ESP32 IoT WiFi Firmware

@Mahihassi

As an accomplished Electrical Engineer with extensive experience in Firmware Development, specifically with microcontrollers and embedded systems like ESP32, I am confident that I am the best-suited freelancer for your project. My comprehensive knowledge of low power circuitry, IoT connectivity through MQTT and my proficiency with both the ESP-IDF and Arduino facilitates functional diversity in my work. Having executed numerous projects involving WiFi connectivity, I assure you that your device will not only join the predefined network smoothly but will also have fallback smart-config or captive portal options for first-time setup. Additionally, during my journey from concept to market-ready product development, I have consistently provided detailed documentation, including READMEs covering build steps and pin assignments; this will ensure hassle-free handling on macOS. Moreover, my skills extend beyond firmware development: I am proficient in PCB designing and RF hardware which is an added advantage for your project. As knowledgeable as I am about building accurate circuits as per design needs, I can test their performance beforehand to avoid future complications.

@amelectronics

Hi, I have experience developing ESP32 firmware using both Arduino and ESP-IDF, with WiFi, MQTT, REST APIs, and IoT connectivity. I can deliver clean, well-documented firmware that supports automatic WiFi connection with captive portal or SmartConfig fallback, along with a reliable REST or MQTT interface. You'll receive the complete source code, project files, README, and a short demo showing the device connecting and communicating successfully. Thank you.

@tshibsamuel477

Hi there, I read your offer carefully and understand that you need clean ESP32 firmware for reliable Wi-Fi connection, first-time setup fallback, and a simple REST or MQTT interface for data exchange. I can develop the ESP-IDF or Arduino project, implement Wi-Fi connection/reconnection logic, captive portal or smart-config setup, MQTT/REST communication, persistent credential storage, power-cycle recovery, README instructions, and a short test/demo report. My experience with ESP32 firmware, Wi-Fi connectivity, MQTT/REST APIs, IoT devices, embedded C/C++, and maintainable firmware structure fits this project well. Just send me a message and we can discuss the preferred framework and endpoint details. Best regards, Samuel Tshibangu

@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!

@deeproadrash

Hello, I have expertise in ESP32, WiFi, MQTT, REST. I'm confident to complete this task within budget & timeline. We can discuss in detail over chat/meeting.

@sayonesolutions

Thanks for posting this interesting project. I have good experiance working on similar project. Feel free to contact for further discussion.

@hayteekeys

HI, KINDLY READ THROUGH MY PROPOSAL I will deliver clean, reliable, and well-structured ESP32 firmware that powers up, connects to your predefined WiFi network (with SmartConfig or captive-portal fallback for first-time setup), and exposes a simple REST or MQTT interface for easy data push/pull ready to compile and flash from macOS. MY APPROACH ✅ Phase 1: Implement robust WiFi management (credentials storage in NVS, automatic reconnection, SmartConfig/captive portal fallback) and core connectivity logic. ✅ Phase 2: Add REST (HTTP server) or MQTT client interface, clean project structure, thorough comments, and power-cycle resilience testing. RELEVANT PROJECTS - ESP32 IoT devices with reliable WiFi + SmartConfig/captive portal, MQTT/REST interfaces, and automatic recovery after power loss (Arduino and ESP-IDF). DELIVERABLES - Complete source code and project files (Arduino or ESP-IDF — your choice) - Clear README with build/flash steps for macOS, pin notes, and WiFi credential change instructions - Short test video or screenshots showing successful connection, sample request/response, and power-cycle recovery QUESTIONS 1. Do you prefer Arduino framework or ESP-IDF? 2. REST (HTTP) or MQTT — which interface do you want as primary? 3. Any specific ESP32 board or additional sensors/pins I should account for? Ready to start immediately. Share the SSID, credentials, and endpoint details when you’re ready and I’ll deliver a working, power-cycle-proof solution.

@elect2eng

I have done this type of work of saving the wifi creds in the flash and on boot the board joins the wifi link and can push data to webserver or to mqtt server. We need to define what should be done if the wifi is missing :)

@edi45

Hi, is it just push and pull data from server with either mqtt or rest? I can probably finish this in couple hour, i have 11 years of experience in this field

@danish2051

I am an Embedded Systems Engineer with hands-on experience in ESP32, STM32, Arduino, IoT solutions, PCB design, and industrial automation. I specialize in developing complete hardware and firmware solutions from concept to production. My experience includes sensor integration, wireless communication, data logging systems, Ethernet and Wi-Fi connectivity, MQTT communication, cloud integration, and custom PCB development. My expertise includes: • ESP32 Firmware Development • STM32 Firmware Development • Arduino Projects • PCB Design using Altium Designer • IoT Solutions (Wi-Fi, BLE, Ethernet, MQTT) • AWS IoT Integration • Sensor Integration and Calibration • Data Logging Systems • Industrial Automation Projects • Embedded Linux Development • Serial Communication (UART, RS485, Modbus) • I2C, SPI, CAN Bus Development • Product Prototyping and Testing Recent project experience includes: • ESP32 Ethernet-based monitoring systems • BLE sensor networks with multiple wireless nodes • Engine dynamometer data acquisition systems • Industrial pressure, temperature, RPM, and level monitoring systems • MQTT-based cloud monitoring solutions • Custom PCB design and manufacturing support I focus on delivering reliable, well-documented, and production-ready solutions while maintaining clear communication throughout the project.

@shadabkhan92

Having worked extensively in the realms of IoT and firmware development for ESP32, I firmly believe I can bring your project to life effectively and efficiently. My credentials extend to Arduino and Electronics as well, making me adept at integrating hardware and software components seamlessly. A distinguishing quality that sets me apart is my experience with creating intelligent systems that are ready for deployment. Honing my skills across multiple platforms like React, Django, Node, and Flutter, I've managed systems that span across AWS, GCP, Azure – equipping me with the expertise to accommodate any peculiar needs of your project. Moreover, our work methodology is centered around making sure AI talks to hardware in an optimized way. This symbiosis enabled us to integrate agents into enterprise software and create intelligent predictive models that operate within existing ERP frameworks. Taking this AI-driven approach into account, envision the reliability and scalability we would bring to your WiFi Firmware Project with clean code structure, provision for different WiFi settings available at fingertip touch, comprehensive documentation inclusive of a brief README and a testing demo to ensure the system longevity. Connect with me today to discuss further how I can tailor my skills to steer your project towards success!

@ahmedgnisa

Hi there, Please check my profile, portfolio, and client reviews , I've done this exact kind of task many times before, so you're in good hands. Quick free tip: don't hardcode your wifi SSID/password. Pass the credentials over local wifi or BLE instead, much safer that way. I'll fully document everything and test it, with a screen recording sent as proof. Can deliver within hours.

@Zainrais0786

I have noticed that you need someone who can develop reliable firmware for your IoT device basee on ESP32, I can help. Hi, I am Zain. Recently I have developed a firmware for an ESP32 based product which was a Data logger device which sends data on mqtt and can store data locally in case when the device goes offline (doesnt connect to mqtt broker). The firmware was developed in ESP IDF and was version controlled on github. I believe I can handle your project too. My expertise includes • Embedded Systems / IoT • Firmware Development • C / C++ • Circuit Design • PCB Design • KiCAD / Altium • Mixed Signal PCB Designs / High Frequency PCB Designs • Simulations etc. Lets chat. Best regards

@alluankit01

Hi, I can develop clean ESP32 WiFi firmware that connects reliably to a predefined network, supports first-time setup fallback, and exposes a simple REST or MQTT interface for data exchange. The best solution is to build the firmware in ESP-IDF or Arduino based on your preference, with auto-connect on boot, saved credentials, reconnect handling, power-cycle recovery, and a clear API layer for publishing or receiving data. I’m comfortable with ESP32, WiFi provisioning, captive portal/smart-config, MQTT, REST APIs, Arduino framework, ESP-IDF, firmware debugging, macOS build setup, and clean documentation. Deliverables include: * ESP32 source code * WiFi auto-connect logic * Smart-config/captive portal fallback * REST or MQTT interface * Reconnect and power-cycle handling * Configurable SSID/endpoint settings * README with build steps * Pin/setup notes * Test screenshots or video proof I’ll focus on reliable connectivity, simple setup, and firmware that is easy to compile, flash, and maintain. Best regards Ankit

@shahzaib81829

Hi. I can develop clean, reliable ESP32 firmware using Arduino or ESP-IDF, with automatic WiFi connection, first-time setup through SmartConfig or a captive portal, and a simple REST or MQTT interface for sending and receiving data. I will provide fully commented source code, macOS-friendly build and flashing instructions, configurable network and endpoint settings, and a short test video or screenshots confirming successful connection, payload publishing, request handling, and automatic recovery after a power cycle.

@shenglin0617

Hello, This is a good match for my embedded firmware experience. I have developed ESP32 applications using both ESP-IDF and Arduino, including reliable Wi-Fi connectivity, MQTT/REST communication, automatic reconnection, and first-time network provisioning. My focus is on producing clean, modular, and well-documented code that is easy to maintain and build. The firmware will automatically reconnect after power loss, support SmartConfig or a captive portal for initial setup, and provide a simple REST or MQTT interface based on your preference. You'll receive the complete source code, project files, a concise README with macOS build instructions, and a demonstration showing successful connection and communication. I can start immediately once you provide the network and endpoint details. Best regards, ShengLin Gu.

@Webslinger01

Here's what I bring to this: → I developed the firmware for an ESP32-based cold storage monitoring system using the Matter protocol, with real-time temperature and humidity monitoring, reliable Wi-Fi connectivity, cloud integration, and instant alert notifications. The solution was designed for production deployment with stable communication and scalable IoT architecture. → I'll implement the smart-config/captive-portal fallback cleanly, so first-time setup works without you touching code, and the device just reconnects to the saved network on every boot → I'll deliver the full stack — ESP-IDF source, a README covering build steps for macOS, pin assignments, and how to change WiFi settings, plus a test video showing connect and response → I can also add a simple watchdog or boot-loop protection so the power-cycle requirement is genuinely bulletproof, not just demoed once My approach: → I'll structure the project with a WiFi manager module separate from your REST or MQTT interface, so you can extend it later without untangling my code → I'll implement the provisioning fallback, then build and test the endpoint on my own ESP32 board, including a power-cycle test → I'll hand over the source, README, and a short demo video, with everything commented for your team I'm happy to walk you through the approach and relevant past work on a chat.

@soniaer987

I really like how focused this project is — a clean ESP32 firmware that just works: boots, joins WiFi, and gives you a simple interface to push and pull data. That's exactly the kind of build I enjoy, and I've done it a few times now, so I can get you up and running quickly. Here's what I bring to this: → I've built similar ESP32 firmware for a custom air quality monitor that connected to WiFi, published MQTT payloads, and survived power cycles — exactly the behaviour you're after. → I'm comfortable in both ESP-IDF and Arduino; I'd pick Arduino for its faster iteration, but I'll match whichever framework you prefer. → I'll handle the full stack: firmware, WiFi provisioning with fallback to smart-config, and a clean REST or MQTT interface, all commented and easy to flash from macOS. → I can have a working build ready for you to test within a 4 days, with a test video showing the board connecting and responding. My approach: → First, I'll set up the project structure and implement the WiFi manager with your predefined network as the primary path and smart-config/captive portal as the fallback. → Then I'll build the REST or MQTT interface, keeping it simple and well-documented, with pin assignments and build steps in the README. For this scope, the cost would be 12500. Happy to walk you through my approach and past work on a chat.

@jb095

As an embedded systems engineer and PCB designer with a decade of robust professional experience, I have dealt with diverse IoT projects, just like the one you're proposing. With my expertise in ultra-low power design and WiFi connectivity, I’m confident that your ESP32 IoT device will reap maximum benefit from my services. Having worked extensively with STM32, ESP32 (in both Arduino and ESP-IDF frameworks), as well as MQTT communication protocol, your platform of choice won't pose a challenge. What sets me apart is my comprehensive skill set. From schematic design to PCB layout and final system testing, I bring a holistic perspective to your project. My forte lies not only in firmware development but also in RF and antenna design, which are critical factors for optimizing signal integrity in modern IoT devices. Additionally, I've proven my capability to achieve microamp current consumption for battery-operated systems, instilling high dependability in your board. Choosing me guarantees a timely delivery of clean code supported by clear documentation. I understand that you need the flexibility to compile and flash from macOS, and rest assured it won't be an issue. Your satisfaction is my top priority; my payment will only clear after the successful test execution on your hardware - connection establishment, response to sample request and smooth power cycle survival without user intervention. Ready to go all-in for your project!