Development of the circuitry for the data collection system (Master module + Analog input module)

Drawings & Diagrams, Engineering — incorrectly specified categories?

100 USD

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Title: Development of electrical schematics (EasyEDA) for data acquisition modules (STM32, precision ADC, galvanic isolation)

Task Description: We are looking for an experienced circuit engineer to develop the schematic diagrams for two boards (PCB design is not required at this stage).

What needs to be designed:

Master module: power input of 24V and communication with the external world via hardware-isolated RS-485.
Analog input module: digitization of two channels of industrial sensors (0-10V / 4-20mA). Based on a precision ADC (type ADS1248). A mandatory condition is the presence of an internal digital isolation barrier after the ADC. The boards communicate with each other via SPI.

Key requirements (Strict!):

Environment: only EasyEDA (Pro or Std).
Components: 100% of parts must have part numbers (C-parts) from the LCSC Electronics catalog, as the boards will go for automated PCBA.
Base MCU: STM32F103 (or your suggestions for modern equivalents).
A detailed, well-written technical specification with a ready reference architecture from Texas Instruments will be provided to the candidate.

🔥 Bonus: For the specialist who diligently and competently completes this stage (circuit design), a second paid stage — routing of these printed circuit boards (PCB Design) — will be guaranteed.

Proposals 3 Discussions

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Roman Chepurnoi

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Rating 147

Budget: 100 USD Deadline: 10 days

Good day!

I am interested in your project.

I have experience working with STM32 microcontrollers, digital interfaces (SPI, UART, RS-485), and electronic circuit design. I am ready to familiarize myself with the technical specifications and reference architecture from Texas Instruments and carry out the development of schematic diagrams in EasyEDA using LCSC components (C-parts).

I look forward to collaborating!

Nicolai Minascurta

3 0

Budget: 200 USD Deadline: 8 days

Good day! I am a mechanical design engineer in the field of electronic equipment manufacturing, with over 10 years of experience, and I have a team that I work with regularly. Thus, my team can implement this project, including the production of printed circuit boards (PCB) for assembly (PCBA), so we have the capability to design, test, and assemble a prototype for you to ensure everything works. We have over 10 years of experience in this area. If you are interested, please feel free to ask questions.