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I will program esp32 firmware in embedded c using freertos and mqtt
Computer Engineer, Full Stack Developer, Embedded Systems, IoT Specialist
I am a Computer Engineer driven by the challenge of building systems that live at the intersection of software architecture and hardware integration. With a technical foundation spanning Full Stack We...
About this Gig
Are you looking to turn your hardware prototype into a rock solid, production ready device without running into timing glitches or memory leaks?
I specialize in embedded systems engineering, microcontroller firmware, and IoT development using C and C++. Whether you are building on an ESP32, Arduino, or STM32, I write clean, well structured code that makes your hardware run reliably under real world conditions.
What I can build and optimize for you: Bare metal firmware and custom peripheral drivers Multitasking architectures and task scheduling using FreeRTOS Sensor integration across I2C, SPI, UART, ADC, and GPIO pins Wireless communication with WiFi, Bluetooth Low Energy (BLE), and ESP NOW IoT telemetry pipelines streaming live data via MQTT or WebSockets Hardware debugging, logic troubleshooting, and pinout documentation
Hardware & Tools: ESP32 (WROOM, WROVER), Arduino, STM32, Espressif IDF, PlatformIO, VS Code, and C and C++ toolchains.
Every delivery includes well commented code and clear wiring guides so you can wire up and test your system with zero confusion.
Feel free to send me a message with your hardware list and project goals before ordering :)
My Portfolio
FAQ
How do you test the firmware if you do not have my exact physical hardware setup?
I keep a wide inventory of ESP32 development boards, common sensors, displays, and communication modules on my workbench for handson verification. For custom or proprietary hardware, I write modular drivers, test logic using hardware simulators like Wokwi, and provide step by step debugging logs.
Will you provide a wiring diagram or pinout guide?
Yes. Every project includes a detailed pinout mapping table and connection diagram showing exactly which microcontroller GPIOs connect to each sensor, power rail, and communication line.
Which development frameworks and toolchains do you use?
I work extensively with Espressif IDF (ESP-IDF), PlatformIO, and the Arduino C/C++ framework in VS Code. If you have an existing codebase or specific toolchain preference, I can integrate directly into your setup.
Can you implement realtime multitasking with FreeRTOS?
Yes. I structure complex firmware using FreeRTOS tasks, message queues, semaphores, and event groups. This ensures non-blocking execution, precise sensor sampling, and uninterrupted wireless communication.
Can you stream sensor data to a custom web app or IoT platform?
Yes. I configure ESP32 systems to transmit telemetry data securely over WiFi or BLE using protocols like MQTT (AWS IoT, Adafruit IO, HiveMQ, EMQX), WebSockets for live streaming, or HTTP REST APIs.
What if I run into an issue when uploading or testing the code on my board?
I provide post delivery support to help you flash the firmware, verify serial monitor outputs, and troubleshoot any circuit or communication issues that arise during testing.
