Basically, USB-AtmelPrg is an USB-based "universal interface cable" connecting a host computer to the programmable device such as a microcontroller or a CPLD.
Published: May 3rd, 2008
This is a USB (universal serial bus) interface board which can be used to connect 8 (parallel) data lines to the USB. The interface comes with a small internal FIFO (384 byte Tx, 128 bytes Rx) and 4 handshake lines which make it suitable for interfacing microcontroller designs to the USB.
Published: May 3rd, 2008
The Printer Sharer will allow two PCs to share one parallel (Centronics) printer without manual intervention. Users simply print from their software applications as usual, and the printer sharer lets the data through on a first-come first-served basis. The computer that comes second receives a "busy" signal until the first computer has finished. Most software, including Windows 3.1 Print Manager, will happily wait for the printer to become available.
Published: April 25th, 2008
Wireless networking is easy, as long as you have the right tools for the job. Here is how to get on the air with Z-World Wi-Fi application kit, which includes a Linksys Wi-Fi card and RCM3100 module. Go wireless in no time.
Published: April 24th, 2008
Bernard shows us how to use an use an accelerometer as a mouse. This project uses a MEMS X/Y accelerometer, a PIC microcontroller and a old mouse. He also describes a trick for powering the new mouse with the unused RS232 serial control lines.
Published: November 19th, 2007
You can attach an SD camera memory card to any homebrew DIY project that has a few I/O pins, using ordinary connectors you probably have right now
Published: November 19th, 2007
That mini usb connector port on your camera, external hard drive, music player may allow your devices to be small and hip-looking, but they seriously lack the structural rigity of their pretecessors (RS-232, Parallel) The following is a quick fix guide to solve this problem.
Published: November 19th, 2007
The FT8U232AM requires a small number of external components to produce a device that converts USB to TTL level RS232 signals. All you need to add is a TTL to RS232 converter to provide the 12V RS232 logic levels.
Published: July 21st, 2007
The GP2X is an handheld running Linux. It has 2 arm-processors and a few peripherials, amongst others an usb host function. The usb host function is available through the ext-port, but no 5V is available there, so in order to get usb from that you\'ll either need a wall wart to supply the 5V or use a DC-DC-converter to generate 5V from the 3.3V that is available from the ext-port.
Published: July 21st, 2007
This interface is also useful for controlling small robots, etc. It is cheap and fairly easy to build
Published: July 21st, 2007
The GP2X is an handheld running Linux. It has 2 arm-processors and a few peripherial interfaces: Available on the ext-port is a serial port which normally is used as a debugging port. Other hardware can be connected to it too, though.
Published: July 21st, 2007
It\'s completely passive and contains a Geode X86-like processor at 200MHz, an SDRAM-slot, a memory chip and peripherials like a serial port and integrated video. In the box, integrated on the motherboard, is a 256K BIOS-chip and an 8MB Disk-On-Chip-device.
Published: July 21st, 2007
The Sweex LB000021 is about the cheapest hardware router one can get. I bought mine for E25,- new. The fun thing about these routers is that there\'s a complete MIPS-architecture processor in it, the ADM5120, which runs Linux. One of the features of the ADM5120 is that it has an onboard USB-hostcontroller. In the LB000021, however, this feature is not used.
Published: July 21st, 2007
Below are the best articles on how to squeeze every second of juice from your lappys battery. If you do not want to read all those, these 5 tips just about sum them up.
Published: July 21st, 2007
Here are the instructions, and photos, how I did fix my DELL display E172Fbp LCD with a flashing power light. This repair also works for model E171Fbp and E173Fbp. It may solve the black screen problem.
Published: July 21st, 2007
This stuff looks great and you can even plug a hard-drive. The main issue is that the firmware only support 999 files on a single USB device, so that is enougth for 4Go of MP3 but not more.
Published: July 20th, 2007
This program is a simulator for ad hoc networks. Its purpose is to simulate different real-world mobility models based on the users input. The models contain regions, groups, and nodes (followers). Region represent geographic areas from which a group obtains it speed and direction (input of the user).
Published: July 18th, 2007
The idea here is to have a large battery pack, a regulator to keep the voltage constant at 24V (should be able to handle at least 1.5A continuously), and a male 2.5mm stereo headphone connector (same as the typical cell phone hands-free connector), which fits the proprietary Apple power connector.
Published: July 16th, 2007
AT type computer power supplies are often used by model railroaders to provide 12 and 5 Volt accessory power for their layouts. These supplies are reasonably inexpensive due to their age and have been removed from old personal computers.
Published: July 16th, 2007
If you connect the TTL outputs of the RS-232 receivers to the (TTL) inputs of the RS-232 drivers, you effectively get the original signals with plenty of current for any serial-powered device with an extremely simple circuit using MAX205.
Published: July 16th, 2007