivery.
PCB Design FAQ
How much does PCB design cost?
PCB design costs depend on layer count, component density, and design complexity. Simple 2-layer boards start at $500-1,500, 4-6 layer boards at $2,000-8,000, and complex 8+ layer high-speed designs at $8,000-20,000+. All quotes include schematic capture, layout, DFM analysis, and Gerber file delivery.
What files are needed for PCB manufacturing?
We deliver complete manufacturing packages: Gerber files (RS-274X), drill files (Excellon), BOM (Bill of Materials) in CSV/Excel format, pick-and-place files, assembly drawings, fabrication notes, and IPC-compliant documentation for your PCB manufacturer.
What is a 4-layer PCB and when do I need one?
A 4-layer PCB has 4 copper layers (typically Top-GND-Power-Bottom). You need 4+ layers when: using high-density components requiring power planes, designing high-speed signals needing impedance control, working with mixed analog/digital circuits, or when EMI/EMC compliance is required. Most of our industrial designs use 4-6 layers.
How do you reduce EMI in PCB design?
Our EMI reduction techniques include proper ground plane design, controlled impedance routing, signal integrity analysis, decoupling capacitor placement, differential pair routing, via stitching, split plane management, and EMC simulation during the design phase. We follow CISPR standards for industrial environments.
Can you redesign an existing PCB?
Yes, we offer PCB redesign services including component obsolescence replacement, cost optimization (BOM value engineering), manufacturing yield improvement, performance upgrades (faster MCU, better components), form factor changes, and legacy board reverse engineering from samples or old Gerbers.
Industrial Control & IoT FAQ
What is Modbus RTU vs Modbus TCP?
Modbus RTU is a serial protocol running over RS485/RS232, commonly used in industrial field devices. Modbus TCP wraps Modbus data in TCP/IP packets for Ethernet networks. We implement both protocols and can build gateways that bridge between them, enabling legacy serial devices to connect to modern networked systems.
What is CAN Bus and why is it used?
CAN Bus (Controller Area Network) is a robust serial communication standard designed for automotive and industrial applications. It features differential signaling for noise immunity, built-in error detection/correction, multi-master arbitration, and speeds up to 1 Mbps. It’s ideal for real-time control systems, vehicle networks, and factory automation.
What is PLC communication?
PLC (Programmable Logic Controller) communication connects industrial controllers to sensors, HMIs, SCADA systems, and other equipment. We implement protocols including Modbus, EtherNet/IP, PROFINET, OPC UA, and custom proprietary protocols to integrate your embedded devices with existing PLC infrastructure.
What IoT connectivity options do you support?
We support full IoT stack development: WiFi (ESP32, WiFi modules), Bluetooth/BLE (nRF52, CC2640), LoRaWAN (SX1276/SX1262), NB-IoT/Cat-M1 cellular, Zigbee, Thread/Matter, MQTT cloud platforms (AWS IoT, Azure IoT Hub, custom servers), and edge computing solutions with local data processing.
What is your typical development process?
Our process follows 5 phases: (1) Requirements Analysis – detailed specification and architecture design; (2) Hardware Design – schematic, PCB layout, prototyping; (3) Firmware Development – drivers, protocols, application logic; (4) Testing & Validation – unit tests, integration tests, environmental testing; (5) Delivery & Support – documentation, training, warranty period.
Do you work with international clients?
Yes! We serve clients globally across North America, Europe, Southeast Asia, and beyond. Our team works across time zones with English-language project management, video conference meetings, and cloud-based collaboration tools. Shipping of prototypes worldwide is arranged through our logistics partners.