alert-indicator

Using this project, a separate physical Node MCU can be informed using MQTT protocol and a HTTP request

Creating a AWS Broker

• Sign in to your AWS account
• Under Find Services Search and go for IoT Core
• Goto Manage > Things
• Click Create
• Click Create a single thing
• Give a Name to the thing (Alert-Indicator)
• Click Next
• Under One-click certificate creation (recommended) Click Create certificate
• Download given links
  • A certificate for this thing
  • A public key
  • A private key
  • A root CA for AWS IoT > RSA 2048 bit key
• Click Activate
• Register a thing
• Then It will be shown that Successfully Created a thing
• Secure > Policies
• Click Create
• Give name for the Policy (Alert-Policy)
• Customize your rules
• More on here

For more, refer these links

• Flashing Certificates To ROM
• AWS IoT With Arduino