Posts Tagged ‘NERP’

NERP – FPGAOK

FPGA1

FPGA2

I’ve heard a lot of positive feedback from the NERP FPGA workshop we did a couple weeks back.  There were a few people who asked me to post the Verilog code that went along with the two demos we did.  I added comments to the Verilog files in an attempt to clear up a lot of the stuff we cruised through to avoid turning this purely into a Verilog class.  The most useful comments will be in the VGA controller module we wrote: vga640x480.v.  Anyway, all the required project files to synthesize the logic we wrote are right here:  NERP_demo.zip

The software we used to build everything is the Xilinx ISE WebPACK 13.4.  You have to register with Xilinx and generate/download a license on their website to use the software.  Just remember that the above project will only work on the Digilent Nexys2-1200 board that I was using.

If you’re interested in grabbing a budget board for messing around with FPGAs or CPLDs, there are a few notable options:

  1. Papilio One
  2. CoolRunner-II
  3. DE0-Nano
  4. Basys2
  5. XuLA-200
  6. BORA

Also, thanks to Drew Fustini for the lovely photos you ‘re seeing above.  Actually, this whole FPGA thing was Drew’s idea.  So, if you were really itching to do some Raspberry Pi that week and walked in to find a bunch of nerds talking about programmable logic gates, then all your blame should be focused towards him.  On the other hand, if you enjoyed this FPGA crash-course you should thank him for that and any subsequent class/workshop he forces me to do.

MORE PHOTOS HERE

12

04 2013

NERP tonight! Eric Stein: RPi hardware i/o and ZeroMQ

ERP is not exclusively raspberry pi, the small computer and embedded control interest group at Pumping Station:One in Chicago.

Tonight, Eric Stein, who is Chief Cat Herder and president of Pumping Station:One will take time out of his busy schedule to show us a Raspberry Pi and Python based system that sends messages by passing messages.

eric-beer-240
Eric’s system, which is currently in development, receives input from IRC (internet relay chat) and responds by playing an informational message over one of several louudspeakers located around the PS:1 facility. The Pi does text-to-speech conversion on stored messages and i/o logic and control to select the appropriate audio output channel.

A very interesting aspect of the system is the use of ZeroMQ to pass control messages between the Pi and and a server that does something important that Eric will explain. From wikipedia:

“ØMQ (also spelled ZeroMQ, 0MQ or ZMQ) is a high-performance asynchronous messaging library aimed at use in scalable distributed or concurrent applications. It provides a message queue, but unlike message-oriented middleware, a ØMQ system can run without a dedicated message broker. The library is designed to have a familiar socket-style API.”

Find NERP and Pumping Station:One
at http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/
and http://pumpingstationone.org

NERP meets at 7pm 4-8-13 at Pumping Station:One, 3519 N. Elston Ave. in
Chicago. NERP is free and open to the public.

Ed Bennett ed@kineticsandelectronics.com
Tags: announcement, electronics, embedded, meetup, NERP, Open Source, raspberry pi

Happy Happy
-Ed Bennett

08

04 2013

NERP Tonight! FPGA’s with Ste

NERP is not exclusively raspberry pi, the small computer interest group at Pumping Station:One in Chicago.

Ste Kulov (like “steve” without the “ve”) is the signal processing guru of Pumping Station:One. He’s also a great teacher who’s enthusiastic about sharing his knowledge of the theory and practice of analog and digital circuit design. Tonight Ste will show NERP what FPGA (Field Programmable Gate Array) chips do and how to use the chip manufacturers’ development tools.

Xilinx.com

Xilinx.com

FPGA’s are very fast logic chips that can perform better than microprocessor CPU’s in a number of high throughput applications. FPGA’s are programmable, but FPGA programs aren’t necessarily seqences of instruction like a C program would be. In fact, on an FPGA you can “write” a CPU. All the cool kids are learning to use FPGA’s, and you should, too!

Tonight’s agenda from Ste:
1.) What are FPGAs & CPLDs and what do they do?
2.) Why would you want to use one?
3.) Explain how you would program one using a hardware description
language such as VHDL or Verilog.
4.) Go over a quick Verilog example & demo of displaying “NERP” on the
4-digit 7-segment display on my dev board.
5.) With the remaining time, demo off my Nintendo DS video output
project to illustrate the neat stuff you can do with these things.

Find NERP and Pumping Station:One
at http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/
and http://pumpingstationone.org

NERP meets at 7pm 3-25-13 at Pumping Station:One, 3519 N. Elston Ave. in
Chicago. NERP is free and open to the public.

Ed Bennett ed@kineticsandelectronics.com
Tags: announcement, electronics, embedded, meetup, NERP, Open Source, raspberry pi–

Happy Happy
-Ed

http://KineticsAndElectronics.com

25

03 2013

NERP tonight with Drew: Beagle Bone and Pi Face

beagle-hd-logo

NERP is not exclusively raspberry pi, the small computer interest group at
Pumping Station:One in Chicago.

Tonight Drew Fustini will demo the Beagle Bone.

BeagleBone (http://beagleboard.org/bone) is an open source, low-cost
credit-card-sized Linux computer that connects with the Internet and runs
software such as Android 4.0 and Ubuntu.

BeagleBone is capable of interfacing to all of your robotics motor
drivers, location or pressure sensors and 2D or 3D cameras. It can also run
OpenCV, OpenNI and other image collection and analysis software.

Through HDMI, VGA or LCD expansion boards, it is capable of decoding and
displaying mutliple video formats utilizing a completely open source software
stack and synchronizing playback over Ethernet or USB with other BeagleBoards.

Drew will also hit the high points of a Raspberry Pi interface board called the
Pi Face (http://pi.cs.man.ac.uk/interface.htm)

Pi-Face Digital is the first of a range of interfaces to allow the Raspberry Pi
to control and manipulate the real world. It allows the Raspberry Pi to read
switches connected to it – a door sensor or pressure pad perhaps, a microswitch
or reed switch, or a hand held button. With appropriate easy to write code, the
Raspberry Pi then drives outputs, powering motors, actuator, LEDs, light bulbs
or anything you can imagine to respond to the inputs.

Find NERP and Pumping Station:One
at http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/
and http://pumpingstationone.org

NERP meets at 7pm 3-11-13 at Pumping Station:One, 3519 N. Elston Ave. in
Chicago. NERP is free and open to the public.

Ed Bennett ed@kineticsandelectronics.com

11

03 2013

NERP tonite: Pick-n-Pi

NERP is Not Exlusivey Raspberry Pi, the small computer interest group at Pumping Station:One in Chicago.

gantry-2-640

Boardforge gantry Ver 0.3a in development (Ed_B)

Several members of Pumping Station:One are collaborating on a project to produce a pick and place machine. PnP machines are robotic assembly devices that place electronic components on circuit boards as part of the soldering process. The software that will run the machine is made of several distinct subsystems including motion control and computer vision. Jay Hopkins has been doing some experiments to determine whether a Raspberry Pi can serve as the on-board controller for the machine. Tonight he’ll show nerp some of his progress. Teaser: OpenCV _will_ compile on the Raspberry PI!

Find NERP and Pumping Station:One
at http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/
and http://pumpingstationone.org

NERP meets at 7pm 2-25-13 at Pumping Station:One, 3519 N. Elston Ave. in Chicago. NERP is free and open to the public.

 

25

02 2013

NERP is Not Exclusively Raspberry Pi Monday 2/11 @ 7pm

This NERP, Drew Fustini will show us how to WebIDE to program the Raspberry Pi. WebIDE is free from Adafruit. Put simply, “The Raspberry Pi WebIDE is by far the easiest way to run code on your Raspberry Pi. Just connect your Pi to your local network, and log on to the WebIDE in your web browser to edit Python, Ruby, JavaScript, or anything and easily send it over to your Pi.” Drew will use a Pi Plate RGB 16×2 character “Pi Plate” as the output device.

adafruit_LCD_piplate
At the 1/28 NERP, we announced that the Adafruit Industries community grants people intended to send us a care package with Raspberry Pi goodies. The package arrived last week, and rather than opening it right away I thought it would be nice to share the surprise on Monday. It’ll be fun to see what kinds of ideas come out of the box and what kinds of projects they might inspire.

As always, if you have a NERP related project that you’d like to share, bring
it along!

Find NERP and Pumping Station:One
at http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/
and http://pumpingstationone.org

NERP meets at 7pm 2-11-13 at Pumping Station:One, 3519 N. Elston Ave. in Chicago. NERP is free and open to the public.

11

02 2013

Raspberry Pi hands-on workshop

Not Raspberry Pi

Raspberry Pi hands-on workshop

 

NERP is Not Exclusively Raspberry Pi, but Monday, 1/28, we’ll be all Raspberry.

Pumping Station:One and NERP are excited to be included in Adafruit Industries community grants of cool hardware for the Raspberry Pi.  Adafruit is sending us a care package of Raspberry Pi gear we can use to make projects. The exact contents of the package will be a surprise.

On Monday Jan. 28th at 7pm, we’ll get into the swing of making cool Pi things by doing a hands-on workshop on basic controlling and sensing with the Pi. Bring your Pi, keyboard, monitor, etc, and try out a couple of demo projects from learn.adafruit.com . The parts cost should be about zero since the projects don’t require much external hardware. PS:One′s Electronics area will provide tools and parts to get started.

We’ll learn how to turn on a simple LED (or anything else) using Python. Then we’ll explore two example projects on learn.adafruit.com :

http://learn.adafruit.com/basic-resistor-sensor-reading-on-raspberry-pi/basic-
photocell-reading

http://learn.adafruit.com/playing-sounds-and-using-buttons-with-raspberry-pi

Find NERP and Pumping Station:One
at http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/
and http://pumpingstationone.org

As always, if you have a NERP related project that you’d like to share, bring
it along!

NERP meets at 7pm 1/28/13 at Pumping Station:One, 3519 N. Elston Ave. in Chicago. NERP is free and open to the public.

 

25

01 2013

Not Exclusively Raspberry Pi meetup Mon. 1-14-13 7pm

The new year’s first NERP Meetup will be at 7pm tomorrow night.

In the first half hour, we’ll have a beginner’s look at the Raspberry Pi board and software. We’ll see what extra hardware you’ll need to get started with the Pi and how to boot up a new board.

In the second half-hour, we’ll connect a homemade circuit to a Pi and see one method for controlling stuff with Python. You can find out more about NERP at the Meetup page,

http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/

13

01 2013

Nerp tonight! Monday Dec. 17 at 7pm

Allen Kapusta will make a presentation on types of task dispatching. Any processor more complicted than an Arduino will be shared by different pieces of running code. Allen’s presentation will be a general overview of how tasks are selected for execution by the processor and what guidelines the task should follow in order to co-exist well with its neighbors.

Drew Fustini will show us how to display tweets on a character LCD connected to a Raspberry Pi. His Python examples will demonstrate a simple way to make a read-only connection to Twitter and print tweets on a 4-bit parallel connection.

NERP will not meet December 31st, but will resume its regular bi-weekly schedule starting Monday January 14th.

17

12 2012

Monday Dec. 3rd. is back-to-basics night at NERP

Monday Dec. 3rd. is back-to-basics night at NERP. In Part 1, Carl
Karsten and Bonnie King will give an introduction to Python programming
for novice programmers. The target will be the Raspberry Pi, and the
focus of their teaching examples will be on input/output to simple
hardware. In Part 2, yours truly will demo control of output devices
including simple circuits for interfacing electronics to
electro-mechanical devices.

Find us here…
http://www.meetup.com/NERP-Not-Exclusively-Raspberry-Pi/

-Ed

02

12 2012