Write some Software

Budget $30 - $250 USD
Bids 14
Average Bid $238
OPEN Ending in 1 day

I got a complete software made by a developer. There is a STM32 microcontroller and SIM900 with GPRS/GSM/email etc

For some reason, the inserted sim card establishes connection and rings normally when i call,

but when i send AT COM i do not get replies.

I need an expert someone to solve the problem.

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Bids on this Project

  • PavelShilin Profile Picture


    Saint-Peterburg,  Russian Federation

    Hello. My name is Pavel. I live, work and study in Saint-Peterburg, Russia. I’m a postgraduate student of the third year of study at the St. Petersburg State University of Telecommunications. By nature I’m a punctual, organized, ambitious and cheerful young man, always open to new ideas and people. I have active life position, repeatedly i was a member of various Russian and international conferences in the field of information and telecommunication technologies. There are also publishing my research papers in various Russian and international journals. Is a Fellow of the program “UMNIK” Related work “Hardware-software system to ensure the safe drive of vehicles.” I started to develop devices based on microcontrollers since 2005 in school. I develop devices for collecting, storing, processing, communication and applied in the field of monitoring and protection facilities management, telecommunications. Also i develop circuit design device, PCB design and write software.

  • arunjoec Profile Picture


    KOZHIKODE,  India

    I'm an experienced graduate with excellent skills on Embedded Systems ,CAD,Video Editing and creative writing, articles etc. You can hire me in a considerable rate.

  • logindtechnology Profile Picture


    Chennai,  India

    # Having 17+ years of experience in Design, Development and Project Management of Embedded System software & Industrial Automation software. # Experience in developing embedded software for MPC 5200(Power PC) & ARM (Cortex M3) architectures and TMS 320C6205 Digital Signal Processor, 8051, Atmel 8535 Micro controllers & PIC controllers. # Experience in developing Embedded Software using RTOS. # Device Driver for I2C, SPI, RS232, RS485, EEPROM, LCD, RTC, FLASH, FPGA, UART, SDRAM, ADC, DAC, ENCODER # Experience in various development tools like TI Code Composer Studio, AVR Studio IDE, Multi IDE, MPLAB IDE, IAR Workbench. # Hands on experience in development of Industrial Automation software using different PLCs and HMI. # Experience in configuration management tools like PVCS, SVN, CVS # Hands on experience in Project Management

  • ob100 Profile Picture


    o,  Ukraine

    - Extensive knowledge of industrial automation, embedded systems and networking technologies fields; - More than 8 years of firmware development for embedded systems; - More than 4 years in industrial automation development;

  • ahmad5857 Profile Picture


    Lahore,  Pakistan

    I have experienced to develop all kind of electronics, programming, networking and telecommunication projects. I have delivered engineering support to automation, embedded and electronic industries and helped them to go through various challenges.

  • blackwind97 Profile Picture


    Kota,  India

    Writing Embedded Firmware`s & software for various family of micro controller`s,circuit and PCB designing ,specialized skills in designing wireless embedded system using standard proprietary protocols on 2.4 GHz based RF SoCs,Zigbee,Embedded Linux,Linux device driver,Socket programming,Z-stack,Hardware descriptive Languages (Verilog and VHDL),FPGA.

  • CoherentTech123 Profile Picture


    Lahore,  Pakistan

    We are a startup with core business in electronics, embedded systems, Programming and prototype development. We offer a range of services from product Concept, Design, Engineering, Production and field testing. Our area of expertise include Smart Grid technologies, Automotive, Telecommunication, Medical and Military. Our experts have hands on working experience with 8-bit, 16-bit and 32-bit architectures. We have development tools for almost all families of Microprocessors. Some of our projects include smart meters, communication modules, medical / nursing assistance boards, G-code readers for CNC machines, Zigbee enabled PDT, RFID tracking devices, GSM/GPRS based IoT and alot more. We also offer Verilog and VHDL design services for digital system/ASIC design. We have a cumulative experience of more than 50 years in the field of embedded systems & product design. We are committed to provide quality services for your design needs at competitive price with intime delivery

  • mechatronicsengr Profile Picture


    Islamabad,  Pakistan

    I am Embedded System Design and Development Engineer. I have expertise in Microcontroller Programming and development on AVR (ATmega and ATtiny), Arduino and ARM (Cortex M0 and Cortex M4) in C/C++/Assembly Language. I have done - Control of DC motor, Display on LCD and input from Hexpad - RFID Based Factory Automation and Remote Inventory Management. - RFID Based Loyal Card for Loyal Customers. - Bluetooth Communication between MCU and RFID Host. - Vehicle Tracking using GPS and Accelerometer. and a lot more. I have expertise over all communication protocols of Microcontroller: - SPI (Master/Slave) - UART - USART - I2C (Master/Slave). - Ethernet - Wifi - Bluetooth etc.. I am expert in interfacing sensor modules with microcontroller. I believe in providing superb quality provided that the deadlines are met. Moreover, during the course of my project I would keep you updated regarding the status. Service Description: * Wireless Interfaces (ISM Band FSK, OOK, XBee, ZigBee, TI 2.4GHz, Bluetooth, WiFi, etc) * LED lighting control * DC Motor Control and Actuator Control Solutions * Touch Sense * RF Energy Detection Systems * Home Automation systems * Weather Stations (Temperature, Pressure, Humidity, Wind Speed, Positioning, and Ambient Light sensing) * GPS Tracking Systems * USB Based Embedded Products * Power Over Ethernet (POE) Solution * On Board / off board DC/DC Low quiescent current, Linear and Switch Mode Power Supply solutions for embedded applications ----------------------------------------------------- * PCB Design (Printed Circuit Board) * Schematics and Bill of Material * Block Diagram and Design Documentation * Suggesting you PCB and PCBA vendors or managing the PCB and PCBA process. * Part Selection, Parts Sourcing * Manufacturing File generation * High Speed, High Density Multi-Layer PCB Layout * Embedded Software / Firmware design development * 3D Step Models of the PCB for Integration with MCAD tools. * Board Bring-up: Test codes in C/C++. * DSP Design (Digital Signal Processing) * Power / Signal Integrity Analysis * System / Hardware Design -------------------------------- * Circuit Simulation Training using Altium, MultiSim and Proteus * Embedded Firmware Design Training (C/C++, Assembly) * Schematics and PCB Design training

  • ibrahimdanish Profile Picture


    Göteborg,  Sweden

    Design and develop embedded systems particularity software Write device drivers for various peripheral devices, interface for external modules as well as higher level application in a layered as well as non-layered architecture. Programming Languages: Ada, Assembly, C/C++, Python, PHP, HTML, VB Script Microprocessor: PowerPC, XC167, ARM, FPGA, MSP, PIC, AVR, Arduino Compilers: GCC (ARM, AVR, PPC), Windriver DIAB, Tasking, MPLAB, Pic Basic Pro, Operating Systems: OSEK, MicroC/OS-II, FreeRTOS, CMSIS, Debian Linux Single Board Computers: Raspberry Pi, BeagleBone, Odroid, Arduino Development Environments: Eclipse, Visual Studio, IAR, MPLAB, CCS, AVR Studio, Keil µVision, PyCharm, Network buses: USB, CAN, J1587, SPI, I2C, RS232 Modules: GPS, GSM/GPRS, Bluetooth

  • siangming Profile Picture



    10 years experience in electronics development, skilled in analog and digital circuit design, schematics capture and PCB design. Firmware programming in ASM and C, experiences working with ARM Cortex-M micro-controllers, developing low-level drivers for common peripherals like SPI, I2C, UART, PWN, etc.