MQTT (Message Queue Telemetry Transport) is a protocol for collecting device data and communicating it to servers (D2S) Hire MQTT Developers

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    A software system built with QT5 that can collect data from different sensors from multiple buildings and multiple floors and can show on the floor plan the sensor. The IOT sensors will communicate with TCP and UDP. Support for MQTT is also helpful. It should have the ability to a. Login with username/password. Integration with LDAP is preferred b. Ability to add buildings and floors c. Ability to add floor plans d. Ability to place sensors on the floor plan e. Ability for showing sensor info when click on the icon of the sensor on the floor plan f. Display data from sensors g. Use SQL server or MySQL or Sqlite for database See wireframe screenshots for more examples

    $475 (Avg Bid)
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    We are looking for a developer to work on this project to develop a online web app which can monitor and control multiple sites using IOT (MQTT) & BACNET. There will be a need for different dashboards with different levels of user permissions and a tool for reporting variable results captured from the sites. Must have experience with MQTT, BACNET & other protocols required with the project. This is an ongoing project so 12 Month support will be required. Demonstration app/web page to be functional within 2 weeks and roll out of 47 customised sites following successful use of the 1st site.

    $916 (Avg Bid)
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    Hello, I need help in implementing the proposed below concept. Attached the pic for the reference The implementation required is very basic. The Laravel with MQTT, Android App and ESP code System Architecture ------------------------------ 1. Mosquitto MQTT with Laravel installed on the dedicated server 2. MQTT clients are added to ESP8266 and Android App 3. ESP8266 is connected to temperature sensor and humidity sensor 4. ESP8266 connected to two LEDs, if temperature is above 40 degree then LED turns on 5. The ESP8266 LED can be remotely turned off by using Android app Functionality ------------------------------ 1. The ESP8266 posts all the info to Server 2. Server publishes the info to App 3. App sends the control info to server 4. Server publishes the control info to device 5. The server laravel web displays the customer info along with lotus status of temperature and control info as shown in the attached pic 6. There could be hundred devices and hundred apps, all the communication should happen between respective device and app Duration 2 days and maximum 15000/-

    $331 (Avg Bid)
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    I'm looking for a Python developer who writes me a small script for a Raspberry PI to switch GPIO pins via MQTT topic (Subscribe).

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    6 bids

    I would like to control many ESP8266 devices without opening ports on router. Control them from a server or hosting provider by categories, like ALARM, OUTLETS, POWER STRIPS, DIMMING LIGHTS and so on.

    $401 (Avg Bid)
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    Hi there, We have an RFID reader that I need to connect to a Web App so that a basic CSV file of the RFID tag number and time / date of scan (7000) records can be upload on connection via USB or BlueTooth. The RFID reader has the following specs - CPU ARM(STM32) working frequency 134.2KHz If you have experience building web apps with MySQL or MQTT to PHP that would be great. Just need a simple mobile friendly web app built that can connect to the RFID reader and view / import the read / write records stored on the RFID reader. There is an SDK available - connect to PC via USD for read and export to csv. Thx

    $71 / hr (Avg Bid)
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    I need to create a sound level meter for ambients with a digital microphone. Also need to show both infos in a 7" LCD displya and save those info to a .csv file. The hardware part for the development is a STM32L496RG MCU and is already setup with STM CubeMX to communicate with a ICS43434 I2S Digital MEMS Microphone which outputs 2 words of 32 bits each, for right and left channels, from those 32 bits, 24 ares used for signal data as you can see on the images. I'm using Keil IDE to debug and load the code to the board. I can provide the code that I have so far and also the registers which the data is being fed so you can keep going from there. The main goal is to get the data from each channel of the microphone and transform to decibel (dB) and also make a Fast Fourier Transform (FFT) to display the frequency domain and save all this information in a .csv file. A second goal would be to show this spectrum analyzer and the value in dB on a 7" screen and provide this dB and FFT information to a webserver database which could be accessed online at any moment (maybe MQTT protocol). So mainly you have to know about C/C++, embedded systems, STM32, I2S protocol, pointers, arrays, DMA, dynamic and static memory. The second goal we can discuss later.

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    The requirement is to transfer scan the ble beacon data and send it to Azure or AWS or sitewhere cloud using MQTT. We are using raspbeery pi and eddystone format beacon. The agent program to be written on Raspberry pi to scan, filter and process the data, then transfer it to cloud and store it in Mongo db

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    Modify a ROS Code Ended
    VERIFIED

    I have a code of ROS Kinetic ([login to view URL]) and I need few modifications in it. -I have data of GY80(IMU) coming via MQTT this code should display that data. -I have "choice value" coming from another MQTT topic, this code should get that. E.g, if "office 1" is being received, the turtle should start moving towards "office 1" -At the end, I have a GY080 with some micro-controller and few buttons. When I press button 1, "office 1" is sent to ROS via MQTT publish method. Let's suppose I have this assembly of GY80 in my hand, I press button 1 and start walking, now ROS should check the obstacles and based on my movements it should, in real time, send vales to GY80 Connected MCU via MQTT like "move left","move forward","obstacle encountered". Keep in mind I only want to use IMU and no camera and nothing else. The link I have provided has everything setup, you just need to implement the thing that movement data should be sent to MCU via MQTT and should be in realtime that means the person with GY80(IMU) will be walking on the same map as in ROS and should be able to get notification like if he wants to go to office 1, the ROS should sent data on each step and each turn that move left, right etc. I think tat is pretty much straight forward and easy to implement in a day or two. You won't need to program any MCU, you will be assigned to work on ROS code in python.

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    Add some features to existing app mobile

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    The task involves the development of following: 1. Setting up MQTT Server 2. Creating Database 3. Web application to serve RESTful API 4. Dashboard for visualization 5. All this to be hosted on Microsoft Azure

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    We are looking for a customer focused, hands-on technical expert to support the boot camp activities in Singapore and Hyderabad. Looking for a Star Android Bootcamp trainer, who will be part of our Global transformation and modernization projects and can bring the best practices to the Technology development and empower customers with 2020 vision technologies. Travel: Yes (as per business needs) Location: Singapore & Hyderabad, India (Bootcamp sessions) Skill Set: -Experience on Java, Android SDK, Android STUDIO. -Knowledge and experience with JSON / XML / SOAP & REST required. -Comfortable in Git repositories of GitHub/GitLab. -Experience with the Material design. -Knowledge or experience with The Emulator. -Should maintain Course content/design material. -Analytical ability, problem solving skills and decision-making skills. -Customer focused and results driven. -Experience in qualifying sales opportunities. -Good command of spoken and written English (Removed by Freelancer.com Admin)

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    We have a raspberry pi 3b which runs a python script when it starts up, this sends an SMS on our mobile phone with raspberry's default mac address and connecting time, when raspberry disconnects, it sends a similar message at disconnection. We need this script to update thing shadow as well. For eg: if Raspberry Pi 3B-1 is connected and I log into our AWS Console and check thing shadow for Raspberry Pi 3B-1, it should show connected with connecting time stamp and vice versa for disconnected. This is a very simple and easy project as everything ready and working, so I expect reasonable bids. If you bid on this project - 1) you need to provide us with the python script. 2) And demonstrate a working example on our AWS account and things registered with it. Thank you.

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    I am currently looking for a freelance developer to take some workload of my shoulders. The required skill would be (in a nut shell) integration of API's from one platform to another. If he/she is good at App development for both IOS and Android that would be a bonus.

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    Environment: OpenWrt on MediaTek LinkIt Smart 7688 Customization: Implement x.509 CA for cloud authentication Implement MQTT client with JSON payload for cloud communication Customize Wi-Fi network setup and connection via a smartphone app: broadcast a default SSID for app to connect, discover and select a SSID to connect.

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    We have a Zigbee gateway with internet connection, and we want to be able to manage it using MQTT. Zigbee gateway (linux-based) has a REST API, well documented. Please contact us if you have experience.

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    We have a server running MQTT with raspberry pi clients. We are looking for someone to provide ongoing support for this project. Only apply if you have MQTT experience, further details available on PM.

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    MQTT Broker DASHBOARD for connecting IoT devices and device management. Candidates should have a very good understanding of how the MQ!T protocol works and about IoT devices.

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    we have esp 32 . proximity sensor, ultrasonic sensor, bme280, voc sensor, 4 relays, lux sensor. all to be controlled by esp32 which transfers all data to our app. we want to use mongoose os for security and Mqtt. most sensors have mongoose os library but few do not and would need to be imported from audrino and wrapped in mongoose os wrapper

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    We are looking for somebody with extensive experience with the AWS IoT platform and the MQM approach. Specially how to set up the AWS IoT so it can handle many devices/things efficiently and automatically. The project also includes to integrate services to process incoming messages and take the correct actions depending on rules. We want to be sure that we find the right freelancer/company so we have defined an initial task to do so we can evaluate. It will take 10-15. Depending on the result from the initial task we may continue for long term work. We have devices on a meshed RF network. The communicate with the AWS cloud via gateways. Mesh network topology assumes several accessible gateways. Device will select most suitable gateway, and then connect to it. However, in case if gateway lost connection with AWS IoT, or malfunction, or some radio noise and RF-channel errors, the device can select another gateway, and continue communications with it. So, there is no predefined gateway for mesh device. Each thing interacting with cloud services via MQTT-SN messaging protocol. Gateways interact with AWS MQTT broker. The initial is to automatically register devices (and device types). We should also within this task do some configuration of the devices using a request/response ("fan-in", and "fan-out") paradigm implementation. The gateway is already up and running for you to use. Also we have included in the task to make some basic parts of simulation tool to be used to test the registration and configuration. It will be described in details later.

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    cloud applications Ended
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    we need a developer to create and to develop an account on AWS for our mobile app based controller.

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    Hello, I need a controller based on ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2. receive instructions from the server via MQTT Protocol to switch ON/OFF or to generate a PWM. 3. ESP8266 should first authenticate the webserver then send and receive data as per the following format (Esp no., pin no., action (ON/OFF or PWM), starting time). Please read well the requirements and quote only if you are committed and ready to work and the bid MUST BE FIXED and according to the mentioned requirements. Regards,

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    Hello, I need a controller based on ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2- There are some manual switched to turn ON/OFF some devices manually in case the server connection is down, and those switches should be interfaces to the relays to control them either manually or from the server. 3 - It should read Modbus and send the data to the server. 4 - it should work as a universal IR remote control,and the controller should learn any remote control code and send it to the server to be stored then we can control any device from the web-server instead of using the IR remote control via IR LED. 5 - the server will send the instructions to the controller to be executed as it is without any processing in the controller. i.e. (PinA.1,ON,3 hours). The cost estimation for such scope of work is max. 75 USD and the delivery time is 3 days. Finally, Please no time wasters and changing the price after submition is not acceptable for the above mentioned scope of work (no random quotes please). Best Regards

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    raspberry pi Ended
    VERIFIED

    need a gateway based on Raspberry pi to be the interface between some controllers via MQTT Protocol and our server via also MQTT Protocol. server <MQTT> gateway<MQTT> controllers your bid should be final and no time wasters please. regards

    $55 (Avg Bid)
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    Hello, I need a controller based on ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2. receive instructions from the server via MQTT Protocol to switch ON/OFF or to generate a PWM. 3. ESP8266 should first authenticate the webserver then send and receive data as per the following format (Esp no., pin no., action (ON/OFF or PWM), starting time). please read well the requirements and quote only if you are committed and ready to work. Regards,

    $24 (Avg Bid)
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    Hello, I need a controller based on ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2. receive instructions from the server via MQTT Protocol to switch ON/OFF or to generate a PWM. 3. ESP8266 should first authenticate the webserver then send and receive data as per the following format (Esp no., pin no., action (ON/OFF or PWM), starting time). please read well the requirements and quote only if you are committed and ready to work. Regards,

    $25 (Avg Bid)
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    2 bids

    Hello, I need a controller based on ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2. receive instructions from the server via MQTT Protocol to switch ON/OFF or to generate a PWM. 3. ESP8266 should first authenticate the webserver then send and receive data as per the following format (Esp no., pin no., action (ON/OFF or PWM), starting time). please read well the requirements and quote only if you are committed and ready to work, and the budget is max 40USD for such scope of work and no need to bid please if you can't meet it. Regards,

    $100 (Avg Bid)
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    1 bids

    Hello, I need a controller based on ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2. receive instructions from the server via MQTT Protocol to switch ON/OFF or to generate a PWM. 3. ESP8266 should first authenticate the webserver then send and receive data as per the following format (Esp no., pin no., action (ON/OFF or PWM), starting time). please read well the requirements and quote only if you are committed and ready to work. The budget is max. 40USD for such scope of work. Regards,

    $25 (Avg Bid)
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    1 bids

    Hello, I need a controller based on ESP32 or ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2- There are some manual switched to turn ON/OFF some devices manually in case the server connection is down, and those switches should be interfaces to the relays to control them either manually or from the server. 3 - It should read Modbus and send the data to the server. 4 - it should work as a universal IR remote control,and the controller should learn any remote control code and send it to the server to be stored then we can control any device from the web-server instead of using the IR remote control via IR LED. 5 - the server will send the instructions to the controller to be executed as it is without any processing in the controller. i.e. (PinA.1,ON,3 hours). The cost estimation for such scope of work is 75 USD and the delivery time is 5 days. Finally, Please no time wasters and changing the price after submition is not acceptable for the above mentioned scope of work (no random quotes please). Best Regards

    $169 (Avg Bid)
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    2 bids

    Hello, I need a controller based on ESP32 or ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2- There are some manual switched to turn ON/OFF some devices manually in case the server connection is down, and those switches should be interfaces to the relays to control them either manually or from the server. 3 - It should read Modbus and send the data to the server. 4 - it should work as a universal IR remote control,and the controller should learn any remote control code and send it to the server to be stored then we can control any device from the web-server instead of using the IR remote control via IR LED. 5 - the server will send the instructions to the controller to be executed as it is without any processing in the controller. i.e. (PinA.1,ON,3 hours). The cost estimation for such scope of work is 75 USD and the delivery time is 5 days. Finally, Please no time wasters and changing the price after submition is not acceptable for the above mentioned scope of work (no random quotes please). Best Regards

    $177 (Avg Bid)
    $177 Avg Bid
    4 bids

    Hello, I need a controller based on ESP32 or ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2- There are some manual switched to turn ON/OFF some devices manually in case the server connection is down, and those switches should be interfaces to the relays to control them either manually or from the server. 3 - It should read Modbus and send the data to the server. 4 - it should work as a universal IR remote control,and the controller should learn any remote control code and send it to the server to be stored then we can control any device from the web-server instead of using the IR remote control via IR LED. 5 - the server will send the instructions to the controller to be executed as it is without any processing in the controller. i.e. (PinA.1,ON,3 hours). The cost estimation for such scope of work is 75 USD and the delivery time is 5 days. Finally, Please no time wasters and changing the price after submition is not acceptable for the above mentioned scope of work (no random quotes please). Best Regards

    $250 (Avg Bid)
    $250 Avg Bid
    1 bids

    Hello, I need a controller based on ESP32 or ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2- There are some manual switched to turn ON/OFF some devices manually in case the server connection is down, and those switches should be interfaces to the relays to control them either manually or from the server. 3 - It should read Modbus and send the data to the server. 4 - it should work as a universal IR remote control,and the controller should learn any remote control code and send it to the server to be stored then we can control any device from the web-server instead of using the IR remote control via IR LED. 5 - the server will send the instructions to the controller to be executed as it is without any processing in the controller. i.e. (PinA.1,ON,3 hours). The cost estimation for such scope of work is 75 USD and the delivery time is 5 days. Finally, Please no time wasters and changing the price after submition is not acceptable for the above mentioned scope of work (no random quotes please). Best Regards

    $167 (Avg Bid)
    $167 Avg Bid
    7 bids

    Hello, I need a controller based on ESP32 or ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2- There are some manual switched to turn ON/OFF some devices manually in case the server connection is down, and those switches should be interfaces to the relays to control them either manually or from the server. 3 - It should read Modbus and send the data to the server. 4 - it should work as a universal IR remote control,and the controller should learn any remote control code and send it to the server to be stored then we can control any device from the web-server instead of using the IR remote control via IR LED. 5 - the server will send the instructions to the controller to be executed as it is without any processing in the controller. i.e. (PinA.1,ON,3 hours). The cost estimation for such scope of work is 75 USD and the delivery time is 5 days. Finally, Please no time wasters and changing the price after submition is not acceptable for the above mentioned scope of work (no random quotes please). Best Regards

    $182 (Avg Bid)
    $182 Avg Bid
    3 bids

    Hello, I need a controller based on ESP32 or ESP8266 to do the following: 1- Read the values from LDR,PIR,ON/OFF Switches,Temp. Sensor & Modbus Port then Send them to the webserver via MQTT protocol. 2- There are some manual switched to turn ON/OFF some devices manually in case the server connection is down, and those switches should be interfaces to the relays to control them either manually or from the server. 3 - It should read Modbus and send the data to the server. 4 - it should work as a universal IR remote control,and the controller should learn any remote control code and send it to the server to be stored then we can control any device from the web-server instead of using the IR remote control via IR LED. 5 - the server will send the instructions to the controller to be executed as it is without any processing in the controller. i.e. (PinA.1,ON,3 hours). The cost estimation for such scope of work is 75 USD and the delivery time is 5 days. Finally, Please no time wasters and changing the price after submition is not acceptable for the above mentioned scope of work (no random quotes please). Best Regards

    $102 (Avg Bid)
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    3 bids

    Necesito una pagina web sencilla en javascript o similar que lea unos datos publicados en un broker online tipo [login to view URL] y los grafique. Algo asi [login to view URL] pero en sencillo. El dato a graficar es un numero. Necesitaria los fuentes actualizados y una pequeña guia sobre como ejecutarlo en una raspberry

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    Details will be discussed with winning bidder.

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    The project is based on Its based on node.js, json, mqtt, node-red, bluemix

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    Need to control a Buzzer from a web Application using a MQTT Protocol enabled device.

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    We are looking for a freelancer with extensive experience with the AWS IoT platform and the MQM approach. Specially how to set up the AWS IoT so it can handle many devices/things efficiently and automatically. This is separated task that we consider an initial task. If successful there could be a long-term relationship to be involved in building a the rest of our IoT platform. Here follows a short description of this task. We have devices on a meshed RF network. The communicate with the AWS cloud via gateways. Mesh network topology assumes several accessible gateways. Device will select most suitable gateway, and then connect to it. However, in case if gateway lost connection with AWS IoT, or malfunction, or some radio noise and RF-channel errors, the device can select another gateway, and continue communications with it. So, there is no predefined gateway for mesh device. We should provide easy bulk installation scenarios where security and identity check are important. The platform should manage different device types that may require different sets of application configuration. The initial task concerns Device Management and specifically the following: - Device Registering - Security & Identity - Device Provisioning New devices are powerup in the field and they automatically send out a registration request to our AWS IoT platform. The registration request contains at least the Device ID but also information about the type of device. Propose procedure for doing a registration and authentication in the AWS IoT platform? Explain in detail your proposal. If it is deviates from standard methods provided by AWS IoT services, then be sure to explain why you chose that. Also explain about security. Next if registration step was successful then we may need to retrieve static information about the device (for example hardware/software version, manufacturerID etc). Other basic static information must be added at some point, for example coordinates, address, asset reference etc. We also need to configure the device with application configuration (for example setpoint, alarm limits, calendar data, heartbeat time etc). Describe different cases of installation scenarios and how they are generally done in AWS IoT. This task will include implementing this part of Device Management. We will provide gateways and device simulation tool for this task, So, to summarize this initial task: Freelancer should propose Device Management including the part described above. It may require input from an AWS IoT architect. Anyway, when we come to an understanding what should be done you need to provide a fix price for this part. In the next on-going project, there will be based on an hourly rate. The technical details (protocols, payload limits, call protocols, etc) will be provided when needed. When replying please describe your experience with AWS IoT. Describe reference projects. In the projects details above we have written that the freelancer should propose a solution for the Device Management task. Just so we know that you have some experience please describe briefly about device managment in AWS IoT.

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    MQTT Broker and server setup for android

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    IOT internet of things related to Home Automation and Security systems. Developer should have MQTT server knowledge.

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    We need to make code in PHPoC in order to : 1) Connect to our MQTT server and publish periodical data from : DS18B20, DTH22, one analog sensor and one digital input. All these from PHPoC Black P4S-341 from Sollae Systems 2) Subscribe to a subject in order to control a Digital Output of same board

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    This is a very easy project for anyone who knows Node-RED! I want 4 "switches" from the Node-RED dashboard (that I can toggle on / off from UI).. Each time I hit a button "GO" on the UI, I'd like to send a string "BLUE"+ the combined status of those switches... So as example, If I hit the "GO" button, and switch 1 is on and switches 2,3,4 are off, Id like to send message payload of "BLUE,1,0,0,0" Or if I hit the "GO" button and all 4 switches are on, I'd like to send "BLUE,1,1,1,1" as the message payload

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    Need to write dll in c# that will support MODBUS RTU over UDP protocol ( master side only) in way of choosing various IP addresses and able to read (poll) 40 different registers and write to those registers. Need also Winform screen to be able to test this dll . I am Thermal project application eng'

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    I have many telegram accounts and I wanna register them to many Telegram SuperGroups. I've created a super group and sending group links to that group. I need a robot or something like that to read that group and joining on groups. I don't want to use telegram-cli because telegram bans them accounts. so if you can do this with api or... please shoot your ideas and offers. if it's not clear send me a message. Thanks

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    Need an app to interact with a NodeMCU using MQTT protocol using an MQTT server. Need someone who knows or has experience working with mqtt.

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    I need a simple webapplication to control and get data from devices. Through webapplication I should be able to send signals to devices like on/off I should be able to get messages from components and be able to visualize their status on my web dashboard. For example if I am using voltage sensor to get voltage of a bulb, I should be able to get that voltage value in real time on my web app and display it.

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