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Workshop Proposal for Pd con 2011 in Weimar | |||
ATMEL AVR workshop | |||
Instructor: Chikashi Miyama | |||
Why AVR ? | |||
Arduino is nowadays almost the de-facto standard. Many electronic instrument builders and installation | |||
artists employ it for there works. It is easy to use and helpful for prototyping. However, if you want to make | |||
100 copies of your work or if you plan to create a large work involving many micro-controllers. Arduino is | |||
probably not the best choice; it is too expensive and sometimes takes too much space in your hardware / | |||
installations. | |||
Arduino consists of several parts. a USB socket, a crystal, a | |||
regulator, an ISP socket, a USB-serial chip, several capacitors, | |||
and ATMEL AVR Micro controller ATMega328PU. The Arduino | |||
UNO board costs around 34$. What do you think is the most | |||
expensive component on this board? It is obviously the micro | |||
controller. However, it actually costs around 3 - 4$. | |||
Though Arduino facilitates many things by offering USB slot and | |||
power jack, these connectors are not necessary for all projects. | |||
Furthermore, Arduino conceals many potentials of ATMEL AVR | |||
chip. For example, you can actually use faster crystals than 16 | |||
Mhz (up to 20Mhz ) but Arduino restricts it by putting 16Mhz | |||
crystal on the board.1 | |||
This workshop is for people who want to open the hood of Arduino and fully utilize the features of ATMEL | |||
AVR chips. I will introduces how to program the AVR chip directly using C language, demonstrates many | |||
possible artistic applications of the chip, and practice to build/program a basic AVR-based device with | |||
participants. Participants donʼt have to buy anything expensive for starting AVR programming. They can | |||
actually use their Arduino as the writer of the AVR chip! | |||
ATMEL AVR ATMega 88 | |||
Though there are more than 100 variant of ATMEL AVR microcontroller. http://www2.atmel.com/ | |||
The workshop focuses on ATMEL AVR ATMega 88 PDIP. It costs around 3$ and available all over the | |||
world. It offers 131 powerful instructions, on-chip multiplier, 6 PWM channels, 6 10 bit ADC, SPI bus, and | |||
various timers. It runs maximum 20 Mhz with an external crystal. | |||
Refer http://www.atmel.com/dyn/resources/prod_documents/2545S.pdf for further specification. | |||
1 | |||
Probably because they are using firmware based USB connection using second ATMEL chip on the board. | |||
What workshop covers | |||
AVR chip offers very many functions and it is impossible to cover | |||
everything in limited time. So I would like to separate my workshop into | |||
two parts; demonstration and practice. The workshop is going to be | |||
around 3-4 hours. | |||
I. DEMONSTRATION (90 minutes) | |||
In this section, I will introduce basic specification, procedure of AVR | |||
programming, and various applications of the chip by showing different | |||
pre-built circuit based on the AVR chip. | |||
1. Overall information of the chip | |||
! - Where you can buy chip | |||
" - Price / model list | |||
" - Basic specification of the chip | |||
2. How to program AVR chip on Mac and Linux | |||
! - How to use avrgcc and avrdude | |||
" - Commercial Writer AVR ISP MK II - 34$ (Fig.1) | |||
" - Handmade Writer USB ASP (Fig.2) | |||
" - Using Arduino as AVR writer | |||
" (http://arduino.cc/en/Tutorial/ArduinoISP) | |||
3. Applications | |||
! - How to create LED flasher | |||
" - How to create MIDI message generator | |||
" - How to create Potentiometer to MIDI device by using built-in ADC | |||
" - How to send serial (UART) messages from the chip and receive them in Pd | |||
" - How to use USB message without any other device (V-USB 2) | |||
" - How to use timers | |||
" - How to use PWM and create sound with it | |||
" - How to establish SPI connection in order to access external memory, ADC etc. | |||
" - How to create AVR programmer by yourself | |||
" - All source codes and schematics will be uploaded online so that the participants | |||
" are able to download and utilize them later | |||
II. PRACTICE (90 - 120 minutes / depending on the number of participants and competence ) | |||
In this section participants will make a basic hardware using AVR microcontroller. | |||
Possibly, 6 channel MIDI or USB-based digital controller based on gnusb by anyma http://www.anyma.ch/ | |||
research/gnusb/ This part is dependent of the facilities of the venue and available components in | |||
Germany. | |||
Prerequisites | |||
• Basic knowledge of C language and unix commands are preferred | |||
• Basic soldering technique and knowledge of electronic circuit are preferred | |||
• The AVR programmer runs on Linux, Mac, and Win. I will use linux or Mac for the workshop. | |||
2 | |||
http://www.obdev.at/products/vusb/index.html V-USB project firmware based USB device using AVR | |||
fig.1 | |||
fig.2 | |||
Bio of instructor | |||
Chikashi Miyama is a composer, video artist, interface designer, and performer. He received his MA | |||
(2004) from Kunitachi College of Music, Tokyo, Japan, and Nachdiplom (2007) from Music academy of | |||
Basel, Switzerland. He is currently attending the State University of New York at Buffalo for his ph.D, and | |||
teaching electronic music as a TA. He has studied under Takayuki Rai, Georg Friedrich Haas, Jacob | |||
Ulmann, Erik Oña, and Cort Lippe. His compositions have received a second prize in SEAMUS | |||
commission competition (2010/St. Cloud, USA), a special prize in Destellos Competition (2009/ | |||
Argentina), and a honorable mention in the Residence Prize section of the Bourges Electroacoustic Music | |||
Competition (2002/France). In addition, he was selected for SUNY chancellor's award (2011/USA). His | |||
works and papers have been accepted by ICMC ten times, by NIME four times, and selected by various | |||
international festivals in more than 100 times in 17 countries, such as Mix, Re:New (Denmark), Musica | |||
Viva (Portugal), Espace sonore, dBâle, SHIFT (Switzerland), Next generation (Germany), Agora | |||
Resonance, Scrime (France), Lica-Mantis (UK), June in Buffalo, NWEAMO, SPARK, NYCEMF, SEAMUS | |||
(USA), Sonoimágenes (Argentina), SuperCollider symposium, Pdcon, and Dorkbot meeting. He is going | |||
to move to Karlsruhe and work at IMA, ZKM as a guest researcher in 2011 and 2012 taking advantage of | |||
DAAD scholarship. | |||
Relevant workshops held by the instructor | |||
June 2-4 2008 "" Qgo-AVR workshop at Kunstraum Walcheturm, Zurich, Switzerland | |||
" " " Organized by SGMK (Schweiz Gesellschaft für Mechatronische Kunst) | |||
Oct 31- Nov2 2007" Sensor-Instrument DIY workshop, Zurich, Switzerland | |||
" " " Organized by SGMK (Schweiz Gesellschaft für Mechatronische Kunst) | |||
Relevant conference peer reviewed paper | |||
Peacock : a non-haptic 3D performance interface | |||
http://chikashi.net/detail/download?file=43doc.pdf | |||
This project utilizes AVR micro controller. |
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