wiotp Python SDK to Node-RED Dashboard
Node-RED Dashboard for Python wiotp psutil sample
The Watson IoT Python SDK (wiotp) includes several samples that demonstrate how to send data from a system to Watson IoT Platform. The psutil example sends system utilization data to Watson IoT. This Node-RED dashboard flow can be deployed to an IBM Cloud hosted Node-RED Internet of Things web app. It displays the system utilization and can send MQTT commands back down to the iotpsutil.py script. Together, the Python script and this flow demonstrate the techniques necessary to use the wiotp Python SDK MQTT publish / subscribe functions and how to connect them to Watson IoT and Node-RED running in IBM Cloud. This might be helpful on constrained embedded systems that are headless but are capable of running Python - eg Raspberry Pi, Onion Omega, ST Microelectronics STM32MP157C-DK2, Linux, etc.
Node-RED Dashboard - psutil System Utilization
Node-RED flow running in IBM Cloud
Instructions
- Follow the wiotp Python SDK installation steps
- Read about the wiotp psutil sample
- Download / unpack the sample Python scripts via
wget https://github.com/ibm-watson-iot/iot-python/archive/master.zip
- Visit your Watson IoT Platform service instance
https://<myorgid>.internetofthings.ibmcloud.com/dashboard/devices/browse
- Create a DeviceType called PythonExample
- Create a Device called psutil
- Set the device credentials as env vars or in a device.cfg
$ export WIOTP_IDENTITY_ORGID=myorgid
$ export WIOTP_IDENTITY_TYPEID=PythonExample
$ export WIOTP_IDENTITY_DEVICEID=psutil
$ export WIOTP_AUTH_TOKEN=myauthtoken
- Run the script
$ python iot-python-master/samples/psutil/src/iotpsutil.py -v
A tutorial guiding you through the process of setting up this python sample on a Raspberry Pi is published on IBM Developer developerWorks Recipes
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