Spatialized Umbrella v01

This is my first prototype of the Spatialized Umbrella.

The Spatialized Umbrella project offers an entirely new dimension to walking in the rain. Using light and sound spatialization this umbrella creates an immersive, mobile, and highly personal multi‐sensory environment.  Range sensing technology helps the Spatialized Umbrella react to your movement through a space.

5 speakers and LEDs are mounted inside of the umbrella, around the users’ head, allowing for sound and light spatialization.  The ‘raindrop’ samples play in a loop, each speaker playing their own unique raindrop. The LEDs light up the speaker playing at that moment. The tempo of the loop is controlled by a long-range Sharp Infrared range finder.  The closer an object is to you, the faster the loop plays. If an object is close enough and a threshold is reached, a lightning sequence is triggered. Best part: COMPLETELY SAFE FOR USE IN THE RAIN.

This video is actually an early version of the code, and I apologize for not using a microphone INSIDE the umbrella (it’s hard to hear the ‘raindrop’ sounds). New video soon.
[youtube]http://www.youtube.com/watch?v=jrr8VzQxBVQ[/youtube]

The most time consuming part of the project was in soldering the PCB i used (i wanted it to be small to fit at the top, so the entire arduino did not make sense). I designed my own “mapduino” circuit and used an IC socket for the ATMega168 chip to sit in on the PCB. This way i can just pop the chip out and replace it with another I have reprogrammed on an Arduino. Rigging the umbrella also took a little while.

***ALL SOUND IS MADE USING ONLY AN ARDUINO AND 8OHM SPEAKERS:: lookup tables store values for waveshaping, which is output directly from Digital Pins from the ATmega chip. See the current version of the code, which can be found HERE.

still to do: linearize the IR data so that there is a more even rate of change in the tempo. When I began, I also had the thought to use an accelerometer, to measure the direction of movement. BUT, I have been successful tonight in reading data from a digital compass sensor, which can give me degrees of rotation — like say if the user spins the umbrella, i could have the sound/light spin around the users head in that direction, at that speed. This is much more interesting data than an accelerometer, in my opinion.

>> UPDATE :: Featured on HackaDay.com and ArduinoShow.com and CoolCircuit.com !!

monome 40h kit

today, i assembled my monome 40h kit! it’s essentially the same as a 64, but comes in kit form – 2 PCBs and all the pieces that need to go on it – ATmega chip, shift registers, FTDI serial to USB, button pads, etc. The only thing it doesn’t come with is LEDs. These you must find on your own. I ordered these from LEDShoppe, and so far i’m not extremely impressed with their consistency (brightness) from bulb to bulb. However, the color is beautiful (violet).  I failed to realize this while constructing her, but the LEDs are in fact all UV Blacklight LEDs, which is kind of cool — not really something I am into, but once i finish construction of the enclosure w/sensors, I will probably sell this monome and I think the UV aspect will be appealing to others.

It took me about 2.5 / 3 hours total, at which point i plugged her in, to discover that one LED was burnt out, and entire row would not respond to button presses. It took me a while to de-solder and remove the dead LED and replace it, but i did, and it works. the row, however, i believe is a circuit problem, and I’m waiting to hear back from Brian Crabtree (inventor of monome) to see what’s up. other than that, it works great, and looks great. The hardest part of the process was soldering 64 surface mount diodes on the button pad PCB. I didn’t expect to have to do anything that tiny. Luckily I got a Weller soldering iron and a couple 0.8mm tips. nothing beats a fresh tip. here are some more images from the process.

__________ the 40h comes with 4 ANALOG inputs that are just waiting to be sensorized. I am considering a capacitance touch sensor, or possibly an IR rangefinder, or maybe even just a potentiometer(s) to have some knobs. the most common is an accelerometer, so that the monome has tilt control. My 64 has this, so i probably will not do that. I still have to build an enclosure (obviously) and what sensors i choose to install will determine what the enclosure looks like. i’m excited.

soldering workshop

This weekend, Joel Murphy, my physical computing teacher, held a soldering workshop at the 10 floor DT lab at school.  We built 555 timer circuits, able to control up to 220volt anythings (lights, motors, etc.)

Schematic

555_timer_circuit

Pin three on the right side is the important part – it is raising and then sinking a voltage at an adjustable rate, which is what operates as the switch.  Two power relays (which can handle up to 220volts) are then attached to the PNP/NPN section, which is what you connect any apparatus to (robot arms, vacuum cleaners etc).

We started by building the circuit on a breadboard, which was met with instant success, everyone had theirs working within the first hour of the workshop.  Then the real work came when we had to design and furbish our own PCB boards for permanent implementation of the circuit.

This got extremely tedious, and real frustrating.  Nick and I left after working on it for 5 hours, our circuits not functioning at all.

Somehow, I perservered, and returned on sunday (yeah, sunday) and fixed my circuit!  Nick is jealz0r.

top of finished PCB
top of finished PCB
bottom of PCB board - thats all solder and stripped wire
slop solder city. bottom of PCB board
Nick; before reaching the point of utter frustration and humility
Nick; before reaching the point of utter frustration and humility
nick, joel, claudio, and dan from the left
nick, joel, claudio, and dan from the left

In this vid, you can see the soldered mess I made on the underside of the PCB board, and all of the components on top. So, so, so sloppy, Joel doesn’t have any faith in my completing any of the ridiculous projects I have proposed for the rest of the semester and beyond. It’s ok, I’ll show him.

[youtube=http://www.youtube.com/watch?v=-vdYgTjWd94]

Only thing left is to include the on/off switch in the project box enclosure, as well as terminals for the power relays to connect to the robot eyes / traffic lights i’m going to control with this beast.