First the basic mosquitto video:

https://iotworkshop.africa/pub/AFNOG/Talk/mosquittoBasic.mp4

Then the video demonstration how a Python program on the IoT node can communicate through MQTT with the mosquitto server. The python program publishes dummy temperature data.

https://iotworkshop.africa/pub/AFNOG/Talk/mosquitto-1.mp4

The next video does not access MQTT but demonstrates how to switch an LED on a WeMos D1 prototype shield on and of. It also reads out a photo resistor and shows the change in resistance when the intensity impinging on it changes.

%ATTACHURL/%/protoDriver.mp4

Finally a video to demonstrate the full IoT system. You can switch the LED on the prototype board on or off with a Cayenne push button. This will change the light intensity on the photo resistor, which is shown on a gauge widget on Cayenne. If the light intensity falls below a predefined level a Cayenne trigger will switch built-in LED on the WeMos CPU on. If it goes back above that level, the built-in LED is automatically switched off again.

%ATTACHURL/%/cayenneProto.mp4