http://processors.wiki.ti.com/index.php/Stellaris_LaunchPad

Getting Started with the Stellaris EK-LM4F120XL LaunchPad Workshop

Version 1.02 October 2012

Introduction

The Getting Started with the Stellaris EK-LM4F120XL LaunchPad Workshop is a free, in-depth, hands-on introduction into Stellaris LM4F basics including:

1. Introduction to the ARM® Cortex™-M4F and Peripherals
2. Introduction to Code Composer Studio
3. StellarisWare, Initialization and GPIO
4. Interrupts and the Timers
5. ADC12
6. The Hibernation Module
7. USB
8. Memory
9. The Floating-Point Unit
10. BoosterPacks and the Graphics Library

http://www.virtual-oscilloscope.com/simulation.html#

Oscilloscope Simulation Start! Usage Hints Operate the system as you would operate a real one. You can attach and detach signal cables. Turn the oscilloscope on, before starting to measure. If you own a sound card, turn your speakers on, because the simulation contains the original sounds of switches and wheels. You only get the full functionality and the correct look if you observe the system requirements. Should the simulation not start or other errors occur, please read the frequently asked questions or send a problem report. Download Time with DSL approx. 10 s with 2 ISDN channels approx. 40 s with 56 K modem approx. 1 min. 30 s with 28.8 modem approx. 3 min. Virusphobia? The oscilloscope simulation is no executable program, but an interactive computer movie based on Macromedia Shockwave. It is technically impossible that Shockwave movies copy malware to your computer. Help The simulation is equipped with context-sensitive help. To obtain help for a button or wheel, doubleclick your mouse on the according element. You can read help files without starting the simulation. Documentation Click here for a documentation of the project.

http://outside.wallawalla.edu:8901/

This is a beta test WebSDR receiver, located at Walla Walla University, in College Place, Washington, on the West Coast of the USA. It is operated by Rob Frohne, KL7NA, e-mail my call sign at arrl dot net. The hardware consists of a three Softrock down converters (thanks to Tony, KB9YIG) which are fed into an M-Audio Delta 1010LT sound card on a Pentium III Dell computer.

The software is from PA3FWM, and is not released yet. More information about the WebSDR project can be found on http://www.websdr.org.

This receiver is tuned to two parts of the 20 meter amateur radio band. The frequencies from 14.150 to 14.200 often have US and foreign amateur operators. The frequencies between 14.100 and 14.200 are mostly Canadian and other foreign amateur stations. They are on upper sideband (USB). The frequencies from 14.000 MHz to 14.100 MHz are used for digital modes like CW, PSK31, RTTY, etc. The 40 meter receiver is tuned to the digital and foreign phone (voice) band, so you can hear a variety of types of signals there.

There is PSK Spotting software running using the same audio stream that you can listen to here.  If you look here, you can see a map with all the stations heard in the last 24 hours.
A brief description of the hardware and software used on this websdr server is here, for those interested.

The K7UEB club station is also used in WSPR, the Weak Signal Propagation Reporter Network. WSPR transmits a QRP signal during 2 minute windows approximately 3 to 4 times an hour. During these transmission windows, the websdr receivers experience intense interference. Go to the WSPR mapand enter the call “K7UEB” (TS-590S), “K7UEB/20” (20M SDR) or “K7UEB/40” (40M SDR) to see who we’ve spotted and who has spotted us.

Note: you need both Sun Java and JavaScript enabled for this page to work properly. If you don’t hear anything, probably Java is disabled or its version is too old (i.e., pre-1.4.2).  If you are using Ubuntu 10.10, in Synaptic you need to remove the icedtea6-plugin and install the sun-java6-plugin. If you would like sun-java6 to use pulseaudio on in Ubuntu 10.10, have a look at this page that also tells you how to use Fldigi and the Jack Audio Connection Kit to demodulate digital modes with websdr and Ubuntu 10.10.

This WebSDR is currently being used by 1 user(s) simultaneously:

::ffff:213.192.3.1