IEEE - CAS Bangalore Chapter, India     CAS Chapter - Region 10
Institute of Electrical and Electronics Engineers - Circuits and Systems Society
Goals: To conduct seminars, workshops, and other events pertaining to all aspects of electronic circuits and systems

Event Reports - 2012
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December
Low-power, High-performance and Low-cost Embedded Systems using TI Embedded Processors and Analog
27 December, 2012
Cranes Varsity, Bannerghatta Main Road, Bangalore

C.P.Ravikumar A Workshop on "Low-Power, High-Performance and Low-cost Embedded Systems Using TI Embedded Processors and Analog" was delivered by Dr. C.P. Ravikumar, Technical Director of University Relations at Texas Instruments, India, Bangalore on December 27, 2012 in Cranes Varsity, Bannerghatta Main Road , Bangalore. The workshop was jointly organized by IEEE CAS Bangalore Chapter and TI India Technical University, Texas Instruments, Bangalore and Cranes Varsity, Bangalore. The speaker shared his knowledge on Embedded systems and how the efficient Embedded systems can be built.
Dr. C.P. Ravikumar, also the secretary of IEEE CAS Bangalore Chapter, welcomed the audience. He is presently the Technical Director of University Relations at Texas Instruments, India. He also leads the TI India Technical University which provides learning opportunities to employees of TI India. He is also an adjunct faculty at IIT Madras. He obtained his Ph.D. (Computer Engineering) from the University of Southern California (1991), M.E. in Computer Science with highest scores from Indian Institute of Science (1987) and B.E. in Electronics with a Gold Medal from Bangalore University (1983). He is a Senior Member of IEEE, honorary secretary of IEEE CAS Bangalore chapter which he founded, and was the honorary secretary of VLSI Society of India (2003-2011).
The speaker initiated the workshop by explaining the important aspects in building Embedded systems using efficient hardware and software design principles. He then talked about Texas Instruments embedded processors and analog integrated circuits which play a crucial role in the construction of efficient embedded systems. Embedded processors can be of three types digital signal processors, microcontrollers, and microprocessors. More recently, multi-core platforms which combine more than one type of these processors are also being introduced for certain markets. The speaker then explored the main categories of embedded processors from TI and at their typical end applications.
In the second half of workshop, he focused on analog integrated circuits. We need data converters, amplifiers, power management circuits, clocks and timers, and RF integrated circuits to build embedded systems. Finally he detailed "system design" and the salient skills that a student must acquire to be competitive in the domain of embedded systems.
More than 200 students participated in the workshop. The highly interactive generated considerable enthusiasm from the participants.

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Seminar on Advance Photovoltaic Power Conversion Systems
19 December, 2012
Texas Instruments India, Bangalore
Report by C.P.Ravikumar

A seminar on "Advance Photovoltaic Power Conversion Systems" was delivered by Prof. Prasad N. Enjeti of Texas A&M University, College Town, Texas, on December 19, 2012 in Bangalore. The seminar was jointly organized by IEEE CAS Bangalore Chapter and TI India Technical University, Texas Instruments, Bangalore. The speaker shared his research work on photovoltaic systems and how the efficiency of existing photovoltaic systems can be increased.
Dr. C.P. Ravikumar, secretary of IEEE CAS Bangalore Chapter, welcomed the audience and introduced the speaker. Prof. Prasad Enjeti is the fellow of IEEE and is a professor of Electrical Engineering at TAMU. His is a well known name in the field of power electronics. His presentation first explored the design of a smart photovoltaic (PV) module - a PV module in which PV cells are electrically grouped to form a pixel and are connected to dc-dc converter blocks which reside embedded in the back pane of the module. An auto-connected flyback converter topology processing less than full power is used to provide maximum power point tracking (MPPT). Such a concept is ideal for curved surfaces such as building integrated PV (BIPV) system applications, where gradients of insulation and temperature cause not only variations from PV module-to-PV module but from group-to-group of cells within the module itself.
Power conversion concepts for large scale PV systems and their utility interface via medium frequency transformer isolation were also explained. Finally, a power sharing converter that accepts multiple renewable sources to interface to the electric grid was explained.
Around 30 employees participated in the seminar. The highly interactive generated considerable enthusiasm in the participants. The seminar ended with a "Vote of Thanks" by Dr. C.P. Ravikumar, secretary of the IEEE CAS Bangalore Chapter.
The audience gave excellent feedback for the seminar. "The seminar was simple to understand and provided exposure to wide variety of power converter topologies," said one of the participants. Another participant said that the seminar provided a good overview of the latest developments in solar power conversion and was thought-provoking. "As an application engineer in power electronics, I found this session informative and thought-provoking," added one engineer.

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June
6-day Modular workshop on Embedded Linux on Beagle board
6th to 13th June 2012
Cambridge Institute of Technology, Bangalore
Report by C.P.Ravikumar

Prof. Mark Yoder (Rose-Hullman Institute of Technology, USA) IEEE CAS Bangalore Chapter, in association with Texas Instruments, Cambridge Institiute of Technology, and Cranes Software Internation Ltd, conducted a Six-day hands-on modular workshop on Embedded Linux on Beagleboard.
The workshop was inaugurated on June 6 by Dr. B G Prasad, Head of the Department of Computer Science and Engineering, BNMIT. He expressed his happiness over the learning opportunity provided by such a hands-on workshop. The inaugural function was presided over by Dr. C P Ravikumar, Honorary Secretary of IEEE CAS Bangalore Chapter. He talked about the importance of system-level electronic design. Prof. Ravishankar, Principal of CiTech and Mr. D.K. Mohan, Chairman, CiTech, spoke at the inauguration and welcomed the participants. "CiTech was honored to host a workshop on Beagle board at college premises," said Prof. Ravishankar. Mr. Mohan expressed his happiness about the emphasis on hands-on training in the workshop. Ms Nageswari Srinivasan of Texas Instruments, India, delivered the inaugural address and emphasized the importance of open source hardware and software platforms.

Module 1 (June 6-8, 2012)
The first module of the workshop focused on the prerequisites required for understanding the concepts of Embedded Linux. Mr. Vishwa Kiran, Asst. Professor at CiTech, covered the following topics — Linux System Programming, Linux Internals, development tools and Introduction to Device Drivers in the PC environment. Mr. Jayaramudu, Senior Product Engineer at Cranes Software International Ltd., provided an introduction to Beagle board, Sysfs, GPIO, and building the root file system. Mr. Vaibhav Bedia, Senior Software Design Engineer at Texas Instruments, conducted a session on Itroduction to Embedded Systems and TIs OMAP architecture. He also covered aspects of audio drivers for Beagle board.
Module 2 (June 11-13, 2012)
Prof. Mark A Yoder of Rose- Hullman Institute of Technology, Indiana, USA, conducted the second module on "Embedded Linux on Beagleboard." In his hands-on training, he covered the aspects of configuring and building applications on Beagle Board. He demonstrated the use of SPI and I2C peripherals. He explained how to use the DSP core on OMAP/Beagle Processor using c6run. One of the main takeaways for the participants was getting acquainted with ALSA audio driver and rendering live audio data in histogram form on a web server.

The workshop was attended by 34 paritcipants. The participants received participation certificates in a brief valedictory ceremony held on June 13, 2012. The feedback from the participants has been very positive. A number of student participants expressed their interest in working on projects based on Beagle Board. "It was a very good exposure on Embedded Linux and the Beagleboard. My intention is to see if I can use the Beagleboard in some live projects in my organization," said N. Kavitha of STEPS Knowledge Services, a participant. Prof. Rathna of Indian Institute of Science thanked the organizers for bringing this workshop to Bangalore. "The enthusiasm level of the participants was very high. There were days when we arrived at 8.00am and stayed until 7.00pm completing our hands-on tasks. I learnt a lot during this workshop," she said.

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April - May
Take Off with MSP430 LaunchPad A Self-Learning Hands-on Lab
April 28, May 5, May 12, May 19, 2012
Texas Instruments India, Bangalore
Report by C.P.Ravikumar

Take Off with MSP430 LaunchPad In association with IEEE CAS Bangalore Chapter, UniTI (TI India University program) conducted a four-day workshop entitled Take off with LaunchPad - A Self-Learning Hands-on Lab.

The workshop was held at Texas Instruments campus, and was spread over a period of four Saturdays namely, April 28, May 5, May 12 and May 19. There were 16 participants from different universities of India. The workshop was inaugurated by Dr. CP Ravikumar, Texas Instruments, who is the honorary secretary of IEEE CAS Bangalore chapter. He provided an overview of the topic of embedded systems and microcontrollers and emphasized on the concept of self-learning.

Ms. Kavitha (STEPS Knowledge Services) addressed the participants on the topic of MSP430 microcontroller on April 28, 2012. The participants were given a MSP430 Launchpad and printed course material. The workshop was characterized by both theoretical sessions as well the Hands-on experience thus enabling the students to learn things in a more efficient way. Each day the participants were given a design problem to work upon, which covered all the important concepts of their days learning.

The first day of the workshop focused on the Basics of the MSP430 microcontroller, the LaunchPad kit, the software platform Code Composer Studio, watching introductory videos on MSP430 and Launchpad, the MSP architecture and some basic programming using the on-board LEDs and timers. On the second and the third day of the workshop, the participants were introduced to the basics of various peripherals of the MSP430 Launchpad like timers, Serial communication and Analog to Digital Converter; the hands-on sessions covered both the simple operation of each peripheral as well as the design examples. Also there was a brief demo of the different Booster packs that can be used with Launchpad to carry out different tasks. On the last day of the workshop, the participants were grouped in batches and were given a design challenge, wherein they were asked to implement a simple game using the Launchpad.

The participants were given course completion certificates. Participants were also given Launchpads to pursue projects on MSP430 Launchpad in future.

Feedback from our participants

  • "The idea of self learning and the content prepared for it was really good."
  • "The event is well organized and the modules are very helpful to understand the MSP430 LaunchPad."

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March
Take Off with MSP430 LaunchPad A Self-Learning Hands-on Lab
March 10-31, 2012
Texas Instruments India, Bangalore
Report by C.P.Ravikumar

C.P.Ravikumar (TI India) In association with IEEE CAS Bangalore Chapter, UniTI (TI India University program) conducted a four-day workshop "Take off with LaunchPad". The workshop was held at Texas Instruments India, Bangalore campus, and was spread over a period of four Saturdays starting from March 10, March 17, March 23 and March 31. The workshop was inaugurated by Dr. CP Ravikumar, Texas Instruments, who is the honorary secretary of IEEE CAS Bangalore chapter. He emphasized on the self-learning concept and introduced the participants to the different microcontroller families offered by Texas Instruments, including MSP430. Mr. Ramakrishna Reddy (MCU Design Engineer, Texas Instruments) addressed the participants on the topic of MSP430 microcontroller on March 31, 2012.

There were 20 participants from different universities of India. The participants were given a MSP430 Launchpad and printed course material. The workshop was characterized by both theoretical sessions as well the Hands-on experience thus enabling the students to learn things in a more efficient way. Each day the participants were given a design problem to work upon, which covered all the important concepts of their days learning.

The first day of the workshop focused on the Basics of the MSP430 microcontroller, the LaunchPad kit, the software platform Code Composer Studio, watching introductory videos on MSP430 and Launchpad, the MSP architecture and some basic programming using the on-board LEDs and timers. On the second and the third day of the workshop, the participants were introduced to the basics of various peripherals of the MSP430 Launchpad like timers, Serial communication and Analog to Digital Converter; the hands-on sessions covered both the simple operation of each peripheral as well as the design examples. Also there was a brief demo of the different Booster packs that can be used with Launchpad to carry out different tasks. On the last day of the workshop, the participants were grouped in batches and were given a design challenge, wherein they were asked to implement a simple game using the Launchpad.

The participants were given course completion certificates. Participants were also given Launchpads to pursue projects on MSP430 Launchpad in future.

Feedback from our participants

  • "The hands-on lab sessions were very good and the course modules that were provided were helpful."
  • "Inclusion of design programs helps to widen our capability and to better understand the architecture of the product."

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February
Seminar on Analog to Digital in a Few Simple Steps - A Guide to Designing with SAR ADCs
16th February 2012
Texas Instruments India, Bangalore
Report by C.P.Ravikumar

Tom Hendrick (TI Dallas) In cooperation with IEEE Circuits and Systems Bangalore Chapter, PragaTI (TI India Technical University) conducted the seminar entitled "Analog to Digital in a Few Simple Steps - A Guide to Designing with SAR ADCs" on 16 Februrary 2012 at the TI India campus. Successive Approximation Register based Analog to Digital Converters (SAR converters) are popularly used in electronic systems. The speaker Tom Hendrick (Systems Engineer, TI Dallas) discussed system design issues when using SAR converters. He spoke in-depth covering Block diagram and equivalent circuit of SAR Converters; Sampling and Conversion process; Voltage Ripple at ADC input; Settling time of the ADC; Considerations of filter and filter driver at ADC input; System design considerations and design example, and Noise considerations.
Tom has designed a wide variety of evaluation modules for use in motor control applications, and is a system engineer in the Data Acquisition Products Group at Texas Instruments, Dallas
Over 60 participants attended the seminar of which 25 were IEEE members. Refreshments were served at the end of the program.

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Seminar on Photodiode Noise Calculation, Measurement, and Simulation
9th February 2012
Texas Instruments India, Bangalore
Report by C.P.Ravikumar

Arthur A.Kay, Texas Instruments The seminar was organized by PragaTI (TI India Technical University), in association with IEEE CAS Bangalore Chapter at Texas Instruments, Bangalore campus. Arthur A. Kay was the invited speaker. He is an Applications Engineering Manager at TI India, and specializes in the support of sensor signal conditioning devices, and industrial applications.
Arthur Kay focused on analysis, measurement, and simulation of photodiode noise. As measurement of photodiode amplifiers can be challenging because noise levels approach equipment capability, the speaker covered the methods for boosting the performance of standard test equipment to allow measurement of low noise devices
The seminar was open to all IEEE members and non-members. We had about 30 participants, including about 10 IEEE members. Refreshments were served after the seminar.

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