You will get a robust IoT project template for Arduino AVR boards.
Rising Talent
Project details
Hello everyone!
I'd like to introduce an IoT project template for Arduino AVR boards and my services in developing smart devices based on this template.
It includes robust C/C++ firmware to quickly launch IoT projects on Arduino AVR boards with different functionality. The key features are MQTT communication and a modular firmware architecture that makes it scalable and ready for adding new functions or modifying existing ones. It is time-tested and provides support for a wide range of Arduino hardware modules, including sensors, shields, displays, and more.
The firmware has been optimized for minimal memory consumption. As a result, you can run MQTT communication even on Arduino Nano or Micro boards.
This project can be also useful if you want to add IoT functions to your existing projects(devices) based on Arduino AVR boards.
I'd like to introduce an IoT project template for Arduino AVR boards and my services in developing smart devices based on this template.
It includes robust C/C++ firmware to quickly launch IoT projects on Arduino AVR boards with different functionality. The key features are MQTT communication and a modular firmware architecture that makes it scalable and ready for adding new functions or modifying existing ones. It is time-tested and provides support for a wide range of Arduino hardware modules, including sensors, shields, displays, and more.
The firmware has been optimized for minimal memory consumption. As a result, you can run MQTT communication even on Arduino Nano or Micro boards.
This project can be also useful if you want to add IoT functions to your existing projects(devices) based on Arduino AVR boards.
Project Type
Development, ITWhat's included
| Service Tiers |
Starter
$149
|
Standard
$499
|
Advanced
$999
|
|---|---|---|---|
| Delivery Time | 3 days | 7 days | 15 days |
Number of Revisions | 1 | 3 | 9 |
Optional add-ons
You can add these on the next page.
Additional Revision
+$100Frequently asked questions
9 reviews
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ND
Nicolas D.
Mar 14, 2026
STM32 firmware development
Mykola is a specialist in embedded firmware development, exceptional quality.
ND
Nicolas D.
Mar 14, 2026
Embedded webpage development
Mykola is an expert in his field, professional and very knowledgable, i definitely recommand him for aany embedded project.
ND
Nicolas D.
Dec 8, 2023
Embedded HMI webserver
Mykola Nazarko, Interfacer is a extremely professional expert in the field of firmware development with really good communication and support, I would definitely recommand his services !
ND
Nicolas D.
Jan 19, 2022
Firmware development for a modbus TCP Slave device using a STM32 microcontroller and FreeRTOS
Mykola is a very skilled and reliable freelancer, great job! Would definitely recommand for any programming project.
bh
bezalel h.
May 20, 2020
ESP8266 Arduino Sketch light sleep
Thanks!
About Mykola
Embedded Developer, Firmware, IoT, MQTT, OTA, BLE, RTOS, STM32, ESP32
100%
Job Success
Chornomors'k, Ukraine - 3:25 pm local time
I specialize in low-level programming, real-time architectures, and secure communication protocols across diverse hardware platforms. Passionate about building embedded systems from scratch -integrating low-level drivers, designing scalable architectures, and crafting intuitive device logic with user interaction in mind. I enjoy working across the entire stack, ensuring that each layer - from hardware abstraction to application behavior - is thoughtfully designed, efficient, and reliable, even in resource-constrained environments.
Strong communicator with experience leading small development teams and collaborating with clients, committed to supporting products through their full lifecycle - from development to long-term maintenance and improvement.
🤝 I’m ready to help bring your idea to life. Feel free to reach out anytime.
🛠️ Technical Skills
Programming languages & IDEs:
- Embedded C/C++ - primary language for firmware development
- Python - used for utilities, scripting, and support tools
- IDE - VS Code, IAR Embedded Workbench, STM32CubeIDE, System
Workbench, Eclipse
Microcontrollers & SDK:
- STM32 (F1x, F2x, F4x, H7), STM8, ESP32, ESP8266, nRF52, AVR
- STM32-HAL, STM-SPL, ESP-IDF, nRF SDK
RTOS
- FreeRTOS
Connectivity & Communication
- Wi-Fi, Ethernet, BLE
- TCP/IP (LwIP), MQTT, HTTP/HTTPS, SNMP, FTP, SMTP, SNTP, WebSocket, Modbus
- UART, SPI, I2C, RS232, RS485, 1-Wire, CAN, MDB, USB
Cryptography & Security
- MbedTLS
- Symmetric encryption algorithms: AES
- Asymmetric encryption algorithms: RSA, ECC
- Digital signature algorithms: ECDSA
- TLS/SSL communication, including client- and server-side handshake flows
- Applied cryptographic techniques in bootloaders, firmware protection, and OTA update mechanisms
File Systems & Storage
- FatFs, LittleFS
- Accessed and managed EEPROM and FLASH memory across various platforms
- Applied storage techniques in bootloaders, data logging, and firmware update systems
GUI Development:
- Develop embedded web interfaces for fast, user-friendly device setup and management
- TouchGFX - creating GUI for TFT & LCDs
- Develop custom framebuffer algorithms optimized for TFT & LCD operation in low-resource embedded systems
Bootloader & Firmware Updates
- Develop custom bootloaders for STM32
- Design secure firmware update mechanisms with encrypted and signed packages
- Implement OTA updates over Wi-Fi and Ethernet
- Work with dual-bank architectures, rollback logic, and update validation
- Integrate version control, update file formats, and fail-safe recovery paths
- Apply digital signatures and hash verification to ensure firmware integrity
Compliance & Certification
- Experienced in ensuring Radio Equipment Directive (2014/53/EU) compliance for embedded devices, including meeting regulatory requirements and preparing the necessary technical documentation
Other Tools & Practices
- Version Control: Experienced in Git for source code management and collaborative development
- Hardware Interaction: Skilled in reading schematics and performing soldering tasks, including surface-mount (SMD) components
- Diagnostics & Debugging: Skilled in using logic analyzers and oscilloscopes for signal analysis and troubleshooting embedded systems
- Arduino
- PlatformIO
Steps for completing your project
After purchasing the project, send requirements so Mykola can start the project.
Delivery time starts when Mykola receives requirements from you.
Mykola works on your project following the steps below.
Revisions may occur after the delivery date.
Project analysis.
I will analyze your project description. I will ask a question if have any. I can also propose an optimization of your project to make it more robust or save time and money for its realization.
Development
I will write and configure firmware modules to realize project functionality.