Firmware for access control unit ( STM32F103)

Dear Client. I have just read your job description and your project is really interesting to me. I have many experiences working for 12+ years with Circuit design, PCB design, manufacturing functional prototyping with firmware programming and testing especially. I have developed many kinds of IOT and smart control devices in using Arduino, Raspberry pi 4, MCUs, Microcontroller. So that, your project is not problem for me. Here are some of the experiences that I built ago. - Schematic and PCB design and Layout using Altium Designer. - DDR, motor control, power converter, Keyboard, POE, UART, SPI, I2C, RF, BLE, LED lighting design. - ARM Cortex-M, DSP, MCUs(STM, Nuvoton and so on), Arduino, Raspberry pi experiences. I would be very grateful if you give me a chance to satisfy you. If you want, I can show you the products I've made until now to let you know I am the best choice. I'll do my best for you. Thank you for your time. Best regards.

Hello sir, I have 3+ years of access control system experience. I have used all kind of access controls equipments weigand, OSDP are few of them. I am also familiar with access control features such as fire alarm fail safe fail secure etc. you have mentioned STM32F103 and OTA/MQTT. both are contradictory since it requires internet which f103 doesn't have. Are you using any external module for internet connectivity? Access control projects tends to be long term. is it the case here or you only need ota support? looking forward to have a detailed discussion with you Thanks & Regards

Hi, I have over 9 years of experience in embedded design and development. I have expertise in IoT product development using different wireless technologies like Wi-Fi, Cellular, BLE , Lora, Zigbee, GPS etc. I have hands on experience of different networking protocols i.e. MQTT/S, HTTP/S, FTP, SMTP, SNMP, ICMP using cellular or WiFi. I have designed PCB using STM32F103 MCU , BG96 , Temperature/humidity sensor and battery support with charging. I have also developed firmware to fetch sensor data periodically , store them to memory and send them to AWS MQTT Cloud. I also developed OAD feature for this device. Let me know If I can help you for your project. Thanks. Jitendra

Hi, I have read the details I believe I can do this job because I am experienced with Electronics, C Programming, Microcontroller and PCB Layout. While I believe I have some queries which need to be clarified. For that I would request you to start the chat so we could clarify those. We can discuss the timeline and budget after that. You can see all my skills, experience, customer reviews and relevant jobs from my profile. My portfolio: https://www.freelancer.com/u/AITSoft Shamshad

Hi, It is possible. Kindly share your complete requirements or end goal product so we can proceed further accordingly. We are a professional team in Embedded System and we have rich experience in STM controller. We have skills in:- 1. IOT products development 2. Microcontrollers based circuit design – STM32, STM8S, Pic32 etc 3. Smart Products like Smart watch - GSM/GPRS/GPS etc 4. Wireless Products - BLE/WiFi- ESP32/ESP8266/NRF24L01 5. Low Power Battery Products design – Rechargeable and Non chargeable 6. Power Electronics – Buck, Boost, Flyback etc 7. Sim Card, GPS Tracker, Battery Backup Kindly spare some time for the interview. We will be glad to hear from you! Regards, Harjit Singh

I have 12+ years of experience in C, ,c++ and Assembly programming and have delivered multiple embedded software which includes even stm32 solutions . please ping me with more details so we can work on this.

Hi, I am a talented and trusted developer who is well versed in developing web/mobile/software apps with 6+ years of exp. After reading over your post, I think this project is perfect fit for my skill sets. I assure that I can implement this project as intended with high quality so you will get the perfection. Let's discuss more details in private chat. I am looking forward to the opportunity to work with you. Regards, Nikita Karaychev

AN EXPERT IN c programming DEAR CLIENT, After KEENLY and PREFESSIONALLY reading your description and being in position to understand CLEARLY STATED REQUIRED SKILLS and is this one of my areas of PROFESSIONAL SPECIALIZATION having the above QUALIFICATIONS, I have been an avid website content writer for various top-notch portals and have completed more than 1000 tasks related to Academic papers, business, technical, academic, commercial, fiction, Blog writing etc. I hereby humbly request you to consider my bid for QUALITY, FAST, at a FRIENDLY AMOUNT and professional work. Looking forward working with you thank you!

hello, I have seen that you need an experienced networking/microcontroller expert for . I am a professional networking/microcontroller expert with more than 10 years experience. I have carefully understood your project requirements am sure that, I can do your project in very professional way. I have some more questions ,lets discuss the details in chat box thank you

I'm an italian electronic engineer with more than 15 years of work experience. I work as HW designer; FW and SW developer. As HW designer, I work in Altium, KiCad and Orcad and I have experience in development single MCU (Microchip PIC, ARM Cortex, ESP32) boards with several digital I/O (GPIO, UART, SPI, I2C, PWM,....) and some analog I/O. I design complete board: power section, MCU section, peripheral section,.... I design also boards with battery power; so I have experience in low power PCB design. I have also experience in commercial boards (Arduino, Raspberry, Beaglebone,...) shields design. I have also experience in bluetooth (both 2.0 and 4.0) PCB design. As FW developer, usually I work in C for Eclipse + GNU ARM GCC for different ARM Cortex M0/M0+/M3/M4/M33 manufacturers (STM32Fx, NXP, EFM32/EFR32 SiLabs, Nordic nFR5x, but I'm ready to learn new frameworks). I have also good experience with ESP32 in "esp-idf" framework. I work with both single task (bare metal) and multi task environment (FreeRTOS, RTX,...). I write code for low level driver (GPIO, UART, SPI, I2C, PWM....) management, for medium level (driver for sensor, MEMS, memories, fuel gauge, display,...) and for high level/final application, for bootloader and for OTA. I work also in "C code" commercial boards Arduino/Linux embedded commercial boards (Raspberry and Beaglebone). I have also experience in bluetooth (both 2.0 and 4.0) programming. All my code is covered by unit/integration/stress tests.