STM32 Sequential Rain Sampler

@amelectronics

I am a skilled and reliable Embedded Systems Engineer with over 6 years of hands-on experience in Arduino, ESP32/ESP8266, and microcontroller-based development. I specialize in designing efficient, stable, and scalable embedded solutions, turning ideas into fully functional hardware-software systems. I have a strong background in electronics, sensors, communication protocols (UART, I2C, SPI, MQTT, WiFi, BLE), and real-time embedded systems. My development approach focuses on clean, well-structured, and well-documented firmware, ensuring long-term reliability and easy maintenance. I also provide thorough testing, debugging, and performance optimization, including power efficiency improvements where required. I am a detail-oriented engineer with strong problem-solving skills and extensive experience in hardware debugging and firmware optimization. Beyond technical expertise, I value clear communication, meeting deadlines, and maintaining high client satisfaction. I work closely with clients to fully understand project requirements and deliver high-quality results. Pricing is flexible and can be discussed based on project scope and complexity. I am open to both short-term and long-term projects. Let’s work together to build a professional, reliable, and efficient embedded system for your needs.

@cpp2048

With over 8 years industrial product design experience in these areas specially with STM32 controller and RTOS firmware development I can assist in this development. Let's get connected to discuss in details.

@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!

@hayteekeys

Hi, KINDLY READ THROUGH MY PROPOSAL STM32 outdoor datalogger specialist with 8+ years delivering solar-powered environmental monitoring systems. I can provide a complete, field-proven hardware + firmware solution for your sequential rain-sampling station, schematic to PCB, firmware, and solar power management ready for manufacturing and immediate field test. MY APPROACH ✅ STM32 schematic & PCB with motor driver, rain sensor interface, SD card, and LoRa (200 m+ range)
✅ Robust C firmware (STM32Cube/HAL + FreeRTOS) for debouncing, precise carousel indexing (±5°), dual logging (SD + wireless), RTC, and low-power duty cycling
✅ Solar + Li-ion charging circuit with detailed power budget analysis
✅ Full assembly drawings, BOM, and simple bench/field test procedure RELEVANT PROJECTS • Solar-powered STM32 rain & weather station with LoRa, SD logging, and motorized sampling • Field-deployed environmental sampler with motor control, rain detection, and wireless telemetry DELIVERABLES • Production-ready schematic + PCB files (Gerbers, 3D model) • Well-documented firmware source code • BOM, power analysis, assembly drawings, and test procedure QUESTIONS 1 Preferred wireless (LoRa strongly recommended for range)? 2 Any specific rain sensor or motor model? 3 Maximum PCB size or enclosure constraints? 4 Target timeline for first prototype? Ready to start immediately with daily check-ins. Let’s build your reliable rain-sampling station

@debosx

Hello! I'm a highly skilled PCB Designer with over 10 years of expertise in delivering reliable and efficient PCB designs. I specialize in creating precision designs tailored to client's needs, utilizing top-tier design tools such as Altium Designer, Autodesk Eagle, KiCad, EasyEDA, Siemens PADS, DipTrace, Allegro/OrCAD, Fritzing and Proteus. My goal is always to ensure the highest quality and performance in every project. Core Expertise : • Schematic Capture & Layout Design • Component Selection & Library Management • Reverse Engineering (PCB Replication, PCB Cloning) • Gerber, BOM, and CPL File Generation & Manufacturing Support • Design for Manufacturability (DFM) and Design for Assembly (DFA) • PCB Design & Development (Single, Double, Multi-Layer, Flexible PCBs) Industries Served : • Medical Devices • Telecommunications • Consumer Electronics • Industrial Equipment • Automotive Electronics • Safety and Security Devices Why Choose Me? • Attention to Detail and Commitment to Quality • Strong Communication Skills & Client-Centric Focus • Timely Delivery & Flexible Approach to Meet Project Requirements I would love to help you with your next PCB design project. Feel free to reach out, and let’s discuss how I can bring your ideas to life! Best Regards, Utpal

@ThynkLoop

Hi, I can develop a complete STM32-based sequential rain sampling system with reliable sensing, precise motor control, data logging, and wireless monitoring, ready for manufacturing and field testing. I have experience in STM32, embedded systems, motor control, and IoT data logging. I will design a robust hardware solution including sensor interface, motor driver, SD card logging, and a suitable wireless module (LoRa recommended for long-range outdoor use). The firmware will be structured for accurate event detection, precise bottle indexing, low-power operation, and reliable data handling. Scope: *System architecture and block diagram *Schematic and PCB design (STM32 + peripherals) *Motor control for carousel indexing (±5° accuracy) *Rain sensor integration and debouncing *SD card logging + RTC timekeeping *Wireless communication (LoRa/Wi-Fi/BLE) *Power design (solar + Li-ion battery) *Firmware with RTOS or lightweight scheduler Deliverables: *Schematic, PCB, Gerber files *BOM with components *Firmware source code *Power budget and charging design *Assembly drawings and test procedure Approach: *Design reliable sensing and motor control system *Implement accurate indexing and event logging *Use LoRa for stable long-range communication *Optimize firmware for low power and field operation *Validate system performance against requirements I will deliver a robust, low-power, and field-ready rain sampling system.

@Sathiyabirla9

Hi, I reviewed your requirement for a PCB and embedded system design. I have strong experience in designing reliable circuits using Arduino, ESP8266/ESP32, and sensor-based systems. I have already worked on projects like IoT monitoring systems, smart automation devices, and custom PCB designs, where accuracy and efficiency were critical. can help you with, Schematic design PCB layout (compact & noise-free) Embedded C programming Testing & debugging I will ensure a stable, production-ready design with proper component selection and optimization. Quick question: Do you need only design files, or full working prototype support as well? I’m ready to start immediately and deliver quality work on time. Thanks.

@mushtaqahmad20ma

Hi there, as an Electronics Engineer with extensive experience in STM32-based environmental monitoring and low-power wireless systems, I can deliver a production-ready solution for your sequential rain-sampling station. I have a great team proficient in industrial PCB layout and embedded C/C++ (STM32Cube/HAL), and we specialize in creating high-reliability data loggers that balance precise motor control with strict power budgeting. For this project, I will implement an STM32L4 series MCU to handle the dual-path logging (SD card + LoRa for 200m+ range) while managing the carousel indexing via a dedicated stepper driver for $\pm5^\circ$ accuracy. My deliverables include the complete Altium/KiCad files, a robust FreeRTOS firmware architecture, and a full solar-to-Li-ion power analysis to ensure the system survives extended cloudy periods. I will provide my previous projects, including assembled boards for similar field-deployed sensors, to demonstrate my layout style and commitment to "humanized," clear technical documentation for your assembly and testing