Skip to main content

Communicate with cloud services from IoT device

Scenario:



  • Send sensor temperature to cloud through a gateway
  • If measured temperature is higher than 29ºC then switch warning light that is maroon lights switch on LED
  • If less than that, switch green LEDs
  • If no commands received from the cloud switch black LEDs
  • Show sensor temperature with silver color;
    • Number of tens in tens area i.e. if its 10 => 1 LED, if its 25 => 2 LEDs
    • First digit of the reading in units area i.e. 25 => 5 LEDs, 31 => 1 LED





Notes:


  • SenseHat has been used a sensor for temperature
  • RaspberryPI has been used as the gateway for the sensor
  • Bluemix is used for the back end cloud


Application architecture


Solution: Gateway workflow








Solution: Cloud flow








Node red export


Communicate with cloud services from IoT device-Gateway flow



Note: Copy below code in to import section in the NodeRed


[{"id":"f0c435a1.0388b8","type":"exec","z":"d94f3e5f.38adf","command":"vcgencmd","addpay":true,"append":"measure_temp","useSpawn":"","timer":"","name":"exec : vcgencmd","x":273.5000457763672,"y":81.5,"wires":[["12701f71.2a6d41"],[],[]]},{"id":"9f20a6ec.bef7f8","type":"inject","z":"d94f3e5f.38adf","name":"","topic":"","payload":"","payloadType":"str","repeat":"5","crontab":"","once":false,"x":103.00003051757812,"y":81,"wires":[["f0c435a1.0388b8"]]},{"id":"791c0367.b247bc","type":"debug","z":"d94f3e5f.38adf","name":"","active":false,"console":"false","complete":"payload","x":825.0000457763672,"y":80,"wires":[]},{"id":"12701f71.2a6d41","type":"function","z":"d94f3e5f.38adf","name":"format gateway temp","func":"var temp = msg.payload;\ntemp = temp.substr(5,4);\ntemp=parseFloat(temp);\nmsg.payload = {\"d\" : {\"temp\" : temp}};\nreturn msg;","outputs":1,"noerr":0,"x":502.00010681152344,"y":81,"wires":[["791c0367.b247bc","8594bd8f.f00c2"]]},{"id":"72172e2b.e1ab4","type":"rpi-sensehatsim in","z":"d94f3e5f.38adf","name":"EnvironmentEvents","motion":false,"env":true,"stick":false,"x":105.89997863769531,"y":244.0000991821289,"wires":[["35f58434.af8a5c"]]},{"id":"baf3ec66.613da","type":"debug","z":"d94f3e5f.38adf","name":"","active":false,"console":"false","complete":"false","x":825.9000091552734,"y":244.40003204345703,"wires":[]},{"id":"35f58434.af8a5c","type":"delay","z":"d94f3e5f.38adf","name":"Limit-5S","pauseType":"rate","timeout":"5","timeoutUnits":"seconds","rate":"1","nbRateUnits":"5","rateUnits":"second","randomFirst":"1","randomLast":"5","randomUnits":"seconds","drop":true,"x":315.4999237060547,"y":188.4000244140625,"wires":[["1e3e28b3.d929d7"]]},{"id":"1e3e28b3.d929d7","type":"function","z":"d94f3e5f.38adf","name":"format sense temp","func":"var temp = msg.payload;\nglobal.set(\"currentTemp\",temp.temperature);\nmsg.payload = {\"d\":{\"temperature\":temp.temperature,\"humidity\":temp.humidity}};\nreturn msg;","outputs":1,"noerr":0,"x":476.1999969482422,"y":249.20001983642578,"wires":[["baf3ec66.613da","8594bd8f.f00c2"]]},{"id":"9d0bbd86.1ff6e","type":"comment","z":"d94f3e5f.38adf","name":"Get SenseHat events","info":"","x":111.89996337890625,"y":190.00000762939453,"wires":[]},{"id":"d9045dca.cd323","type":"comment","z":"d94f3e5f.38adf","name":"Get gateway events","info":"","x":120.90000915527344,"y":32,"wires":[]},{"id":"8594bd8f.f00c2","type":"wiotp out","z":"d94f3e5f.38adf","authType":"g","qs":"false","qsDeviceId":"","deviceKey":"9e5ca693.f5a6a8","deviceType":"SenseHAT","deviceId":"sena1b2c3d4","event":"status","format":"json","name":"SenseHat IoT Out","x":756.4999847412109,"y":165.59998321533203,"wires":[]},{"id":"9df7a310.90ff6","type":"rpi-sensehatsim out","z":"d94f3e5f.38adf","name":"Sense Hat LED Sim","x":802.4999542236328,"y":362.99999237060547,"wires":[]},{"id":"9dd85f9e.94598","type":"function","z":"d94f3e5f.38adf","name":"LED function","func":"//Declarations\nvar latestCloudCommand = msg.payload;\nvar currentSenseTemp = global.get(\"currentTemp\");\nvar screenDisplay = \"\";\nvar tens = [\"2,2,silver\", \"1,2,silver\", \"2,3,silver\", \"1,3,silver\",\n \"2,4,silver\", \"1,4,silver\", \"2,5,silver\", \"1,5,silver\",\n \"2,6,silver\", \"1,6,silver\", \"2,7,silver\", \"1,7,silver\"\n];\nvar units = [\"6,2,silver\", \"5,2,silver\", \"6,3,silver\", \"5,3,silver\",\n \"6,4,silver\", \"5,4,silver\", \"6,5,silver\", \"5,5,silver\",\n \"6,6,silver\", \"5,6,silver\", \"6,7,silver\", \"5,7,silver\"\n];\n\n//LED color conditions\nif (latestCloudCommand.screen == \"on\") {\n node.warn(\"On LED\");\n screenDisplay = \",,#800000\";\n}\nelse if (latestCloudCommand.screen == \"off\") {\n node.warn(\"Off LED\")\n screenDisplay = \",,green\";\n}\nelse if (latestCloudCommand.screen == \"no\") {\n node.error(\"NO Command\");\n screenDisplay = \",,black\";\n}\n\n//Temp units\nnode.warn(currentSenseTemp);\nif (currentSenseTemp > 0) {\n if (screenDisplay && screenDisplay.length !== 0) {\n screenDisplay += \",\";\n }\n\n var nTens = Math.floor(currentSenseTemp / 10);\n var nUnits = currentSenseTemp % 10;\n\n //Tens update \n if (nTens > 0) {\n for (var i = 0; i < nTens; i++) {\n screenDisplay += tens[i];\n if (i + 1 != nTens)\n screenDisplay += \",\";\n }\n }\n\n //Units update\n nUnits = parseInt(nUnits);\n if (nUnits > 0) {\n screenDisplay += \",\";\n for (var i = 0; i < nUnits; i++) {\n node.warn(\"Adding unit\" + i + \"Values >\" + units[i]);\n screenDisplay += units[i];\n if (i + 1 != nUnits)\n screenDisplay += \",\";\n }\n }\n}\n\n\n\nmsg.payload = screenDisplay;\nreturn msg;","outputs":1,"noerr":0,"x":453.40907287597656,"y":361.81819915771484,"wires":[["4ca157f7.2d90a8","9df7a310.90ff6"]]},{"id":"86d90529.c75a48","type":"comment","z":"d94f3e5f.38adf","name":"Update SenseHat based on cloud","info":"","x":146.0454559326172,"y":307.90909437699753,"wires":[]},{"id":"48b7ec8d.1f1594","type":"wiotp in","z":"d94f3e5f.38adf","authType":"g","deviceKey":"9e5ca693.f5a6a8","deviceType":"SenseHAT","deviceId":"sena1b2c3d4","command":"+","commandType":"d","name":"","x":90.04545593261719,"y":361.18182373046875,"wires":[["9dd85f9e.94598"]]},{"id":"4ca157f7.2d90a8","type":"debug","z":"d94f3e5f.38adf","name":"","active":true,"console":"false","complete":"false","x":586.7221374511719,"y":518.0000057220459,"wires":[]},{"id":"9e5ca693.f5a6a8","type":"wiotp-credentials","z":"","name":"a1b2c3d4","org":"crrzlc","devType":"RasPi","devId":"a1b2c3d4"}]

Communicate with cloud services from IoT device-Cloud flow


Note: Copy below code in to import section in the NodeRed


[{"id":"9daee5f8.607468","type":"function","z":"d5256d04.38dea","name":"Set IoT device command","func":"var temp = msg.payload.d.temperature;\nif(temp){\n //node.warn(temp);\n if(temp > 29){\n node.warn(\"Temp above 29\");\n //on command\n msg.payload = {\"screen\":\"on\"};\n }\n else{\n //off command\n msg.payload = {\"screen\":\"off\"};\n }\n}\n//else{\n // msg.payload = {\"screen\":\"no\"};\n//}\n\nreturn msg;","outputs":1,"noerr":0,"x":362.5,"y":753.3999633789062,"wires":[["e20f54cc.5fb228","83185fea.18ac5"]]},{"id":"e20f54cc.5fb228","type":"debug","z":"d5256d04.38dea","name":"","active":true,"console":"false","complete":"payload","x":654.5000152587891,"y":843.6000366210938,"wires":[]},{"id":"83185fea.18ac5","type":"ibmiot out","z":"d5256d04.38dea","authentication":"boundService","apiKey":"","outputType":"cmd","deviceId":"sena1b2c3d4","deviceType":"SenseHAT","eventCommandType":"temp","format":"json","data":"{}","qos":0,"name":"IBM IoT Out to SenseHat","service":"registered","x":697.5000152587891,"y":752.3999633789062,"wires":[]},{"id":"69ad7761.319c18","type":"ibmiot in","z":"d5256d04.38dea","authentication":"boundService","apiKey":"","inputType":"evt","deviceId":"sena1b2c3d4","applicationId":"","deviceType":"+","eventType":"+","commandType":"","format":"json","name":"IBM IoT In","service":"registered","allDevices":"","allApplications":"","allDeviceTypes":true,"allEvents":true,"allCommands":"","allFormats":"","qos":0,"x":102.5,"y":754.5999755859375,"wires":[["9daee5f8.607468"]]}]
Labels:

Comments

Post a Comment

Popular posts from this blog

Turn off/ Hide Details panel/ Information Panel on modern SharePoint lists

Not always we require to show changes done by other which is a mandatory feature in SharePoint online.  What is details pane (aka. Information Pane)? Detail pane/ Information shows information regarding the document if you selected a one or its showing recent changes within a list or library. Follow link to Microsoft documentation about details pane. Bad news: Until Microsoft listen to User Voice , there is no straightforward way to enable disable this even you don't want. Good news: We could write a SharePoint framework extension to hack styles until Microsoft give us a permanent solution. How? I found this sample project (Inject CSS into modern SharePoint pages with React) which could reuse to our purpose. Thanks to Hugo for saving my time.  Steps to awesomeness:  Clone the project Resolve dependencies >  npm i Bundle >  gulp bundle --ship Package >  gulp package-solution --ship Upload package into SharePoint App catalog  
2 comments
Read more

File attach (POST) to SharePoint 2013 List (custom) using Angular JS via REST API

Following describes how to upload attachment to SharePoint 2013 custom list using Angular JS. Note: You can be consumed the JSOM libraries to achieve this, but there is limitation of 1.5 Mb. Better approach would be consuming exposed REST API (SharePoint OOTB) which allowed up to 2 Gb of file to attached using client side scripts i.e. Angular JS. . Here I have used the “Angular File Upload” which capable of doing more tasks other than basic HTML input file control. By consuming this we can attach multiple files either to the list and etc. You can be found the information on how to include this module to your Angular view in following link. Use package manager command to install the scripts. For bower  -->        bower install angular-file-upload For nugget -->       npm install angular-file-upload It requires file buffer array to POST (save) our attachment via REST API, browsers FileReader API is required to use. Its available with almost all common browsers. You need to ensure t
19 comments
Read more

📢 Update -Microsoft Teams IP Phones and Intune Enrollment

For customers who require desk phones and conference room phones to make and receive audio calls or join meetings, Microsoft Teams provides a growing portfolio of devices that can be purchased from our Teams Marketplace . For Teams phones including the Yealink T56A/T58A/CP960 and the Crestron Flex series IP phones that run on Android 5.x or later, there may be specific configurations that need to be enabled in the customer's tenant for the phones to successfully enroll into Intune.      Allowing successful Intune enrollment for Android versions 5.x and up     If all the following conditions below are true , you will need to enable a specific configuration setting in the Intune admin console to allow for a successful enrollment:   You are deploying a Teams IP phone with Android OS version 5.x or later.   You have connected your Intune tenant with managed Google Play in order to manage Android Enterprise devices.   You have configured your enrollment restrictions such that A
Post a Comment
Read more