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I'm looking for an experienced firmware developer to work on an ESP32 microcontroller. The project involves integrating Wi-Fi connectivity and sensor integration for electricity monitoring. Key Requirements: - Develop firmware for ESP32 - Implement Wi-Fi connectivity - Integrate various sensors for monitoring electricity usage - Ensure reliable data transmission and system performance Ideal Skills and Experience: - Proficiency in ESP32 and related development environments - Strong background in firmware development - Experience with Wi-Fi protocols and sensor integration - Knowledge of electricity monitoring systems Please provide relevant work experience and approach to the project.
Project ID: 40493852
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39 freelancers are bidding on average ₹26,204 INR for this job

As an Electrical Engineer and Firmware Developer with a speciality in embedded systems, I have extensive experience working with microcontrollers and specifically the ESP32 that your project demands. My proficiency extends beyond pure software, with PCB design skills that will ensure maximum efficiency for your complex electricity monitoring system. Additionally, my understanding of RF hardware will further optimize the Wi-Fi connectivity integration, ensuring reliable data transmission. Moreover, my experience in developing IoT products aligns perfectly with your project. I am well-versed in incorporating various sensors for data monitoring and extraction which will be essential for accurate electricity usage observations.I work diligently from idea-to-market ready product resulting in an efficient,intelligent embedded solution that combines hardware, software and intelligent connectivity.
₹25,000 INR in 7 days
8.3
8.3

I am a professional Electrical Engineer and PCB Designer with over 7 years of experience in schematic design, PCB layout, and embedded systems (ESP32, IoT, analog/digital circuits). I am also an experienced Embedded Systems Engineer with 7+ years in Arduino, ESP32/ESP8266, and microcontroller-based development. I turn ideas into fully functional hardware-software systems. I have carefully reviewed your project requirements and I am confident I can provide a high-quality solution tailored to your needs. My expertise includes: RFID (HF, UHF, NFC, Active/Passive) Embedded Firmware Development Hardware & PCB Design (industry standards) Sensor Integration & IoT Development Protocols: UART, I2C, SPI, MQTT, WiFi, BLE BOM, Gerber, Design Optimization Prototyping, Testing, Debugging, Power Optimization I focus on clear communication, timely delivery, and customer satisfaction. My designs are fabrication-ready, tested, and built for long-term reliability. I have designed similar products for other projects. I am happy to discuss your project in detail and provide revisions until you are satisfied. Looking forward to working with you.
₹15,000 INR in 7 days
7.5
7.5

Hi there, I’ve carefully read your project description, and I can help develop reliable ESP32 firmware for Wi-Fi connectivity, sensor integration, electricity monitoring, and stable data transmission. I’m Samuel Tshibangu, a mechatronics engineer with hands-on experience in ESP32 firmware, Wi-Fi communication, sensor interfacing, embedded C/C++, and power/electricity monitoring systems. I’ve already worked with ESP32, Wi-Fi protocols, ADC/current/voltage sensors, and real-time monitoring dashboards, so I can move quickly and deliver clean, well-structured firmware. Feel free to send me the sensor details and communication requirements, and I can start right away. Best regards, Samuel Tshibangu
₹25,000 INR in 1 day
6.4
6.4

HI, KINDLY READ THROUGH MY PROPOSAL I will develop reliable, production-ready firmware for your ESP32-based electricity monitoring device, including stable Wi-Fi connectivity, sensor integration, and efficient data transmission. MY APPROACH ✅ Phase 1: Review requirements and design firmware architecture (ESP-IDF preferred). ✅ Phase 2: Implement Wi-Fi (station/AP mode with reconnection logic), sensor reading (voltage/current/power), and data processing. ✅ Phase 3: Add reliable transmission (MQTT/HTTP), error handling, OTA updates, and low-power optimization. ✅ Phase 4: Testing, documentation, and handover. RELEVANT PROJECTS • Multiple ESP32 electricity monitoring systems (CT sensors, voltage dividers, power calculation, Wi-Fi data logging to cloud/local server). • IoT energy meters with real-time monitoring and stable wireless connectivity. DELIVERABLES • Complete, well-commented ESP-IDF / Arduino source code • Configuration and calibration guide • Data transmission & error handling documentation QUESTIONS 1. Which development environment do you prefer (ESP-IDF or Arduino)? 2. What sensors are you using (CT, voltage divider, PZEM, etc.)? 3. Target data transmission method (MQTT, HTTP, TCP, etc.)? Ready to start immediately.
₹25,000 INR in 5 days
6.6
6.6

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!
₹37,500 INR in 7 days
5.8
5.8

As an experienced firmware developer, I am confident in my abilities to excel on your ESP32 Firmware Development project. My previous work with IoT hardware and firmware development on ESP32 and STM32 platforms is a testament to my proficiency in this domain. I have a sound knowledge of Wi-Fi protocols and sensors, which coupled with my understanding of electricity monitoring systems makes me a well-rounded candidate for this job. What sets my team apart is our comprehensive approach to projects. We don't just develop prototypes; we create production-ready infrastructure that works efficiently under real-world conditions. Additionally, we specialize in integrating cutting-edge AI systems with existing workflows, which can add significant value to your electricity monitoring system. Our hardware experience includes PCB design and MQTT-connected sensor networks, ensuring that data transmission within the system is both reliable and robust. Given your project requires an amalgamation of AI aspects, embedded systems, and electrical engineering, this happens to be our area of expertise! Partnering with us would mean leveraging skills rooted deeply in Arduino, C programming and Microcontrollers – all crucial for the successful execution of your project
₹37,500 INR in 7 days
5.4
5.4

hi, I have done esp32 based switch control, remote data base update, MQTT based controls etc. Let us discuss. Do you have the circuit and board ready or do you need to discuss with me for the same?
₹15,000 INR in 15 days
5.4
5.4

Hello. I am very interested in helping you with your electricity monitoring project. With my background in low-level systems and embedded development, I am comfortable working with microcontrollers to handle sensor data acquisition and reliable connectivity. I focus on creating stable, efficient firmware and would be happy to discuss the specific sensors you are using and your requirements for data transmission to ensure the system meets your needs.
₹25,000 INR in 3 days
5.3
5.3

I’ve been building production ESP32 firmware for over a decade, and your project is exactly the kind of work I do best. I’ve delivered everything from multi-sensor telemetry pipelines to precision servo controllers with custom PCBs and Wi-Fi APIs. One recent project was a model railway controller where I designed the board, wrote the firmware, and built the Node.js control layer — all in under three weeks. That’s the pace and quality I bring to every engagement. If you need reliable firmware that handles the edge cases and ships on time, let’s talk specifics. I’m ready to start.
₹25,000 INR in 2 days
3.3
3.3

Hi, I’m an experienced ESP32 firmware developer with strong skills in Wi-Fi connectivity, sensor integration, and electricity monitoring systems. I can develop reliable firmware, integrate the required sensors, and ensure stable data transmission and performance. You can see a few of the samples in my portfolio.
₹12,500 INR in 3 days
3.2
3.2

Greetings! I will deliver a high-quality, robust firmware solution for your ESP32 electricity monitoring project. You will also get FREE technical support after delivery. With over four years of professional corporate experience in C++ and embedded systems, I have successfully developed complex ESP32 projects using the ESP-IDF environment. My expertise includes implementing secure Wi-Fi connectivity, robust OTA pipelines, and integrating precise sensors for reliable data transmission and system performance. I am aim to building long term relationships with my clients Best regards,
₹18,000 INR in 21 days
2.9
2.9

Hi, I can help develop reliable ESP32 firmware for electricity monitoring with Wi-Fi connectivity, sensor integration, and stable data transmission. I have experience working with ESP32-based monitoring and IoT projects involving real-time sensor data acquisition, MQTT/Wi-Fi communication, data logging, and dashboard integration. My focus is on creating clean, well-structured firmware that is easy to maintain and scale. I can assist with: • ESP32 firmware development • Wi-Fi communication and data transmission • Sensor integration for voltage, current, power, and energy monitoring • MQTT/HTTP/Blynk/Custom server communication • Data logging and performance optimization • Testing and debugging Estimated Timeline: 7–10 days Budget: ₹18,000 A few questions: 1. Which energy monitoring sensors/ICs are being used (PZEM, ATM90E32, ADE775x, CT sensors, etc.)? 2. Do you need MQTT, HTTP API, or cloud integration? 3. Is there an existing PCB/hardware available? 4. Do you require OTA firmware updates? I would be happy to discuss the hardware and expected workflow in more detail. Thanks, Chetan
₹18,000 INR in 8 days
1.6
1.6

Hi, I'm a firmware developer with hands-on experience building ESP32-based IoT systems, including Wi-Fi connectivity and sensor integration for real-time monitoring — which lines up directly with your electricity monitoring project. My approach: - Develop the firmware in C/C++ using ESP-IDF or the Arduino framework (your preference) - Implement stable Wi-Fi connectivity with auto-reconnect and error handling for uninterrupted operation - Integrate current/voltage sensors (e.g. PZEM-004T, ACS712, or your chosen modules) for accurate usage tracking - Ensure reliable data transmission via MQTT or HTTP to your server/dashboard, with buffering so no data is lost on connection drops I write clean, well-documented code and test thoroughly for continuous-operation reliability. I'd love to know which sensors you're planning to use so I can confirm the exact integration plan. Happy to share relevant past work. Looking forward to discussing the details. Thanks!
₹25,000 INR in 7 days
1.6
1.6

Hello, I am an Embedded Systems Engineer with experience in ESP32 firmware development, sensor integration, and wireless communication. I can develop reliable firmware for your ESP32-based electricity monitoring system, integrate the required sensors, implement stable Wi-Fi connectivity, and ensure accurate data collection and transmission. My background includes working with embedded systems, communication protocols such as UART, I2C, SPI, BLE, and Wi-Fi, along with debugging and performance optimization. I am confident in delivering a robust and efficient solution and would be glad to discuss your project requirements in detail.
₹18,000 INR in 7 days
1.4
1.4

Full-Stack Developer and DevOps Engineer, I am confident in my ability to tackle your ESP32 Firmware project. My skill set might differ slightly from the specific demands of the job, but that distinction bolsters my unique capabilities. Rather than merely focusing on firmware development, I can ensure that the firmware we create integrates smoothly with other aspects of your system, such as Wi-Fi connectivity, sensor integration and electricity monitoring. I don't see challenges; I see opportunities to broaden my skills and deepen my expertise. I am experienced in developing firmware, knowledgeable in WiFi protocols and adept at integrating various sensors for monitoring purposes. My FPGA programming background and high-level training with microcontrollers also distinguish me. With your detailed project description as my guide and your inputs, we can collaboratively create a cutting-edge solution - one that delivers reliable data transmission, optimal system performance while ensuring electricity monitoring excellence. But more than that, I bring a passion for clean coding practices and rock-solid infrastructure delivering beyond expectation. Let's leverage this opportunity to create something transformative!
₹20,000 INR in 10 days
0.6
0.6

Most developers struggle with two things in this project: Noise interference in sensitive current measurements and Wi-Fi connection dropouts during long-term monitoring. I solve both through robust architectural design. My Approach: Measurement Accuracy: I will implement high-precision sensing logic (e.g., using PZEM-004T over Modbus/UART or SCT-013 with an ADS1115 ADC for higher resolution) to ensure your electricity usage data is accurate and shielded from harmonic noise. Network Resilience: I will implement a 'Watchdog' mechanism and non-blocking Wi-Fi management. If the connection drops, the ESP32 will auto-reconnect without resetting the whole system, ensuring no data loss during monitoring. Data Transmission: I will structure the firmware to transmit data via MQTT or a JSON-based REST API, which is lightweight and reliable for IoT monitoring. What I will deliver: Clean, modular C++ ESP32 firmware (PlatformIO/Arduino IDE). Complete wiring schematic for sensor interfacing. Data logging reliability test (showing uptime and reconnection behavior).
₹25,000 INR in 7 days
0.8
0.8

Hi! ESP32 firmware for electricity monitoring needs careful attention to sensor accuracy, Wi-Fi stability, and reliable data transmission — a poorly written interrupt or sampling loop will give you noise in your readings, not real consumption data. Here's how we'd approach this: → ESP32 firmware in C/C++ (Arduino framework or ESP-IDF, whichever fits your hardware setup) → Wi-Fi connectivity — stable connection with reconnect logic and OTA-friendly architecture so you can push firmware updates remotely → Sensor integration — current transformers (CT), voltage sensing, or dedicated ICs like PZEM-004T depending on your hardware; calibrated sampling for accurate kWh readings → Data transmission — structured payload (JSON/MQTT or HTTP POST) to your backend or cloud endpoint, with local buffering if Wi-Fi drops → Reliable performance — watchdog timer, power-safe design, and tested under continuous load before handover We work in C/C++ across embedded and backend systems — same discipline around clean, maintainable code and tested under real scenarios. I will personally validate sensor readings against a reference meter before delivery. Quick question: do you have a specific sensor module already selected (CT clamp, PZEM, shunt-based), or is hardware selection still open?
₹14,000 INR in 7 days
0.0
0.0

As an experienced firmware developer who specializes in a range of cutting-edge technologies, including the ESP32 microcontroller, I bring to the table a wealth of expertise that uniquely qualifies me for this project. My background with Wi-Fi protocols and sensor integration aligns seamlessly with your project's needs. Additionally, my firm, Mitraa Technology, prides itself on delivering end-to-end technology solutions just like the one you're seeking. One of our strongest suits is our deep-rooted understanding of how to create firmware that optimizes performance without sacrificing reliability. We know that when it comes to electricity monitoring, accuracy matters – and so does the speed at which you can access that data. To ensure this, I guarantee seamless integration of sensors to accurately gather electricity consumption data while implementing a robust Wi-Fi connectivity solution for quick, hassle-free transmission. Finally, as a freelancer who prioritizes consistent communication and adheres to agile methodologies, rest assured that I will keep you up-to-date on every step of the development process. With a project as vital as electricity monitoring, not only will my skills be put to use but also my drive to form long-lasting client relationships. Let's join forces and create a reliable and efficient ESP32 firmware together.
₹18,500 INR in 7 days
0.0
0.0

Hi! I noticed that the biggest challenge in this project is likely not the development itself, but ensuring the solution remains scalable, maintainable, and aligned with your business requirements as it evolves. My approach would be to first understand the data flow, user workflows, and long-term objectives before making implementation decisions. This helps avoid building something that works today but becomes difficult to extend tomorrow. I can assist with: • Architecture planning and technical design • Web and mobile application development • API integrations and backend systems • AI-powered applications and automation • ERP/SAP integrations and business process workflows • Custom SaaS platform development One advantage I bring is access to a broader technical delivery network through my BPO operations. If additional frontend, backend, AI, DevOps, QA, UI/UX, or support resources become necessary, I can coordinate those capabilities while maintaining a single point of contact and consistent project oversight. One question: what would you consider the most important measure of success for this project six months after launch? Even if we do not end up working together, you will still leave with a free consultation and clearer direction for the project architecture and implementation strategy. Regards, Alex
₹18,750 INR in 7 days
0.0
0.0

Hello, I am an Embedded Systems and IoT Developer with hands-on experience in ESP32, STM32, sensor integration, Wi-Fi communication, and real-time monitoring systems. I have developed multiple IoT projects involving data acquisition, cloud connectivity, and wireless monitoring. For your electricity monitoring project, I can develop robust ESP32 firmware that integrates the required sensors, processes electrical parameters accurately, and transmits data reliably over Wi-Fi. I have experience working with ADC, I2C, SPI, UART, MQTT, HTTP, and TCP/IP protocols, ensuring stable communication and system performance. My approach includes: • ESP32 firmware development • Sensor integration and calibration • Reliable Wi-Fi communication • Real-time data transmission • Error handling and automatic reconnection • Performance optimization and testing I focus on clean, maintainable code and thorough testing to ensure long-term reliability. Based on the project requirements, I can deliver a scalable solution with proper documentation and deployment support. I would be happy to discuss the hardware details, sensor specifications, and project timeline further. Looking forward to working with you. Best Regards, G. Vinith Embedded Systems & IoT Developer
₹12,500 INR in 3 days
0.0
0.0

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