XBEE Basics - Community Tutorials Pairing and Other Parameters If you want to have your XBEEs communicate at high speed, with the automatic resending of lost packets, you'll want to pair them. And trust me -- you want the automatic resending capability! This is very easy, we just need to set a few registers in the device. XBEE devices have several settings that we will use, and many more that we won't be using right now. First off, XBEE radios only operate at a given baud rate, this is the number of bits per second that the XBEE can send. The next parameter of interest is the Personal Area Network ID. Once both of our XBEEs are on the same network, we can give each one an address number, denoted by ATMY. Using the MaxStream SoftwareMaxStream distributes a piece of software called X-CTU which allows you to set all of the parameters we describe above, using a Graphical User Interface. When we start X-CTU, we need to select the baud rate and port that our XBEE is connected to: Code: That last command is quite interesting.
Training Information Page In some cases you need to use more communication peripherals than provided by MCUs, and it is necessary to emulate some functionality in software. This presentation describes tips on using DMA and phantom GPIO registers to emulate SPI (or SCI). Using this implementation you can benefit from a complete hardware-like SPI/SCI node on MPC56xx architecture. Course Outline Overview of eDMA on the MPC56xx Features and optionsPeripherals eDMA and DMA channel muxDevices and peripheralsConfiguration and simple DMA transfers Transfer Control DescriptorDMA common useSingle SCI transferSPI emulation example SPI masterSPI slaveSCI emulation example SCI receiverDemonstrationOther ideas with eDMAWrap up What You'll Learn
D-Link DNS-321 Network Attached Storage Enclosure - 2-Bay SATA, RAID 0/1 at TigerDirect D-Link DNS-321 Network Attached Storage Enclosure The D-Link 2-Bay Network Storage Enclosure (DNS-321) is the perfect way to store, share, and safeguard your documents, music, videos, and photos. With the D-Link tool-less installation, easily insert up to two SATA drives1 without any tools or attaching any cables. Additionally, the built-in UPnP™ AV media server enables streaming of digital content to compatible network media players (such as those found in the D-Link MediaLounge™ product line) as well as popular media player applications used in computers. Protection And Performance The availability of four different hard drive modes (Standard, JBOD, RAID 0, and RAID 1) allows you to choose the configuration best suited for your needs. Simplified Management With the included feature-rich Memeo™ software, you can create schedules and rules including real-time full or incremental backups.
PARALLEL LINE DEVELOPMENT Parallel line development is based upon the fact that a line that is parallel to another line is an equal distance horn that line at all points. Objects that have opposite lines parallel to each other or that have the same cross-sectional shape throughout their length are developed by this method To gain a clear understanding of the parallel line method, we will develop, step by step, a layout of a truncated cylinder (fig. 2-50). Such apiece can be used as one half of a two-piece Odegree elbow. 1. 2. 3. Figure 2-51. 4. 5. 6. 7. When the development is finished, add necessary allowances for warns and joints, then cut out your patterns. The radial line method of pattern development is used to develop patterns of objects that have a tapering form with lines converging at a common center. The radial line method is similar in some respects to the parallel line method. The reference lines in parallel line development project horizontally. 1. 2. 3. 4. 5. 6.
DIY battery pack refurbish and upgrade project - With video - Phoenix Home Improvement If the batteries on your cordless tool are not charging any longer and ‘jump starting’ them as described in the previous article has run its course, then you will need replacements. After some shopping around you may find the cost of a replacement NiCD or NiMH battery is typically $35 to $50 depending on the name brand. If you’re the type who plans for contingency, you know you will need two (so, $70 to $100). And, look - right next to those replacement power packs; a nice shiny new combo set is only $30 more and comes with a rebate for an extra battery. Uh-huh. More than likely your original Ni-CD pack is a 1500mAh or 1.5 Amp-hour rated. What to do next. Obviously, you’ll need to save the casing of the battery pack, including the terminals and any microchips or diodes that may be inside. NiCD ≠ NiMH Determine if you have NiCD or NiMH cells. Shopping for cells: Before we shop – a few terms you should familiarize yourself with: There are better deals out there, just hunt for them.
About NiCd and NiMH rechargable batteries About NiMH and NiCd cells and batteries(And a little about LiIons, too...) PLEASE NOTE: Messing about with batteries/cells can be hazardous: Most cells contain hazardous materials and injury and/or damage can result from mishandling them. Cells that are shorted, improperly charged or otherwise maltreated can pose an explosion/burn/chemical or other hazard. You have been warned! Acknowledgments: The information contained herein is from a many different sources ranging from personal experience to manufacturers data sheets, the experience of others, various articles, and the professional experience of some individuals that have long dealt with manufacturing products that use NiCd (and other types of) cells. The emphasis on this page has, over time, shifted from the use of NiCds to NiMH cells. Rechargeable cells are quite economical: Even if abused, they generally cost less to operate on a per-hour basis than non-rechargeable "primary" types like Alkaline cells. Or do you? Slow Charging:
Picarro G1302 Cavity Ringdown Spectroscopy CO/CO2/H2O Analyser – Fast response - Air Quality Monitoring - Gas Monitoring by Enviro Technology Services plc The basics of analyzer sample systems by Ian Verhappen Whilst every effort is made to ensure technical accuracy of the information supplied on iceweb.com.au, Keyfleet Pty Ltd and its employees accept no liability for any loss or damage caused by error or omission from the data supplied. Users should make and rely on their own independent inquiries. By accessing the site users accept this condition. Should you note any error/omission or an article offends please do not ignore it, contact the webmaster and we will review, rectify and remove as necessary. The basics of analyzer sample systemsby Ian Verhappen If you had to design and install a process analyzer system today, how would you do it? As with most things, process analyzer sample systems follow the engineer's "golden rule" (KISS). K - Know your process conditions I - Involve the right people S - Simplify the system S - Select the right equipment. KNOW the Process Conditions Dead spaces System lag time System pressure drop. Dead spaces are often overlooked Figure 2. Figure 3. Figure 4. Thus,
Hacking the D-Link DNS-321 NAS @ DigitalHobbit For some reason I derive immense gratification from hacking cheap commodity consumer devices and making them do much more than they were originally designed to. Not that I can't claim all that much credit (as I generally just apply readily available hacks that others have figured out), but still... Some of my favorite past hacks include: Original Xbox: I haven't played games on it for years, but with XBMC on it, it remains a formidable media center.Buffalo WHR-G54S: Essentially a cheap Linksys router clone, but by replacing the stock firmware it can support features typically present on much more expensive routers (such as sophisticated firewall or QoS functionality). I was running the powerful dd-wrt firmware on it for a while, but later switched to the Tomato firmware (also here), which has most of the same features but is a lot easier to use.Tivo: Back when I bought my first 40GB Tivo, I hacked it to add a 120GB drive (for a fraction of the normal cost).
View topic - How to do a One-Click Installation of Puppy Update: This package now contains two installer scripts. You can either boot the target machine off a Live CD or a USB drive. Unetbootin and Pendrivelinux Users: Look on your Puppy flash drive for a file named syslinux.cfg. If it contains the argument pmedia=cd, change it to pmedia=usbflash. Many users have old computers that they want to completely erase and restore with Puppy. We will assume that you already have a Live CD that works on the target machine and you are familiar with basic Puppy operations. The package below contains scripts that will do an automatic hard drive install of any official Puppy version back to 2.15. These installers will erase the hard drive, format a new partition, create a swap file, install Puppy and set up the GRUB bootloader. Download and extract the "one-click-installer" folder. CD Method: Boot the target computer off the Live CD. Mount the flash drive, open the "one-click-installer" folder and click on the icon labeled "install-cd". USB Method:
HowTo / HomePage browse This page should list all different sets of instructions that detail how to do stuff with the NSLU2, in a neat organised manner. Think of it as a big list of recipes. More factual information (as opposed to instructions) should go under the Information area instead. Put each recipe on a separate page, and don't be afraid to UseAVeryLongPageNameWhichDescribesHowToDoSomething. The page name should be a verb, should use an "active voice" (e.g. say "Build" instead of "Building"), and should complete the phrase "How To ....". For HowTo's that are specific to a particular development stream (like Unslung or OpenSlug), look in the related project area. Completed These How-To's are complete, although it is possible they might be improved in the future as understanding grows. Hardware RedBoot/Flash Cross Development Native Development Projects Peripherals Network Services Network Security Services Remote Access Network File Sharing Backup Schemes Web Services & Applications Email Services Chat & VoIP Services Wiki
Projects I have been contributing to the free software and open source software communities for more than 20 years. Searching back through Google, it seems my first public open source contribution was in June 1990. One of my early major contributions was an Emacs editing mode for the VHDL hardware description language. That was accepted into the mainstream Emacs distribution in 1993, and is still in use and actively maintained today (maintainership has been transitioned to other developers who still actively use the VHDL language in their work). My foray into software for handheld and embedded devices began with the HP 200LX palmtop computer. After a side-trip into the world of PalmOS programming (contributing user-interaction improvement utilities for the Treo range of PDAs), I moved into the world of custom firmware for embedded networking devices. I contributed to the Linksys WRT54G and Asus WL500g custom firmware communities for some time, including both software and hardware contributions.
NSLU2-Linux - Main / HomePage browse S.U.P.E.R. - The Largest 200LX Software Archive super@hp200lx.net No. 1 (with 10842 downloads) ( KB) added // () Version by No. 2 (with 9456 downloads) PAC-Man (4 KB) added 09/08/1997 (Game) Version 1.0 by Tse Kwok Chiu This is pacman for the HPLX series. No. 3 (with 8453 downloads) No. 4 (with 7767 downloads) LXPIC (39 KB) added 12/27/2002 (Graphics) Version 7.3 by Stefan Peichl LXPic is the fastest GIF/ICN/PCX/JPG/BMP viewer for 100/200 LX. No. 5 (with 7518 downloads) World Travel (122 KB) added 12/25/2003 (Reference) Version 2.0 by Jim Gasbarro If you travel a lot, or if you just like maps, World Travel is the program for you. No. 6 (with 6934 downloads) Transfile Win 200 Bugfix (55 KB) added 01/22/2002 (Connectivity) Version 1.03 by Yellow Computing for Hewlett-Packard This file is a replacement for the hpcom.dll file which installs with Transfile Win200 version 1.03 in the Windows system directory. No. 7 (with 6571 downloads) Outlook Calendar/Task Exporter (140 KB) added 07/29/1999 (Import-Export) Version 0.5 by J.H. Offsite File.