meeting at the kitchen_budapest
25. - 29.7.2011

participating
marci, michal, barb, chris, reni

the first days we spent looking into different
models of windclocks, that were pre-developed partially already and
we finalized two models of them.
one with four windflowers, magnets and a hall sensor. so that is a
quite easy model and easy to reproduce.
with 1 windflower we can already produce TIKs,
with four of them connected together via one arduino, we can probably also define orientation.

windflower protoype

the first of four is already connected and sending data.

here is the current list of components that we used for one.
- Windflower (which you can buy or build yourself :))
- 2 small earthmagnets
- TLE4905 Hall generator
- 2x 10nF capacitor
- 1.5Kohm resistor
- cables
- tape
- headerpin
- Arduino
- Ethernet shield wiznet chipset – power over ethernet is an own
adapter, that you have to buy separately!!

the second one follows up the idea that barb and stefanie had in one of
their windclock sessions in vienna, where they worked with stretch sensors
on a bedsheet.

bedsheet prototype

the five conductive-thread-lines are connected together, and can already be hung in the wind.

A short and uncomplete how-to:

sew a short line of conductive thread on a piece of laundry (if it is too long, it doesn't measure anymore! so take a voltmeter and measure the ohm!). take a piece of antistatic bag, make sure it conducts through and lay it on the conductive thread. Take another string of conductive thread and lay it on the plastic. make sure, that the end of the sewn thread is sticking out on top and the end of the other one is sticking out at the botom. fix that setup with tape. take wire and add it to each end of the conductive thread. take all the upper ends and connect them together - with a short added piece that goes to the 5V pin of the arduino.
measure with a voltmeter the amount of ohms. take a resistor of that size and add one end to the gnd of the arduino and the other end to one of the ends coming from the laundry. take as many resistors as you have endings.
basically finished. the arduino script for this setup will follow soon!!

the second thing we are dealing with here is a very technical thing,
as not every eth-shield for arduino is able to deal with the protocol.
so chris was looking into merging arduino libraries yesterday, to have
a possibility to work with older eth-shields as well. if you don't
know that, you might think it does not work.
we stopped that; maybe somebody else wants to look into this.

noTours
tik-notours
We started to try out and work with an android
application called no-tours. http://notours.org
it works with gps locations, where you can trigger sounds and therefore
create soundwalks through spaces.

on 27th we started the discussion on how to make actual time from
the arbitrary numbers we are receiving thru the java script so far.
just now at breakfast we had discussions on that and on time in
general, which does nothing else than to count up and up and up. so do
the windclocks. now it is just a question of finding dividers and
retrieving some 'time' from that.

Chris now started to work on a clock visualisation, which should be definitely finished by tomorrow.
So soon we can all retrieve real windclock time!!

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