iot

IoT example (GrovePi+/SenseHat)

Library Required

• Sense Hat ( included in RASPBIAN STRETCH 2018-03-13 )

  sudo apt-get install sense-hat 

• GrovePi

  sudo curl -kL dexterindustries.com/update_grovepi | bash
  sudo reboot

• Paho

  sudo pip install paho-mqtt

Running

• Use 'git clone' to get the whole folder to local
• Run 'set_sense.sh' or 'set_grove.sh' accroding the type your sensor board
• Run 'iot_pub.py' to publish data
  • The status of middle button of joystick will be published (Sense Hat)
• Run 'iot_sub.py' to subscribe and display data
  • Use Up, Down, Left or Right to switch displayed info (Sense Hat)
  • Cover light sensor to switch displayed info (GrovePi+)
• Press Ctrl+C on console to exit the program

Code

• iot_pub.py
  • Publish sensor data to AWS broker.
  • Topic:

    iot/temperature/client_id     (GrovePi+/SenseHat)
    iot/humidity/client_id        (GrovePi+/SenseHat)
    iot/button/client_id          (GrovePi+/SenseHat)
    iot/potentiometer/client_id   (GrovePi+)
    iot/pressure/client_id        (SenseHat)
    iot/compass/client_id         (SenseHat)
    ...

• iot_sub.py
  • Subscribe to iot/+/ to receive data from specific client

TLS certificates

All certificates should be placed in cert folder.

CARoot.pem	CA file
**********-certificate.pem.crt	Client Certificate file
**********-public.pem.key	Client Public Key (unused for client)
**********-private.pem.key	Client Private Key

Broker Info

Server	a1zd8y5etgd1ze.iot.ap-northeast-1.amazonaws.com
Port	8883

MQTT.fx Settings