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touch but works like a keyboard encoder under the hood so you can test the software by using the keys a s d left arrow down arrow and right arrow each mapped to a different color things get more interesting when you start to count how many participants are grounded at once what happens if two or three people connect to ground at the same time either directly or through one another as a proxy i programmed special behaviors for these situations from 2 6 people grounding at once two people causes colors to merge into one ring three causes the tessellation to break apart and reform 4 is a more aggressive explosion 5 shows participants through a webcam view etc the additional behaviors help encourage participants to physically connect in different ways ofxtessellation builder came together rather quickly due to some simple magic that helped to make it more interactive simple magic for relational art try doubling your sensors detecting heartrate how does the experience change when two people can compare heart rate directly leverage emergence through simulation ofxtessellationbuilder uses a 2d physics engine to simulate forces collisions and complex behavior i was delighted to see one ring orbiting a larger mass of rings as i had not planned for anything like this use multiple inputs in combination having the software respond to different combinations of the 6 keystrokes allows for very complex interactions use bright colors this came up throughout the betascape conference bright colors are magical and people enjoy interacting with colorful experiences simplify technology the makey makey s keystroke behavior made it very fast to test software and handle input i used keypressed events rather than parsing arduino serial data museums routinely use keyboard encoders in kiosks and interactives because they are easy to maintain troubleshoot and simulate w a regular computer keyboard for software testing the arduino orchestra the first day of our workshop was exploratory with demos discussions and brainstorming around relational art ideas we tinkered with sensors discussed inputs and outputs and visioned ways to make experiences more collective for the second day we wanted to focus and build something collaboratively based on our explorations the resulting vision was to create an arduino theramin orchestra using range finders and piezo speakers here s a time lapse video of day two showing the physical computing lab jamming on soldering speakers programming arduinos and playing custom microcontroller based musical instruments kawan posted the rangefinder code for the arduino theramin which was tweaked for our workshop by amy lee thanks check out our collaborative notes for the workshop here http typewith me p betascape 2012 arduino based theramin with range finder by not_rollergirl thanks a million to everyone who made betascape possible and totally magical especially matt forr and heather sarkissian creating museum media for everyone developing diy toolkits for ud and udl posted on june 23 2012 by keith simmons in may 2012 the museum of science in boston hosted the 2012 creating museum media for everyone workshop to develop tools and strategies for universal design ud and universal design for learning udl the first two days featured talks and demonstrations from experts on creating inclusive museum environments and building engaging interactive experiences for visitors with a wide range of disabilities for the rest of the week researchers accessibility experts designers and creative programmers worked together in four teams to prototype a dynamic haptic interface for exploring graphs gesture based descriptive audio layers for multitouch surfaces a physical interface for exploring graphs via data sonification and strategies for personalizing exhibit and museum experiences to increase accessibility here are some of the outcomes from the workshop which show the power of collaboration in rapid prototyping the following demo shows how a user might explore a graph via touch and sound through a physical sonification interface two axes move above a tactile graph which produces sound to represent data a similar haptic interface was created with vibration instead of sound to represent data points on a two dimensional graph haptic graph exploration tool touch tables offer interesting accessibility challenges in a shared interactive space like a museum this prototype uses an audio puck to allow users to explore a multitouch surface with touch sound and vibration touch table with haptic fiduciary markers the workshop has created some powerful momentum within the accessibility and museum communities i had the pleasure of working with sina bahram a doctoral student from north carolina state university on the sonification prototype sina has since developed a mobile device platform for exploring astronomy data through touch and sound as seen in this demo created for the 2012 transit of venus across the sun some of the ideas represented in the cmme workshop have already made their way into new exhibit designs at the museum of science more links as tools resources are shared publicly etching glass using vinyl stencils posted on april 29 2012 by keith simmons i ve been using my vinyl cutter recently to create custom glass etchings vinyl resists the acids in glass etching cream making it perfect for high resolution stenciling the cream i use is can be found here i picked some up at a michael s craft store you ll want to be careful and read the full material safety data sheet for armour etch you can etch most glass but not pyrex borosilicate the results are pretty neat coaster with an etched crane to start the process you ll need to create a vinyl cut and apply it to your glass applying the vinyl negative now put on your gloves seriously and paint on some etching cream i also use an exhaust fan in a nearby window for added safety paint on your etching cream and wait after about 5 minutes i rinse off the etching cream the msds mentions that baking soda can help neutralize some of the acids you ll want to flush everything with lots of water here s the final result final result of vinyl resisted glass etch more photos via flickr http flic kr s ahsjz5247h zurich bog s carnivorous plants posted on june 8 2011 by keith simmons zurich bog an advanced sphagnum bog or peatland in upstate new york was given to the bergen swamp preservation society for preservation on december 10 1957 by lyman stuart and the newark school district over 50 years later the bog supports a cornucopia of native plant species including carnivorous sundews drosera rotundiflora and purple pitcher plants sarracenia purpurea i had the pleasure of hiking the bog on april 30th 2011 with environmental scientist valerie george as a guide and my girlfriend meaghan boyle non carnivorous plants you might find in the bog include water willow highbush blueberry mountain holly black huckleberry small cranberry and several species of orchids johnson 234 i captured the following two images of the bog s carnivores soon after the last frost in the area and before anything had begun flowering drosera rotundifolia in the zurich bog the species of sundew above was made famous by charles darwin s tireless and hideous experiments upon it d amato 136 it captures insects with its sticky glue like dew and tentacles that slowly wrap around the prey as it struggles sarracenia purpurea in the zurich bog the purple pitcher plant above is one of the american pitcher plants which is a different genus than the tropical pitcher plants nepenthes the collar of the purple pitchers are covered in bristly downward pointing haris insects often cling to and slip from these hairs which are wet with nectar d amato 75 according to valerie early june is the best time to observe the purple pitcher plants in flower definitely check it out if you are near upstate ny and hike with respect in these fragile peatlands works cited d amato peter the savage garden cultivating carnivorous plants ten speed press 1998 print johnson charles bogs of the northeast university press of new england 1985 print pygmy sundew propagation by gemmae posted on april 28 2011 by keith simmons i recently ordered a number of carnivorous plants from cook s carnivorous plants as well as cp jungle one of those plants was a pygmy sundew drosera scorpioides i wasn t sure what was going on with the top of the plant at first was it flowering it was actually producing gemmae or brood bodies that may be propagated asexually these are modified leaves that break free in the wild when struck by rain and they each contain an exact clone of the parent plant here is a 2 5 minute video showing my process for propagating my new drosera scorpioides from gemmae this is the plant the same day it was received from cook s carnivorous plants drosera scorpioides a pygmy sundew i fed my plant a moth 2 days before removing about 5 of the gemmae 2 of which you see in the video above for the morbidly curious the video of the moth being enveloped by the sundew tentacles is below after about 30 seconds the footage is sped up to 2000 although you ll still probably want to skip forward as there is a lot of footage notice there are a few more gemmae on the plant in this video kinect blender 3d scene reconstruction posted on april 7 2011 by keith simmons one of my current projects is to find a cheap and accurate way to 3d scan faces for the creation of custom coins and memorabilia mostly i want my face on a 3d printable coin which can then be cast more cheaply in metal i had the opportunity to borrow a microsoft kinect which has 2 cameras and a structured light infrared laser projector one camera captures the infrared laser grid as projected into the room and constructs a depth map in realtime of the entire view the other camera captures visible light e g normal images and video i used the kinect to capture images and depth maps and reconstructed the scene in 3d using blender to dump the data i used libfreenect s record program part of the openkinect project here s is a camera panning animation of the result created in blender using a displacement modifier on a heavily subdivided plane this is the unedited depth map that i took from the record program output kinect depth map produced by libfreenect s record utility i had to scale and move the corresponding image texture to fit the geometry properly this is partly due to the slight distance between the cameras here is the slightly altered texture image captured by the kinect kinect image captured using libfreenect s record utility and slightly edited in gimp to align this is the depth data as determined by blender s ambient occlusion rendering blender render showing depth via ambient occlusion i will soon compare these results to the free version of david laserscanner i m currently waiting on the arrival of a very cheap laser line module 2 50 to be exact that will be used in conjunction with a high def camera as input to the david laserscanning software stay tuned update i ve attached the blend file for exploring in blender textures are embedded blender 2 56 beta or later is recommended the open dream journal clip posted on april 1 2011 by keith simmons i have wanted to design a simple notebook clip with an led light for use on a dream journal for quite some time now writing down dreams at night is difficult without a very convenient light source now with access to a makerbot 3d printer at sprout studios i ve released an open dream clip design on thingiverse an online database of freely available and printable 3d models my design uses an led and cr2032 battery components commonly available at hackerspaces that would have 3d printers and radioshack although the parts are cheaper online through sites like digikey and mouser here is the dream journal clip in action dream journal clip with a white led the first revision is pretty rough and we had to use tape on it to make it work dream journal clip with a red led here is the makerbot that jimmie rodgers kindly tuned and used to print the first test makerbot at sprout planned improvements include using less plastic making a larger hole for seating the led making a larger and deeper battery slot adding a plastic tab to hold the battery in place instead of tape download the source files for the open dream clip on thingiverse and keep an eye out for improvements shortly food in the city and subirrigation posted on february 24 2011 by keith simmons i was recently invited by shaunalynn of sprout co to speak at the food in the city spaghetti dinner about my experience with subirrigated gardening subirrigated gardening is a way of growing plants that conserves water preserves fertilizer and simplifies watering i regularly consult the inside urban green blog for information on subirrigation which is authored by bob hyland founder of the center for urban greenscaping and the definitive subirrigation guru other topics for the evening included raising chickens sam katz christy on his somerville yogurt co op tai dinnan from groundwork somerville on maple tree tapping and syrup making and mike nagle on window farming in urban areas live illustrations were created by isaac bell during the talks which reflected the topics at hand i ve been interested in making my own yogurt for some time now and learned a lot about the process as sam fielded an array of questions from the crowd the co op operates from the industrial kitchen of the clarendon hill presbyterian church and sources milk regionally from crescent ridge dairy crescent ridge dairy delivers in glass containers which helps reduce plastic waste when making yogurt in large batches sam s simultaneous consideration for the environment and community was inspiring sam katz christy fields questions about yogurt making and running a co op photo by meaghan boyle my talk reviewed the principles of subirrigation including 2 liter soda bottle designs and larger planter designs based on corrugated drain pipe which are more suitable for growing vegetables the planter below was built from a 3 liter bottle and housed a couple of happy basil plants herbs do very well in these 2 and 3 liter designs a 3 liter planter that i built to grow basil photo by meaghan boyle for growing tomatoes and peppers the corrugated pipe planter designs are the easiest and most reliable to build below is a section of the corrugated and perforated pipe cut to fit in the bottom of the clear container shown to the right of me i would use this planter to grow one tomato plant or two pepper plants clear containers allow you to observe water levels without detriment to the plant showing off corrugated and perforated drain pipe for building planters photo by meaghan boyle there was a great turnout for the talks the picture below by chris connors shows a small fragment of the assembled crowd i really enjoy hanging out after talks at hackerspaces to meet new people with similar interests the crowd...