Kategoriarkiv: tutorials

course, energy-efficiency, Iot, tutorials, Uncategorized

Grid Power Workshop

Together with the county government of Uppsala and the Uppsala municipality we held a workshop on the subject of the lack of capacity in the regional grid of Uppland. I have participated in several of the initiatives and is currently working alot with these solutions.

Live-in smartgrid is an initiative that I’m managing in through Sustainable Innovation, We try to make the whole region a testbed for smartgrid solutions. It’s a continuation on the the two very well renowned project ”coordinating power control” (#Väx_El) and ”Wise electricity” (#Klok_EL)

Here is my presentation (partly swedish) from the event

Iot, tutorials

Being friend with an Intel Edison and have Secure access over XMPP

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Today I started the amazing Intel Edison board to try and use the XMPP-IoT tools to connect it securely over internet and it worked like a charm.

inittial setup and configuring for wifi was done with the instructions from Intel, i used the mac version. It didn’t take long to get i hooked upp to wifi. Activate a password on root for it to enable remote ssh

https://software.intel.com/en-us/iot/getting-started

https://software.intel.com/en-us/articles/getting-started-with-the-intel-edison-board-on-mac

Upgrade flash image to the latest

http://www.intel.com/support/edison/sb/CS-035280.htm

http://www.intel.com/support/edison/sb/CS-035180.htm

 Get the software started

I am using a fork from the python SleekXMPP package. Just wget the SleekXMPP package with the XMPP-IoT extensions from my Github. Python 2.7.3 is  already on the machine. The GPIO package ”mraa” for python is also installed from the beginning very handy.

You need two XMPP accounts on a server somewhere there are many https://xmpp.net/directory.php I usually use the swedish jabber.se. Create two accounts so they later can talk to each other.

in the /home/root folder on the Edison do:

wget --no-check-certificate https://github.com/joachimlindborg/SleekXMPP/archive/xep_0323_325.zip
unzip xep_0323_325.zip

Start off with blinking the magical led

Go down in the example katalog and start the python Edison example with your xmpp account.

cd SleekXMPP-xep_0323_325/examples/IoT/
python IoT_GPIODevice_Edison.py -j yourfirstaccount@domain.com -p password -n test_device

should look something like this

Started_Edison

Now direct your browser to https://conversejs.org/# login with the other xmpp user you created. yoursecondaccount@domain.com.  Then choose to add a contact and  provide the first account it should just accept and you can start chat with the device. use ”hi”, ”toggle” ”relay=true” and ”?”

converse_addcontact
converse_chat

 

If you have a RELAY and a PIR sensor wire them up to the board use GPIO pin 13 for the relay and GPIO 8 for the PIR you can see the PIR sensor changing

Wirediagram_edisonRelay Pir and temp sensor on Edison

Some more interesting articles

 

The journal logs keep filling up so I changed the journaling.conf

to restart a clean image but I failed totally the reflashed edison keeps all settings

http://www.instructables.com/id/Factory-Reset-your-Intel-EdisonTroubleshooting-Con/step5/Reflash/

I found dokumentation on the opkg package manager very useful, especially the command to remove a package with dependencies

http://wiki.openmoko.org/wiki/Opkg/Documentation

opkg --force-removal-of-dependent-packages remove <<yourpackage>>

Examples on using GPIO with python on the Edison Aurduion board

https://github.com/intel-iot-devkit/mraa/tree/master/examples/python

Jumpers on the Edison board

https://communities.intel.com/docs/DOC-23455