Design an MQTT over GSM modem (with RS485 comms port)

Hi there! I would like to be considered for this project, I have 9 years of professional experience in embedded systems development. I have worked on SIMCOM, RS485 and MQTT as well. I believe i am the best candidate for this project. Please let me know if you need any info to secure this bid. Kind regards, Sadiq Amin,

This is an interesting job indeed as I have been working on MQTT over 2G/GPRS for over 2 years. I am experience electronic designer having wide skill set in these domains. Over 25 years of programming experience in C and around 30 years in electronics. My bid includes, designing the product, developing the firmware for it as well as making two prototypes. One for you and one for my testing and building the firmware. As I am doing this thing for over 2 years and many products have been deployed and running efficiently, so I can provide you a nice solution for it. Payment term would be in 2 steps, 1st milestone when design is ready and I plan for making the prototypes, 2nd payment when everything is tested successfully and the 3rd and final payment when you receive the product and tested at your side. By the way, instead of Hi-Link power brick I would suggest you to go for Meanwell power brick IRM-15 series. I found this IRM-15 series works really nice. I have used Hi-Link products as well. GSM needs lot of power when transmitting. Lets have a discussion so that I can provide you more details. Thanks

Hello, I am interested in your project and I hope to help you realize it, I am passionate about electronics and embedded development and I hope to share with you my knowledge and experience. I can do this work in 5days max. so, if you want to work with me I will guarantee you a good job delivered in the good deadline thank you and good luck ^^

Hello! I am MingChen. Nice to meet you! I have read your project carefully. I am very interested in your project. I am a Microelectronics and Automation engineering expert. I have a lot of experience in IoT technology. And I have a lot of experience in the MCUs and MPUs such as the ARM, FPGA, DSP, Arduino, Raspberry, PIC, ATMega and so on. I have used the various types of PLCs. And I can do the coding using Python, C/C++, Qt, C#, Java, PHP and so on. I hope to cooperate with you. I will wait your update. My regards.

I am an electrical engineer and interested in your project. I have read the description of your project. Kindly send me text to discuss the project in details. Thanks

Hi there, I am very interested in your project. I have developed many projects/products using MQTT for my clients and already developed solutions using GSM/4G/NB-IoT modems and holding 5+ years of hands-on industrial experience from prototype to mass production which will help you save development time and money. I also can help design thinking and advice appropriate solutions. Contact me for further discussion and I will share more information. Looking forward to working with you. Thanks & Regards

Hello client, nice to meet you. I have a lot of experience in IOT project research and development I have been involved in hardware research and development for many small sized IoT projects, personal wearable devices, environmental measurement sensors, smart fingerprint locks, ... using the ARM platform. cotex, STM32F, TMS320, MSP430, BLE 5.0, Wifi, RF, SIM and are connected via mobile applications (Android & iOS). I used to design the main product line for industrial printer using FPGA SoC, ARM Cotex A53, DDR4 memory, eMMC, SD card, ... Best regards

Dear, Sir. I am a senior Microcontroller developer and electronic engineer. After reading your description, I am very interested in your project. As you can see in my profile, I have developed the IoT and website , mobile app. I can develop the PIC, Atmega, STM32, WiFi and BLE Arduino like ESP32, ESP8266, MKR1400 , SIM800/900/7100A, nRF51/52, many kinds of sensors. Also as I am hardware developer, I can design the circuit and PCB using Altium Designer and EAGLE. As I am a smart device manufacturer, I hope we can discuss the project in detail via a private chatting. I am ready to start working immediately. I will wait patiently for your response. Best regards

Hi, I have designed Modem using MC60E and EC25 with 2G and 4G both. Compact power supply for module for sensors system. Also different connectors RJ45, RJ11 and DB9 etc.. For RS485 i generally use Texas Instruments chips. SN65176(Other IC also available in same package) Developed Vehicle tracker using this 2G and 4G modules. My brother is website designer, together we designed website and device communication. this is already deployed. Kindly provide futher information. Thanks and regards Vikram Dabas Design Engineer(8-Years)

This is very interesting concept and we are expert in 2G/3G/LTE modules interface, backend with MQTT, and embedded interface. We will provide you this LTE gateway with hardware and software compete support. So sensors sends data via RS485 to this gateway and gateway share the data with server through LTE modem. We can also provide you sensor data dashboard with alerts indication features. Let us discuss this in detail looking forward to hear from you.