http://www.ezpic.org/ 2026-04-14T01:11:07+0200 http://www.ezpic.org/ http://www.ezpic.org/lib/tpl/codowik/images/favicon.ico text/html 2018-07-20T18:31:08+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?id=tut:mqtt&rev=1532104268&do=diff What is MQTT ... see Wikipedia ... see <https://www.hivemq.com/blog/mqtt-essentials-part-1-introducing-mqtt> ... see <https://blog.doubleslash.de/mqtt-fuer-dummies/> MQTT Data Flow by Examples Based on this image the following examples can show typical data flows Example: 1 Publisher, no Subscriber * Client X connected If Client X publishes any data with Topic 1 and nobody is listening (nobody has subscriped Topic 1) the data is lost. text/html 2018-07-16T12:20:43+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?id=tut:setup&rev=1531736443&do=diff # First Steps ## Install on RaspberryPi ### Start a terminal ### Get the source code from GitHub repositors ``` " git clone <https://github.com/falab-wue/ezPiC>" ``` A directory `ezPiC` is created ### Set actual user privileges for socket access ``` " sudo touch /etc/authbind/byport/80 text/html 2018-07-16T12:20:31+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?id=tut:index&rev=1531736431&do=diff Tutorials tut:setup text/html 2018-07-16T12:18:06+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?id=plg:gadgets:hx711&rev=1531736286&do=diff # Gadget Plugin “HX711” ## Description TODO ## Settings SettingDescription:---:---Gadget NameEnabled ## Connecting Half-Bridge Sensors  The Sensors have colored cables typically red, black and white. See image for right wirering. text/html 2018-07-16T12:17:50+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?id=plg:gadgets&rev=1531736270&do=diff I/O-Gadgets I/O-Gadgets are... Plugin ID Name Description gdMP3Ser MP3 Notification (serial) MP3-Player for DFPlayer Mini / YX5300 gdDMM_* DMM * Group of Digital Multimeters with serial Communication gdDust_* Dust Sensor * Group of Devices with serial Communication text/html 2018-07-16T12:15:44+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?id=dsc:boards&rev=1531736144&do=diff # Boards BoardRAM---PCmuchRaspberry Pi650kESP32100kPyBoard100k ## Board Detection ``` " " " import sys sys.platform" " " ``` BoardPlatform--PCmuchRaspberry Pi650kESP32100kPyBoard100k text/html 2018-07-16T12:15:06+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?id=dsc:index&rev=1531736106&do=diff Description dsc:boards text/html 2018-07-16T12:13:46+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?id=arc:cmd:gateway&rev=1531736026&do=diff # Gateway-Commands The Gateway-Commands use the same structure and types as the Gadget-Commands. Simply replace: * Gadget --> Gateway * EZPID --> EZPID text/html 2018-07-16T12:13:18+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?id=arc:cmd:gadget&rev=1531735998&do=diff # Gadget-Commands ## Command “gadget.stage.list” Gets a list of all gadget plugins. Each element of the list contains a dict #### JSON elements Key Value Comment --- CMD “gadget.stage.list” #### CLI `gadget.stage.list` or `pdl` #### Return List of dicts: text/html 2018-07-16T12:12:42+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?id=arc:index&rev=1531735962&do=diff Architecture arc:features arc:framework arc:plugins arc:commands arc:cmd:gadget arc:cmd:gateway arc:cmd:rule arc:cmd:system text/html 2018-07-16T12:10:53+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?id=arc:commands&rev=1531735853&do=diff # Overview Commands are used to get information from the IoT-device and send configuration data to it. Commands can be send via a JSON string or a “command line interface” (CLI) like string. ## Commands in JSON-Format JSON commands have the folloging elements: text/html 2018-06-22T21:08:32+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?image=ezpic_logo.png&ns=&rev=1529694512&tab_details=history&mediado=diff&do=media <img src="http://www.ezpic.org/lib/exe/fetch.php?w=500&h=150&t=1529694512&amp;tok=f8f259&amp;media=ezpic_logo.png" alt="ezpic_logo.png" /> text/html 2018-06-22T21:04:57+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?image=ezpic3.svg&ns=&rev=1529694297&tab_details=history&mediado=diff&do=media text/html 2018-06-22T20:52:36+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?image=arc%3Amodules_iotx.svg&ns=arc&rev=1529693556&tab_details=history&mediado=diff&do=media text/html 2018-06-22T20:52:11+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?image=ezpic2.svg&ns=&rev=1529693531&tab_details=history&mediado=diff&do=media text/html 2018-06-22T19:00:04+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?image=arc%3Amodules_iot.svg&ns=arc&rev=1529686804&tab_details=history&mediado=diff&do=media text/html 2018-06-22T18:59:28+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?image=ezpic.svg&ns=&rev=1529686768&tab_details=history&mediado=diff&do=media text/html 2018-06-22T16:40:41+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?image=tut%3Amqtt%3Amqtt7.svg&ns=tut%3Amqtt&rev=1529678441&tab_details=history&mediado=diff&do=media text/html 2018-06-22T16:40:41+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?image=tut%3Amqtt%3Amqtt6.svg&ns=tut%3Amqtt&rev=1529678441&tab_details=history&mediado=diff&do=media text/html 2018-06-22T16:40:41+0200 jk (jk@undisclosed.example.com) http://www.ezpic.org/doku.php?image=tut%3Amqtt%3Amqtt5.svg&ns=tut%3Amqtt&rev=1529678441&tab_details=history&mediado=diff&do=media