Embedded Firmware Developer: NB-IoT MQTT Data Push for Nordic nRF9151 DK

@amelectronics

I am a skilled and reliable Embedded Systems Engineer with over 6 years of hands-on experience in Arduino, ESP32/ESP8266, and microcontroller-based development. I specialize in designing efficient, stable, and scalable embedded solutions, turning ideas into fully functional hardware-software systems. I have a strong background in electronics, sensors, communication protocols (UART, I2C, SPI, MQTT, WiFi, BLE), and real-time embedded systems. My development approach focuses on clean, well-structured, and well-documented firmware, ensuring long-term reliability and easy maintenance. I also provide thorough testing, debugging, and performance optimization, including power efficiency improvements where required. I am a detail-oriented engineer with strong problem-solving skills and extensive experience in hardware debugging and firmware optimization. Beyond technical expertise, I value clear communication, meeting deadlines, and maintaining high client satisfaction. I work closely with clients to fully understand project requirements and deliver high-quality results. Pricing is flexible and can be discussed based on project scope and complexity. I am open to both short-term and long-term projects. Let’s work together to build a professional, reliable, and efficient embedded system for your needs.

@Muhammadzeesha59

Hello Sir/Mam As a seasoned Electrical and Embedded System , I believe that I can bring the virtual reality in your project , I have 100% Grip on C/Embedded , C++ , and Python , I am also well versed in ARM Cortex M3/M4 Architecture , Also have Extensive Experience with MICROCONTROLLERS , Atmega 32, STM32,Yocto ESP32 ,TM4C . I have a great Grip on ARDUINO , MATLAB , PCB LAYOUT and IOT Applications . My ability to deliver exceptional results on time and with at most quality . Please come on chat to discuss more about project. I will be waiting for your response. Thank you !

@SkillCrafts

I have extensive experience developing firmware for Nordic nRF series SoCs, including successfully implementing NB-IoT connectivity and MQTT communication for similar sensor data applications. My approach will ensure efficient, raw data transmission as you require, mirroring the results achieved in projects involving real-time sensor telemetry over cellular networks. My technical strategy involves leveraging the nRF Connect SDK, specifically utilizing the `nrf_mqtt` library for Mosquitto integration and the `LTE-M/NB-IoT` samples for modem configuration. I will focus on direct sensor readings from the onboard I2C or SPI interfaces, bypassing any complex edge processing. The firmware will be optimized for low power consumption, with configurable publish intervals managed via FreeRTOS timers. To ensure alignment, could you clarify the expected data format for the MQTT payload and what, if any, specific error handling or retry mechanisms you envision for the NB-IoT connection? I'm available for a quick call to discuss these details and outline a precise project timeline.

@sjohn117

Hi, I’m Sean, an experienced embedded firmware developer with over 10 years in the field, and I specialize in IoT solutions including NB-IoT applications. You need assistance in configuring the Nordic nRF9151 DK to efficiently publish raw sensor data over NB-IoT to a Mosquitto MQTT broker. I have worked on similar projects, successfully implementing solutions that push sensor data using Nordic’s nRF91 series and the nRF Connect SDK. My approach involves configuring the cellular modem for NB-IoT operation and developing lightweight firmware that ensures reliable MQTT communication with seamless data transmission. I prioritize clean, well-documented code and will ensure that the firmware gracefully handles network drops while reliably sending real-time sensor data. I can provide pre-compiled binaries and thorough instructions for the flashing process if preferred. The first milestone can be delivered within a week, aligning with your need for efficient implementation. Can you specify the desired data push interval for the sensor readings? Best regards, Sean

@letswork92

As an experienced embedded firmware engineer with over 12 years in the field, I understand your need for a reliable and efficient solution to read sensor data from the Nordic nRF9151 DK and publish it via NB-IoT to your Mosquitto MQTT broker. Achieving seamless connectivity and data transmission is crucial for your project’s success. I specialize in working with Nordic Semiconductor chips, particularly the nRF91 series, and have extensive experience utilizing the nRF Connect SDK (NCS) alongside Zephyr RTOS. My approach will ensure optimal modem configuration for stable NB-IoT operations while implementing a lightweight firmware that meets your specifications. I can provide you with both pre-compiled binaries along with clear instructions for flashing or guide you through the setup process live. Additionally, all source code delivered will be well-structured and commented for easy understanding. Could you please clarify if there are specific MQTT quality of service (QoS) levels you prefer for the data publishing?

@Vermapratham1234

Utilizing the Nordic nRF91 series of chips and extensive experience with the nRF Connect SDK and Zephyr RTOS, I assure you of my capability to expertly configure your nRF9151 DK to reliably publish raw temperature and humidity data over NB-IoT to your Mosquitto MQTT broker. Over my 5+ years in Electrical Engineering and Embedded Systems development, I have worked on numerous projects similar to yours, solidifying my understanding of cellular IoT networks, AT commands, and the crucial aspects of power management. These skills make me uniquely qualified for our engagement. I place a premium on clean codes and delivering well-structured documentation. My commitment is to provide you not just with a pre-compiled binary, but also detailed flashing instructions and the complete source code so you can comfortably replicate or modify software as needed in the future. Collaborating remotely shouldn't hinder efficiency, especially since communication is vital for successful deployments. With my strong track record in client engagement (having maintained positive relations with over a hundred clients), I'm confident in my ability to foster seamless collaboration with you throughout our project - providing live troubleshooting sessions should we need them or producing recorded terminal logs for validation. Let's bring life into your firmware!

@pavolsworld

nRF91 series is familiar territory, i've worked with Nordic chips and Zephyr on a few IoT builds, and the NCS MQTT client stack plus lte_lc for modem management is exactly the pattern you need here. the reconnect logic with lte_lc event callbacks and a backoff retry on the MQTT side is the part that usually needs the most care to get robust. send me the sensor part numbers so i can check the Zephyr binding, and let me know which SIM/APN you're using.

@AhmedHe22

Hello, I’m an embedded firmware engineer with hands-on experience working with Nordic Semiconductor devices, especially the nRF52 series. I’ve developed multiple IoT and sensor-based projects involving BLE communication, MQTT data transmission, I2C/TWI sensor integration, and real-time embedded firmware development. Some of my recent work includes: Developing firmware on the PAN1780 (nRF52840) platform Integrating sensors such as the MPU9250 and streaming real-time data Building IoT systems that publish sensor data to MQTT brokers Working with embedded communication, reconnect handling, and low-level drivers For your project, I can configure the nRF9151 DK for NB-IoT connectivity, develop the firmware using nRF Connect SDK / Zephyr. Additionally, I will ensure reliable real-time sensor data transmission, stable NB-IoT and MQTT connectivity with automatic reconnection handling, and deliver clean, well-structured code with clear documentation for easy deployment and future maintenance.

@mobasherreza10

Hi there, As an experienced embedded firmware engineer, I believe my skillset aligns perfectly with your **NB-IoT MQTT Data Push project for Nordic nRF9151 DK**. I have a strong background in both **Nordic Semiconductor** chips and the **nRF Connect SDK (NCS)**. Additionally, I have in-depth familiarity with the **Zephyr RTOS** and device tree concepts that will be instrumental in the successful implementation of your IoT system. My expertise isn't just limited to coding; I'm committed to delivering clean, legible source code complemented by comprehensive documentation. I've successfully developed & deployed numerous projects involving cellular IoT networks, especially NB-IoT/LTE-M. So, navigating and optimizing connections between the cellular network and MQTT broker is something I'm well-versed in.

@AlanGruiz

Im a mechatronics engineer that Worked in industrial automation developed skills over 6 years of hands-on experience on these areas: - Programming in embebed systems (Arduino, ESP32, microcontrollers) - Adquisition data from Phisical process ( Sensor, Electrónics, Power consumption) - Communication protocols (UART, I2C, MODBUS, 4-20mA) - Design and configuration for remote data (MQTT, FTP, SMS, Remote Mannagement platforms, VPN, Etc) I work with a synergistic approach that allows tasks to be simplified as much as possible