User:Caio/Unravel the code v

Week 1

Workshop

On the first workshop, I pair up with Sara to try to make an FM Transmitter using a breadboard.

We follow this tutorial How to make FM transmitter.

We were able to plug everything right, but we couldn't find the right tune to listening to the transmitter.

On the tutorial they gave us a formula to find out the right tune,

 L = [(d^2)(n^2)] / [18d + 40l]
 L – in uH (inductor)
 d – in inches (coil diameter)
 l – coil length in inches
 n – number of turns

But it didn't work as expected. The failed transmitter was exposed together with the other students work at the Radiation - Digital Craft exhibition.

Radio Projects

Architecture of Radio by Richard Vijgen

" The Architecture of Radio, a new exhibition by Dutch designer Richard Vijgen that uses an augmented reality iPad app to visualize the network of radio waves that surrounds us, revealing the invisible traffic of smartphones, GPS units, Wi-Fi routers, cell towers, overhead satellites, and more."

"As an information designer, I'm interested in visualizing things we cannot see. Most of the information we consume is 
 delivered to us over the air via radio waves . . . We are connected 24/7 through devices that communicate wirelessly 
 over Wi-Fi or cellular networks, yet contrary to the radio towers and transmission stations of the early days of radio, 
 the infrastructure that underpins our information society is barely visible. Wi-Fi routers are hidden behind bookshelves 
 and cell towers are mounted to existing buildings or disguised as trees."

Sequential Wave Imprinting Machine by Steve Mann

With the S.W.I.M. (Sequential Wave Imprinting Machine) you can see otherwise invisible sound waves and radio waves, imprinted onto your retina, onto photographic media, or eyeglass/camera.

This is due to something I call Phenomenological or Phenomenal Augmented Reality, i.e. the AR (Augmented Reality) of physical phenomena

You can find a tutorial of how to build one here

Tree Radio Installation at YSP

"This work addresses issues surrounding the rate that new digital technology often becomes out-of-date, as it uses 100 year old tried and tested wireless technology. I have been working at the intersection between art and technology and this project takes forward my current interests.

I wanted to make people think about trees and the root of all wireless technology: radio, and how simple and green it can be to use. Wireless, free and solar powered. The tree transmitter reveals the hidden facets of organic tree life using simple FM wireless technology."

Video of the Project

You can read more about this project here
and more Radio Projects at Radio Arts

---

---

Week 2

A look at RTL-SDR

We use the RTL device to try to receive some interesting signals on our computer. I personally found this way of find signals very difficult and not very precise. Difficult in the way that you need to expend a lot of time and patience to go through the channels waiting to see some signal, you also need to count with a little of lucky, because sometimes you pass by a channel but it's not being used by the time you were on it, so you consider it has nothing there.

Favorites on gqrx app (some of the channels where I found the following audios)

Audios

Playlist on Soundcloud

 https://soundcloud.com/caiovita/sets/rtl-sdr-audio-record/s-XCC3A

Mixed audio in photoshop

500px

File:RTL-SDR-CaioVita03.ogg

Experiment with Nina

Also on this week I did an experimentation with Nina, with the software MMSSTV, we use our computers to send some images from her computer to mine, through sound waves. I was thinking the same concept could be apply to radio. So we could have a transmitter sending the image converted to sound as wave signals, then anyone with a radio and a computer could listening to the station and receive the image on their screen.

---

Week 3

Imaginary Radio

Prism

Think of the radio wave as the same way as light. Mirrors reflect radio waves "Can I use a prism to affect radio waves? If yes, how can I use it in a creative way to experience radio waves?

Text a about how diffraction and reflection affects radio waves
How do diffraction gratings affect radio waves

How does prism affect the behaviour of a Radar device (Radio Detection and Ranging)?

Concept

My imaginary Radio uses prism to make an interference on the signal that it's capturing to create noise and translate to visuals.

---

Workshop MICA

A day of workshop with students fro MICA. I was on the group Post-Radio Aesthetics and was assigned to build the Transmiters together with Kate Smith.

Post-Radio Aesthetics

---

Q10 proposal

Using radio waves to create an image

My idea is to make a box that would work as a radio transmitter. I live just across a big church on a very busy street at Rotterdam. From my window I can project into the facade of the church. The box would be an installation at the street with some instructions of how to create the image. The signal would be similar to morse code, but with a color code. The person on the street can create an image that is 32 x 32 pixels. So they would have to send 32 color code trough the transmitter. The receiver for it would be a Arduino attached to the beamer that is being pointed at the church faced. The image will be create in real time by the person using the small box transmitter at the street. In the end they can choose to tweet their image, it would be twitter bot with the hashtag tweeting the images that were created through the morse code.