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The GN3S Sampler v3 is a very interesting high-end research device. Co-developed by the GNSS Lab at the University of Colorado and SiGe, this USB device captures raw GPS data to a binary file on your computer. This device will not tell you a position solution outright like our other GPS modules. Instead, the GN3S Sampler is designed to directly capture the low-level signal data (raw intermediate frequency samples) being delivered by the GPS satellite network and processed by the SiGe radio front end.
Version 3, the latest of the samplers, continues to utilizes the SiGe 4120 GPS ASIC. However, this latest revision has a driver built around the latest libusb which supports Windows 7 as well as Windows XP. It also enables multiple data collection options in terms of bandwidths (wide and narrow, to allow for better capture of the new Galileo E1 O/S signal) and a range of sampling frequencies. Furthermore, whereas earlier versions limited the sampling depth to avoid instability, this version removes any and all data recording limitations. However, a sufficient PC is still required for continuous data logging.
This device is recommended to be used in conjunction with the book : A Software-Defined GPS and Galileo Receiver. This excellent book will give you the mathematical fundamentals for software-based GPS as well as the source code on DVD. The included MATLAB source code can be used to crunch the collected data to solve for position. This low level processing gives the user a keen insight into the signal processing of a GPS receiver. The provided algorithms encourage user modification to attempt to improved and design next generation GPS receivers.
The μVGA-III module is a compact and cost effective standalone VGA graphics engine powered by the PICASO graphics processor. It can provide a QVGA/VGA/WVGA graphics solution to any embedded project with its powerful graphics, text, image and animation capabilities, along with countless more features built inside the module.
Depending on the programming environment selected when using 4D Systems’ Workshop 4 IDE Software, the user can choose to program the μVGA-III module as a stand-alone device, or as a slave device to an external host controller.
When the μVGA-III is used as a stand-alone device, it allows the user to take complete control of all available resources on that hardware platform such as the Serial Ports, uSD memory card, I/O pins, etc. This eliminates the need for an external host controller/processor to drive the μVGA-III module via serial commands. It provides the user complete control over the hardware module allowing them to quickly develop practical applications.
When the μVGA-III is used as a serial slave device to an external host controller, the host sends specific commands over its serial UART to the μVGA-III to produce the desired user displays.
The μVGA-III features a remote VGA connector, which is able to be disconnected from the PCB. The remote VGA connector enables flexible mounting and connection options when using the μVGA-III.
A 30 way header is provided on the rear of the PCB, which is left unpopulated from the factory, however the header is provided with the module. This can be soldered by the user if required, to gain additional IO and comms if required. Wires can also be soldered directly to the PCB if desired.
This is an evaluation board for the Silicon Laboratories Si4703 FM tuner chip. Beyond being a simple FM radio, the Si4703 is also capable of detecting and processing both Radio Data Service (RDS) and Radio Broadcast Data Service (RBDS) information. The Si4703 even does a very good job of filtering and carrier detection. It also enables data such as the station ID and song name to be displayed to the user.
Using this board we are able to pick up multiple stations just as well as with a standard FM radio. The board breaks out all major pins and makes it easy to incorporate this great chip into your next radio project. Also, by plugging headphones into the 3.5mm audio jack, you effectively use the cable in your headphones as an antenna! Therefore, this board does not require an external antenna if using headphones or a 3.5mm audio cable longer than 3 feet.
Available soon!