Posted on 21 Aug 2008
This I2C-bus analyzer capture all transmissions via I2C/TWI bus, decode it and send to PC via virtual RS-232 port. Received data can be displayed by any terminal program on PC computer. Main part of analyzer is ATTiny2313 microcontroller with 20MHz crystal. [more]
Posted on 15 Aug 2008
This EEPROM programmer reads, writes and erases I²C 24C EEPROM devices. It has a PC serial port interface. The programmer needs 5VDC power supply. It can read or write one page (16 bytes) at a time by programming the page with a terminal program such as hyperterminal, no external software is needed to read or write to the EEPROM.[more]
Posted on 24 Jul 2008
The Balloon Project is an open Hardware development boards.It has produced Balloon3, a high-performance ARM board designed for use by OEMs and Higher education. Spec is PXA270 (583Mhz), FPGA or CPLD, 1GB flash, 784MB RAM, USB (master, slave, OTG), CF slot, expansion bus, 16-bit bus, I2C, LCD, serial, audio. Very low power in CPLD confiuguration. Small, light. Various add-on boards: VGA LCD driver, robot motor driver+A/D, digital IO. Released under the Balloon Open Hardware license, which allows anyone to manufacture and for people to make derivatives. The expansion bus allows balloon to be used as the computing component for various special-purpose devices.[more]
Posted on 03 Jul 2008
The sensor ports on the NXT support a serial digital protocol called I2C, which was developed by Philips in the 1980’s for use in consumer electronics (in television sets, for example). This article describes the use of a simple I2C chip that provides 8 digital I/O ports with the NXT.Each one of these eight ports can be used as either input or output. These inputs and outputs are binary: they are either on or off.[more]
Posted on 17 Jun 2008
The project includes the actual analyzer in VHDL (for Spartan 3 FPGA) and a PC Software for the end user. The design employs a FPGA board that can be obtained easily.
Features
16 channels at 200MHz sampling rate
32 channels up to 100MHz sampling rate
state analysis up to 50MHz using external clock
256KSamples memory
noise filter
complex serial and parallel trigger with four stages
externally available sampling clock to drive add-ons (like ADCs)
connects via EIA232/RS232 (works with usb to serial adapters)
Java based viewing software (see PC Client for details)
I2C & SPI protocol analysis
[more]
