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Arduino Leonardo measuring temperature and humidity with DHT11 sensor and presenting measurements in a web-page through W5100 Ethernet shield
We taught a workshop on how to create interactive art with the Arduino platform at the Mill Valley Library on October 24, 2015.
We showed 9 students how to make lights blink, sounds play, motors move, and how to add more color with neopixel LEDs, as described in this online guide we created for the workshop:
At the end of the workshop, we asked participants if they would like to this again, and the answer was a resounding yes! Participants told us they learned a lot from this workshop and would not only come back for future workshops, but also recommend this program to their friends.
Instructors for this workshop were Donald Day and Fabrice Florin, with support from Natalie and Jean Bolte. We are all members of Pataphysical Studios, the art collective behind the ‘Pataphysical Slot Machine’, our poetic oracle.
Come visit the exhibit this month! We’re open every Saturday and Sunday in October, from 1 to 5pm, in the downstairs conference room of the Mill Valley Library.
Special thanks to the Mill Valley Library and the Friends of the Library for making these workshops possible — especially Kristen Clarke, who helped us get the Arduino parts and set up for the workshop.
View more photos of the exhibit: www.flickr.com/photos/fabola/albums/72157659147117739
Sobald die Pflanzen Durst kriegen (kein Wasser im Unterkasten) ist es Zeit die Wasserpumpe einzuschalten, um die Pflanzen mit frischem Wasser zu versorgen.
I was watching my Lego crane offloading Arduino Container...
Scary Job :D, but well done :)
#Engineerqualitytime
Basic 2 servo up/down circuit diagram.
The potentiometers are for analgogue control
The left hand switch allows for unidirectional digital control.
For more on this, arduino stuff and other daft things see the "Making weird stuff" blog
Arduino Workshop at iLab
Interaktive Werkstatt
School of Design Mainz, 2009
Workshop with Andreas Muxel
Photographs by Sandy Pfaff
Finally got the nerve, after my soldering class, to finish putting together the kit I got sooo long ago. It was easier than I thought.
Here you see the almost-final step of Lesson 3 in Ladyada's Arduino tutorial.
using a 2N2222 transistor to trigger the shutter, but I am not sure if I can get bulb mode with it. If not, a NO reed relay will get the job done.
Arduino Workshop at iLab
Interaktive Werkstatt
School of Design Mainz, 2009
Workshop with Andreas Muxel
Photographs by Sandy Pfaff
The takes me back to my day at Dartington College of Arts (long before the advertising industry got it's hands on me). I used to use a lot of letraset to make books and things. Come to think about it, that's how I got into advertising.
The XINO Arduino compatible board connected to an FTDI cable with a simple stripboard adapter.
Here is the layout for the stripboard FTDI adapter.
I was overjoyed to discover this page: openenergymonitor.org/emon/node/58
But if you look closely it seems like a bunch of Europeans enjoying the simplicity of their single-phase powered homes.
Then you'll find this link: www.desert-home.com/p/test-html-code.html
Where an American seems to have solved the two-phase problem.
And the sense is overall how easy this all really is.
Well, I tried. And after first losing precious vacation time after ordering non-invasive sensors (SCT-013-030) that were only the tiniest bit too small, I started work on the above assembly to match the system in the second link above. But the more closely I looked at the schematic the more confused I got.
After not much digging on the first link, though, I realized that the Europeans were using two analog pins on the Arduino to measure AC voltage and AC current (scaled down to something safe for humans/Arduinos).
Mr. American decided that he could take a short-cut and measure the current from both phases of his AC power together with one pin, and assume that the voltage on one phase was good enough for both phases. This is in my opinion a bad assumption for most americans (note lack of capitalization). Usually the circuits in a house are loaded very randomly with all manner of gadgetry and assuming that one phase is nearly identical to the other is just plain wrong.
If you look at the comments... Mr. American admits this. But his setup is "well balanced" and mostly 220V anyway.
By this point, though, I've run out of runway and have to put this aside for a while.
While I have two of the gadgets (pictured above, an SCT-016-000 Current Transformer (current output)) necessary to measure both phases of my power, I have zero AC to AC transformers necessary to measure the voltage of any phases. So I have to order those.
Then I have a decision to make about how best to use the available Arduino code to measure two phases as both the Europeans and Mr. American only really use one phase. My instinct is to have the code tick-tock back and forth between one phase and the other. I *could* set up two separate arduinos, but then I will need twice as much of some sort of logging or communication system.
I was planning to use an X-Bee. But I no realize that the X-Bee shield wouldn't necessarily work with the photo-sheild pictured above. But honestly, these circuits are very simple voltage dividers and I could probably just stick the little breadboard there on the X-Bee shield and lose the screw shield altogether (which was just because I didn't have any good wall-warts left for powering the Arduino itself but now I have time to order some with the rest of the crap I need).
Still, I feel like a really understand the problem/solution much better now. So maybe this really can happen in the near term.
Arduino Leonardo with Nokia5110 LCD, DHT11 temperature and humidity sensor, DS1307 RTC and DS18B20 temperature sensor
Small servo driver board for animatronics using Arduino and an Adafruit XBee adapter. Full tutorial here:
www.instructables.com/id/Arduino-animatronics-make-your-a...
Arduino HFDay Hardware Freedom Day 2013. wiki.hfday.org/2013/Argentina/La%20Plata/Equipo%20La%20Plata
Arduino Workshop at iLab
Interaktive Werkstatt
School of Design Mainz, 2009
Workshop with Andreas Muxel
Photographs by Sandy Pfaff
This is a fairly simple circut. If either wire connected to pins 2 or 3 are disconnected, then the light blinks slowly. If they are connected, then the led blinks crazily.
It is acting funny, and I don't know why. However, I'm feeling tired, so bed for now.
My cunning plan to get around the glitch in the alignment of the Arduino's digital pins -- uses in-line and right-angle headers in tandem to re-create the gap in a way that makes it possible to use standard 0.1" pitch perf board and mate it with an Arduino.
See the set