WIZ550io+ATMega328で IoT製作、MQTTも

Title (eg) : 

IoT produced in WIZ550io + ATMega328, also MQTT

#1 Overview : 

With MQTT, Author controlled LED at the first as a test. Then sensing CDS to monitor on the web with sending the value to the MQTT server. Installed module the WIZ550io in SPI communication with 100BaseTX.

#2 Parts :

WIZ550io v1.1 

ATmega328P-PU

Step-down regulator 3.3

470uF capacitor 

Micro USB

#3 Wired :

[WIZ550io]  to [ATmega328]

    MOSI  ———  D11

    MISO  ———  D12

    SCLK   ———  D13

    SCSn   ———   D10

    3.3V    ———   3.3V

    GND   ———   GND

This information is for SPI communication .

User can refer this posting (http://knaka0209.blogspot.jp/2015/10/mqtt-2.html) how to build LED control with MQTT

This below picture is the hardware for sensing the illumination with CDS.

#4 Summary

The Author says UNO will be easier than this. In the project, one thing realizing is switch response of the via MQTT is fast and also can control or sensing multiple things.

Author : Knakashima

Blog : http://knaka0209.blogspot.kr/2015/10/wiz550io-1.html

Code : https://gist.github.com/kuc-arc-f/16a716a241e1a193a521#file-mqtt-arduino_sensor_3-ino

TAG: WIZ550io, ATMega328, MQTT