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I need a complete schematic that lets the BL0906 energy-meter IC into a three-phase design and talk to it through a standalone STM32F103CBT6 via SPI. The STM32 only has one job: grab raw registers from the BL0906, crunch RMS voltage and current, active power, active energy, fault flags and line frequency, then pass the results to my main controller (an ESP32) via uart. Key electrical details • Current input must accept either conventional CTs or voltage-output sensors through a jumper-selectable. • Voltage sensing is handled by a ZMPT101B module. • I want a well-calibrated passive filter stage on every phase to tame mains transients and high-frequency noise before they reach the BL0906. Keep the cut-off practical for 50/60 Hz metering accuracy while giving good surge immunity. • Calibration option required for accuracy. What I expect from you • A clear, production-ready schematic (Editable file in KiCad ). • Annotated BOM with part numbers that are easy to source. • Brief design notes explaining CT burden selection, jumper logic and the passive filter design so I can tweak values if my sensor mix changes later.
Project ID: 40673793
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Active 6 days ago
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I can deliver a complete, production-ready KiCad schematic for your 3-phase BL0906 energy metering system, including the standalone STM32F103CBT6 SPI interface and UART communication with the ESP32. I’ll design the current-input stage with jumper-selectable CT and voltage-output sensor options, including appropriate CT burden protection and scaling. The ZMPT101B voltage sensing paths will include carefully selected passive RC filtering and surge/noise protection suitable for accurate 50/60 Hz measurement. The design will cover RMS voltage/current, active power and energy, line frequency, fault/status registers, calibration provisions, and clean signal conditioning for reliable measurements. I’ll also provide an annotated, sourceable BOM with suitable part numbers and concise design notes explaining filter values, jumper logic, burden selection, calibration, and sensor-value changes. You will receive an organized, editable KiCad project ready for PCB development and future modification. I’ll focus on accuracy, robustness, component availability, and clear documentation throughout. Give me one opportunity to handle your project. I assure you I will complete it with full dedication, accuracy, and professionalism.
₹12,000 INR in 7 days
0.0
0.0
5 freelancers are bidding on average ₹10,500 INR for this job

Hi there, I carefully reviewed your requirements and can design the complete production-ready KiCad schematic around the BL0906, STM32F103CBT6, and ESP32 UART interface. I have worked with the components and technologies involved in this project, including STM32, ESP32, SPI/UART communication, CT-based current sensing, voltage sensing, analog filtering, calibration circuits, and energy-metering front ends. I can also implement the jumper-selectable CT/voltage-output sensor inputs, ZMPT101B voltage sensing, properly designed passive filtering, and calibration provisions for accurate three-phase measurements. You will receive the editable KiCad schematic, annotated BOM with readily available parts, and clear design notes covering burden resistor selection, filtering, jumper configuration, and calibration. Given my experience with embedded and mixed-signal hardware, I can complete this efficiently while keeping the design practical for production and future modification. Just send me a message and I can get started. Best regards, Samuel tshibangu
₹12,500 INR in 1 day
6.5
6.5

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq
₹10,000 INR in 7 days
5.3
5.3

With over a decade of experience in Electrical Engineering and Embedded Systems, I am more than qualified to tackle your 3-Phase BL0906 Energy Metering Schematic project. Moreover, my proficiency with the STM32 microcontroller and other relevant tools like KiCad will make your schematic design process effortless. I fully acknowledge the importance of well-calibrated, reliable electrical systems, and guarantee top-notch filter design on every phase to enhance metering accuracy and immunity against mains transients. My hardware expertise aligns perfectly with your requests, with an impressive track record in low-level microcontroller programming - perfect for handling your BL0906 IC communication via SPI. Additionally, my familiarity with ESP32 and UART will ensure seamless integration with your primary controller. I understand that future adaptability is key; therefore, I'll provide detailed design notes so that you can easily tweak values if needed. Lastly, what sets me apart from others is my capability to envisage projects holistically. Given that you currently face the challenge of combining Al solutions and reliable hardware implementation, let me assure you that this is where I thrive. My team is already well-versed in deploying AI systems, edge computing, and sensor networks across various platforms and so leaving a lasting impression on your project would be our utmost desire.
₹7,000 INR in 7 days
4.9
4.9

Siliguri, India
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