Set Up MQTT Explorer
- Download and install the MQTT Explorer. 
Setting up MQTT Explorer
Connecting to AWS
- Host : Your Host name (examples: a2m21kovu9tcsh-ats.iot.ap-southeast-1.amazonaws.com) 
- Port : 8883 
- Make sure you enable - Validate Certificate and Encryption
- Click on the - Advanced Settings

- Add application specific topics as shown below - For Lighting app, topic to be added (light/) - For onoff plug app, topic to be added (light/) - For Lock app, topic to be added (lock/*) 
- MQTT Client ID depends on the certificate set that you will use. 
- Add the Certificate, following step 7 in AWS installation 

- Once the above steps are done, try connecting to AWS. 

Connecting to Mosquitto Connection
- Host : Your Mosquitto ip address 
- Port : 8883 
- Make sure you enable Validate Certificate and Encryption 
- Click on the - Advanced Settings

- Add application specific topics as shown below - For Lighting app, topic to be added (light/*) 
- For onoff plug app, topic to be added (light/*) 
- For Lock app, topic to be added (lock/*) 
 
- MQTT Client ID depends on the certificate set that you will use. 
- Add the Certificate, following step 5 in openssl certificate create 
