4.5 Digit Micro Ohm Meter PCB Design (Arduino + Nextion + Modbus)

@mairajali11

As a seasoned Electrical/Electronics Engineer and Verified PCB Designer, I have over 8 years of experience crafting superior circuit boards. I’m incredibly skilled with a breadth of software such as Eagle, Altium, KiCAD, and EasyEDA among others. Moreover, as a Certified EasyEDA designer, I am equipped to handle intricate project requirements far beyond the complex demands of your 4.5 Digit Micro Ohm Meter. My proficiency extends from PCB Design and Prototyping to MATLAB/SIMULINK & Python programming, Embedded System design (including Arduino) and Xilinx FPGA Development just to name a few. These skills align hand-in-hand with your requested tasks such as creating Gerber files, Modbus register map, and Arduino code; ensuring that I’ll be able to cater for all your needs. My ultimate goal is not just meeting the project requirements but also delivering high-quality results within your timeframe and budgetary constrains. As a Preferred Freelancer, known to rank among the top 1% of professionals here on this platform, you can rely on my proven commitment to excellence for this project. I'm eagerly looking forward to discussing all the specifics of this intriguing task further with you. I remain available 24/7 and can assure you unwavering dedication towards transforming your ideas into reality through this endeavor.

@macroenergy

As someone with extensive experience in PCB design and layout, I believe my skill set aligns perfectly with what you're looking for in this Micro Ohm Meter project. Digital Motor Control is a significant part of my background, and I have a strong understanding of MPLAB X IDE as well as interface with Nextion HMI. Working on Analog designs and implementing low-power distribution systems, especially noiseless special op-amp based analog circuits, also fits seamlessly with this project's requirements. My knowledge extends to not just the hardware but also the software side and includes being proficient in Arduino, which would be central to this project. Additionally, I'm comfortable with Modbus RTU communication and have experience developing and documenting such protocols. Moreover, I have proven my abilities in stable, low-noise designs for power electronics products like converters, inverters as well as renewable energy systems. These experiences make me aware of design considerations related to interference and minimizing noise - factors that will contribute positively to the accuracy target of ±0.03% wconverted via 4-wire Kelvin measurement system in your Micro Ohm Meter. Finally, efficient project management is at the core of my work ethic

@engrhasan01

I’m an Electrical and PCB Design Engineer with 5+ years of experience in precision measurement systems, low-noise analog design, and Arduino-based embedded solutions. I can design your 4.5-digit Micro Ohm Meter with true 4-wire Kelvin measurement, ensuring high accuracy and stable performance across all specified ranges. I will develop a low-noise current source + precision sensing front-end, carefully handling offset, thermal drift, and noise to meet your ±0.03% ± 4 digit accuracy target. The design will include proper range switching, shielding, and filtering for reliable µΩ-level measurements. Scope & Deliverables: Complete schematic + PCB design (manufacturing-ready Gerbers) Optimized analog front-end + Kelvin sensing layout Arduino firmware with range control, trigger/pulse modes, and button interface Nextion HMI variable mapping (display-only integration) Modbus RTU communication + register map Full BOM + calibration guidance (including internal trim adjustment) The system will be structured for clean measurement, fast response, and easy calibration, with stable readings even at very low levels.I can start immediately and deliver a reliable prototype-ready design within your timeline.

@soniaer987

I can design a 4.5-digit Micro Ohm Meter with accurate 4-wire Kelvin measurement, stable current sourcing, and clean Arduino integration. Approach: • Precision constant current source (multi-range switching via relays/MOSFETs) • Low-noise instrumentation amplifier + high-resolution ADC (16–24 bit) • Proper Kelvin routing, guarding, and analog/digital ground separation • Range auto/manual control via buttons + stable filtering • Nextion display mapping (value, range, status variables) • Modbus RTU implementation with structured register map • Calibration via internal trim + software correction Deliverables: ✔ Schematic + PCB (Gerber + source) ✔ Complete BOM (precision components selected) ✔ Arduino firmware (measurement + UI + Modbus) ✔ HMI variable mapping ✔ Calibration guide Ready to build a high-accuracy, low-noise, production-ready design.

@uzairelectronics

Hello, I can design a **4.5 digit Micro Ohm Meter** using an **Arduino-based PCB with 4-wire Kelvin measurement** for high accuracy and stable low-noise performance. The system will support all specified current ranges (10A to 0.1mA) and achieve the target accuracy of **±0.03% ±4 digit**. The design will include a **precision current source, instrumentation amplifier, and high-resolution ADC** for micro-ohm measurements. The **Nextion HMI** will be used as a display only to show measured value, range, and system status. Six manual buttons will control range selection, trigger, pulse, save/recall, and test functions. The device will also support **Modbus RTU communication via RS-485**. Deliverables include **schematic, PCB layout (Gerber + source), BOM, Arduino firmware, Modbus register map, and calibration guidance**. I focus on **stable analog design, low-noise PCB layout, and reliable measurement accuracy** for precision instruments. Best regards

@ostronik

Hi Greetings from OSTronik India! We are a technology-driven company specializing in Power Electronics and Embedded System Design integrated with Artificial Intelligence (AI), delivering reliable, industrial-grade Electronic Solutions—from concept to mass production, all under one roof. Our in-house capabilities include R&D, Firmware Development (C & Python Programming), Hardware Design, Prototyping, and Scalable Mass Production with a focus on quality and cost efficiency. Core Expertise: • Microcontroller : PIC, STM32, ESP Family, AVR, Nuvoton, XBee. • Microprocessors: Raspberry Pi • Development Tools: MPLAB X IDE, Keil, STM32CubeIDE, Arduino IDE, Atmel Studio, VS Code. • Hardware Design: Industrial-grade multilayer PCBs using Altium Designer, KiCad, with efficient power design, isolation handling, and EMI/EMC compliance. • Communication Protocols: UART, SPI, I²C, CAN, Modbus, MQTT, LAN, S-Bus, RS-485, RS-232. • RF Modules: LoRa, nRF Series, XBee, Laird RF Modules. Project Capabilities: Power Monitoring & Energy Management Units, CNC Controllers, BLDC/DC Motor Control, IoT-based Agriculture, Smart Home & Industrial Automation, Inverters, Stabilizers, and Gimbal-based Videography Control Systems. We have already transformed the concept into a successful Electronic solution for multiple clients. To help you better visualise our expertise, we would be glad to share a brief reference video. Let’s schedule a meeting to discuss further. Best Regards, Team OSTronik India