STM32 Triple-Port Controller PCB

@amelectronics

Hi, I have experience in designing Circuits and can complete your project. I have expertise in the following: 1- Designing schematic and PCBA 2- Ordering the PCBA and getting boards manufactured. 3- Writing firmware for the PCBA to make sure everything works as expected. 4- I can also develop smartphone apps to communicate and control the hardware. If you wish we can discuss in chat. Thank you.

@mairajali11

With over 8 years of experience as an Electrical/Electronics Engineer and Professional PCB Designer, I have continuously pushed the boundaries for designing high-quality circuit boards using platforms like Eagle, Altium, KiCAD, and EasyEDA. In addition to my robust experience in PCB design, I also am very comfortable working with STM32 hardware, which makes me the perfect fit for this project. I've demonstrated my skills in robust power design in several projects, implementing over-voltage, short-circuit and over-current protection to ensure reliability – a critical element in this task. If bringing your board to life on different interfaces like RS-485, RS-232 and UART linked to a serial-to-TCP module is your goal, look no further. I am well versed in these areas with hands-on experience. Furthermore, as a Preferred Freelancer and a regular ranker among the top 1% of skilled professionals in the field, I assure you that your project will receive nothing but the best quality work delivered on time and within budget. My passion for PCB design and embedded systems along with my dedication to client satisfaction make me outstanding at what I do. Let's turn your great idea into reality together! Feel free to reach out with any questions or clarifications about the project anytime – I’m available 24/7.

@Amidst

Hey there! I’m Alok, A PCB, Circuit and Mechanical designer with a passion for turning ideas into rock-solid, high-performance circuit boards. even expert on Python, C, C++ With nearly a decade of experience, I’ve tackled everything from compact consumer gadgets to complex industrial systems—always with a focus on precision, efficiency, and reliability. # Schematic & Layout Design – Clean, optimized, and manufacturable. # Component Selection & Library Management – No surprises, just the right parts for the job. # Reverse Engineering – PCB cloning, replication, and improvements. # Gerber, BOM & CPL Generation – Ready for seamless production. # DFM & DFA Expertise – Because great design means smooth manufacturing. # Multi-Layer, Flex, & High-Density PCB Design – Whatever the project needs. If you need a PCB and Code that’s efficient, reliable, and built for real-world performance, let’s chat. I’d love to help bring your project to life!

@Mahmoud00Ibrahim

Hi, I’m an experienced PCB & Embedded Systems Engineer with strong hands-on experience in STM32, RS-485/RS-232, UART, TCP/IP modules, and robust power/protection design. I can design the complete controller from schematic through production-ready PCB, including: STM32F103CBT6 and SWD programming/debugging Independent RS-485, RS-232, and UART-to-TCP interfaces Over-voltage, over-current, short-circuit, ESD and reverse-polarity protection Proper power/signal-domain separation and reliable grounding Production-ready Gerbers, BOM, P&P, drill files and fabrication notes Minimal firmware for echo and TCP socket testing Clear design report documenting protection and component choices I have worked on advanced STM32 industrial boards with CAN, RS-485, USB, high-speed interfaces and multiple power rails, so reliability and manufacturability are a key part of my design approach.

@shadabkhan92

With over a decade of experience in the field of electronics and embedded systems, I bring to the table a unique blend of AI design and manufacturing knowledge that makes me an ideal fit for your STM32 Triple-Port Controller PCB project. Not only do I have comprehensive know-how on using STM32F1-series microcontrollers for your chosen tasks, but I also specialize in building reliable, production-ready hardware infrastructure - a skill that is crucial for your project. When it comes to PCB design, my proficiency with Altium, KiCad, and EasyEDA ensure high-quality and properly isolated layouts that distinguish between high-speed and power domains - just as you requested. Moreover, my experience in working with IoT devices including ESP32/STM32 firmware development combined with my understanding of MQTT-connected sensor networks will prove advantageous in building the UART linked to the onboard serial-to-TCP module that speaks plain TCP/IP - significantly enhancing its performance. Additionally, my solid grasp on power design will aid in seamlessly integrating over-voltage, short-circuit, and over-current protection across the three interface blocks ensuring maximum reliability. Lastly, undertaking end-to-end builds like Odoo ERP along with manufacturing custom IoT hardware reflects my commitment to turning conceptual projects into real-world-working solutions – something your project demands. Let's join hands and bring your STM32 Triple-Port Controller PCB dream to reality!

@danish2051

I am an Embedded Systems and PCB Design Engineer with experience in Altium Designer, Kicad, Easyeda, Protious and custom hardware development. I can design your PCB from schematic to production-ready files, including: • Schematic Design • PCB Layout • Component Selection • Design Rule Check (DRC) • Gerber Generation • BOM Preparation • Manufacturing Support (JLCPCB, PCBWay, etc.) I have experience with ESP32, STM32, sensor interfaces, power supplies, RF modules, Ethernet, and industrial electronics. Please share the project requirements, schematic (if available), board dimensions, and any special requirements. I can start immediately. Looking forward to working with you.

@mcollinscalz

Hi there, My name is Collins and am an embedded and robotics engineer, your requirements for a compact, ultra-reliable triple-serial controller board built around the STM32F103CBT6 align directly with my expertise in industrial PCB design, STM32 microcontrollers, and interface protection. How I Will Solve Your Problem: Triple Serial Architecture: Map USART1 (RS-232), USART2 (RS-485), and USART3 (TCP/IP module) with non-overlapping DMA/interrupt priorities for seamless concurrent operation. Industrial Protection Topology: Integrate TVS diodes, resettable PTC fuses, and spark gaps on RS-485 (A/B) and RS-232 lines, along with reverse-polarity, over-voltage, and inrush protection on the main power input. PCB Layout & Isolation: Design a 2/4-layer PCB in KiCad/Altium with dedicated ground planes, clear clearance zones around the power section, and isolated trace routing for noise-free serial comms. Deliverables: Complete Schematics & PCB Layout (Altium/KiCad/EasyEDA). Manufacturing Package: Gerbers, Drill files, Pick-and-Place, and BOM with verified LCSC/DigiKey part numbers. Bare-metal/HAL C firmware demonstrating echo tests across RS-232/RS-485 and TCP socket connectivity. Design report covering protection calculations and stackup specs. Ready to review your dimensions and specific TCP module choice to get started immediately!

@chetanc20

Experienced in STM32 hardware, RS-485/RS-232, UART, and robust power protection. I can design the complete schematic and a 2/4-layer PCB, including protection circuits, BOM, Gerbers, fabrication files, and basic firmware for port testing. I will ensure a reliable, compact, production-ready design with proper grounding and isolation.

@Santoshchaulaga

Hello, I am Santosh Chaulagain, a professional Electrical Engineer and PCB Designer with over 7 years of experience in schematic design, PCB layout, and embedded systems, including ESP32, IoT devices, analog and digital circuits. I have successfully completed multiple projects for clients worldwide, delivering reliable and manufacturable designs. I have carefully reviewed your project requirements and I am confident that I can provide a high-quality solution tailored to your needs. My expertise includes PCB design using industry standards, component selection, BOM preparation, Gerber generation, and design optimization for cost and performance. I always ensure that my designs are fabrication-ready and tested for reliability. I focus on clear communication, timely delivery, and customer satisfaction. I am happy to discuss your project in detail and provide revisions until the final result meets your expectations. Looking forward to working with you. Best regards, Santosh C. Electrical Engineer | PCB Designer | ESP32 & IoT Specialist

@alluankit01

Hi, I can design the STM32F103CBT6 controller board with RS-485, RS-232, and UART-to-TCP interfaces, including protection circuitry and minimal validation firmware. My approach will cover: • STM32F103CBT6 48-pin LQFP design • Independent RS-485 and RS-232 channels • UART interface to serial-to-TCP module • SWD programming/debug header • Input over-voltage, over-current and short-circuit protection • Interface ESD/transient protection • Proper grounding, decoupling and signal routing • 2/4-layer PCB layout • BOM with supplier part numbers • Gerber, drill, PnP and fabrication files • Echo-test firmware for RS-485/RS-232 • TCP socket connection test • Protection/design documentation • Two review iterations I can work in KiCad and keep the project clean and production-ready. I work remotely on schematic, PCB, firmware and documentation only. Physical fabrication and bench testing would be performed on your side, and I can support debugging/revisions from SWD logs, measurements and test results. Best regards Ankit

@caodx

Hello, I am an embedded hardware engineer with extensive experience designing STM32-based industrial control boards, including RS-485, RS-232, Ethernet/TCP communication, power protection, and bootloader development. This project aligns closely with my background. I have designed multiple STM32F1/F4 products featuring isolated and non-isolated serial interfaces, surge and ESD protection, over-current protection, watchdog recovery, and reliable field operation. I can develop the complete schematic, PCB layout (2 or 4 layers), manufacturing package, and a minimal firmware package to verify all communication channels. For this design, I will focus on robust power-input protection, interface-level TVS/ESD protection, proper grounding strategy, signal integrity, and reliable SWD debugging access. The TCP/IP serial module integration, RS-232/RS-485 transceivers, and bootloader test firmware will be fully validated before delivery. Deliverables will include source files (Altium/KiCad/EasyEDA), Gerbers, drill files, BOM, pick-and-place data, design report, and demonstration firmware for communication testing. I am comfortable working through the two review iterations and can support fabrication bring-up if needed. I would be happy to discuss preferred power-input specifications, operating voltage range, and TCP module selection before starting. Looking forward to working with you.

@Webslinger01

Three serial channels with real protection on each, plus a TCP link, is exactly the kind of board where the schematic review matters more than the layout. Here's what I bring to this: → I build STM32 hardware with RS-485 half-duplex and RS-232 transceivers, including TVS, polyfuse and current-limited paths on every interface block → I've shipped boards where the enclosure and firmware were designed alongside the PCB, so pinout and bootloader stay drop-in from day one → I handle schematic, 2/4-layer layout with split ground and power domains, Gerbers, BOM with supplier part numbers, and firmware → STM32F103CBT6 in LQFP48 is a part I know well, and pin-compatible F1 alternatives are easy to substitute My approach: → Send me your interface requirements and I'll lock the protection topology and transceiver selection first → I'll design schematic and layout, then write the bootloader firmware with RS-485 and RS-232 echo tests plus a socket connect test → You get the design report, all fab files, and I'll support your two review iterations before fabrication For this scope, the cost would be 10000 INR, covering schematic through tested firmware and the design report. Happy to walk you through our approach and past work on a chat.

@soniaer987

Your STM32F103CBT6 board with RS-485, RS-232 and a TCP socket test is exactly the kind of hardware I enjoy building. → I've shipped STM32 boards with RS-485/Modbus and MQTT cloud links, so three serial channels is familiar ground → I'll deliver schematic, 2/4-layer layout, Gerbers, BOM, bootloader firmware and a short protection report → Full stack in-house: PCB design, firmware and enclosure → First draft in about 3-5 days, revisions included

@Stams2k

Hi, This project is very close to the type of embedded hardware I have been working on recently. My background includes PCB and schematic design, embedded systems, serial communication hardware, protection circuitry and firmware development. I have designed hardware around RS-232, RS-422/485, UART and microcontroller-based systems, including interface protection, component selection, PCB layout, debugging access and manufacturing documentation. I work mainly in Altium Designer and have my own active Altium subscription, so I can deliver the complete editable Altium project together with Gerbers, drill files, pick-and-place data, BOM and fabrication notes. On the embedded side, I have developed C firmware for microcontroller-based hardware, including serial communication, peripheral interfacing, debugging and board bring-up. I have worked directly with dsPIC-class embedded systems and other MCU platforms, so adapting the firmware to the STM32F1 architecture and toolchain is well within the scope I can handle. One of my larger previous projects was a complete EEG acquisition and analysis system involving low-noise analog electronics, PCB design, embedded acquisition and software integration. The work resulted in a peer-reviewed Sensors publication where I am the first author. Best regards, Stamatios

@matheeshadesilva

Hi, I’m interested in designing your STM32F103CBT6 controller board. I have experience with STM32 embedded systems, RS-232, RS-485, UART/TCP communication, power protection, and custom PCB design. I can provide: * Complete schematic and 2/4-layer PCB * Robust over-voltage, over-current, short-circuit and ESD protection * RS-485, RS-232 and UART-to-TCP interfaces * Production-ready Gerber, drill, pick-and-place and BOM files * Supplier/manufacturer part numbers * Minimal firmware for RS-485/RS-232 echo and TCP socket testing * Short design and protection report * SWD programming/debug support I will focus on reliability, proper grounding, signal integrity, protection and manufacturability. I’m ready to start and can work through the two review iterations to deliver a fabrication-ready board. Best regards, Nadiranga

@recssystems

With over a decade of combined experience, my team and I at RECS Systems specialize in finding efficient solutions at the boundary of hardware and software. This makes us a perfect fit for your project that requires extensive STM32 hardware knowledge, robust power design, and excellent serial communication skills. To ensure reliability, we routinely integrate protection measures like over-voltage, short-circuit, and over-current protection on all power inputs. As you requested, we can use SonicF1 chipsets as an alternative with identical footprints if you're comfortable with the substitution, as long as the firmware and pinout remain compatible. In addition to our strong hardware background, we have expertise in various firmware aspects, including low-level microcontroller code. Our proficiency in embedded & firmware development from C/C++ bare-metal to RTOS is yet another reason why we will be the perfect partner for your project. We understand the importance of testing and guarantee to deliver a clean BOM with supplier part numbers along with properly isolated PCB layers to ensure minimum noise interference between high-speed and power domains. With your review at each stage of the design, we'll work together toward perfection while maintaining prompt communication and top-quality deliverables. I look forward to discussing further how we can bring your vision into reality. Let's get this ball rolling!

@ece067vikashpra8

I can design and deliver your robust, industrial-grade STM32F103CBT6 triple-port controller PCB complete with schematics, layout, production files, protection analysis report, and test firmware. Hardware & Protection Architecture MCU Core: STM32F103CBT6 (LQFP-48, 128KB Flash) with proper decoupling, HSE/LSE crystal layout, SWD debugging header, and BOOT jumper selection. Power Domain Protection: Reverse-polarity protection via P-Channel MOSFET, self-resetting PTC fuse for over-current protection, and TVS clamping diode for input surge/over-voltage protection preceding a wide-input LDO / Buck converter. RS-485 Interface: SP3485/THVD1450 transceiver with automatic or GPIO direction control, SM712 ESD/TVS array for bus line clamping, and series pulse-proof resistors/PTCs for short-circuit resilience. RS-232 Interface: MAX3232 / SP3232 driver with dedicated ESD protection array on TX/RX/GND lines. Serial-to-TCP Interface: Dedicated UART header routed to onboard transparent serial-to-Ethernet module (e.g., USR-K7 / WT32-ETH01 / W5500 topology) with isolated power rails. PCB Layout: 2-layer or 4-layer design (signal-GND-PWR-signal stackup) with ground flooding, isolated power/communication zones, clear star-grounding, and trace impedance matching. Firmware & Test Deliverables Test Firmware: Lightweight STM32CubeHAL C-code implementing full-duplex UART echo testing on RS-232 and RS-485 ports, plus AT-command/socket handshake verification for the TCP module.

@brayanl37

Bonjour, ​Fort d'une solide expérience en systèmes embarqués et programmation de microcontrôleurs STM32 (architecture ARM Cortex-M, STM32CubeIDE, C/C++), je suis convaincu d'être le candidat idéal pour mener à bien votre projet. ​Pourquoi me choisir : ​Maîtrise technique : Configuration des périphériques (UART, SPI, I2C, Timers, ADC, PWM) et gestion du firmware (HAL, LL, ou registre direct). ​Qualité & Fiabilité : Code propre, commenté, optimisé en mémoire et facile à maintenir. ​Résolution de problèmes : Expérience avancée en débogage (ST-Link, analyse logique) et respect des exigences temps réel (FreeRTOS si nécessaire). ​Je reste à votre disposition pour échanger sur les détails de votre cahier des charges et adapter ma stratégie à vos besoins précis. ​Bien cordialement, ​(Note : N'hésitez pas à personnaliser ou préciser s'il s'agit d'une application spécifique comme du traitement de signal, du contrôle moteur ou de

@rushab3330

Hi I am a hardware engineer with 8+ years of experience. Hardware design, I can help you with Schematic and PCB. design along with production documents from BOM, Gerber and Assembly drawings I have worked with STM controller in my career from F0 series to high performance H series Let me know if we can take this forward