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DIY Arduino Boards for IO using port expanders and I2C
DIY Arduino Boards PCF8674 MCP23017 74HC595 CD4021
I2C
Parallel IO
Piezo buzzers
See the Files section for a wide range of sensors and sample code
Schematics
PCB Layout
Sample Code
Working with microprocessors is one of the most creative, challenging and rewarding areas of electronic and software engineering. Open-USB-IO makes learning this process fun and easy.
A Perl script that interfaces with the Devantech USB to I2C interface adapter. This script allows a user to read and write as a master to the i2c bus as well as set or get the value of the io pins.
Solution to the cooling fan noise annoyances Thinkpad T4x (T40/T41/T42/T43) notebook series. Allows the user to control fan activity based on the system temperature. Win XP Visual C++ project controls the fan via port IO to the embedded controller.
Focus of this project is the development of an microcontroller/FPGA evaluation board.
Basic characteristics as given below:
- Philips LPC 22xx controller
- additional FPGA, Xilinx Spartan
- SD-Card interface for booting
- additional IO-interfaces
Input/output (IO) C library exposing a common API for real mode and permission-restricted access to parallel port under Windows, Linux and MS-DOS operative systems. It also allows pin-by-pin port access.
vport is a universal hardware interface for education and development. It supports
all important microcontroller intefaces such as I2C, SPI, JTAG, RS232, IO-Ports, 1-Wire, CAN, ...
A ZigBee library for ZigBee Series I-II, this library keep a list of end device, their status, IO values, configurations, etc... the idea is keep updated all, all the time.