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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
Firmware and schematic for a USB HID compatible remote control consumer device using an Atmel AVR Atmega8. No drivers are needed for WindowsXP / WMP10 / Vista / Windows 7. Press Play/Stop/Pause and control media player directly from your remote control.
OpenVGA is an free and open FPGA-based implementation of a VGA compatible graphics adapter, and utilising low-cost hardware. The project includes the PCB schematic and artwork, Verilog HDL, firmware assembly code, and driver source code.
This project makes it possible to switch 8 LEDS over a USB connection. It indicates the CPU work or animations. The following page contains the schematic, firmware ... http://www.cesko.host.sk/IgorPlugUSB_RS232/IgorPlug-USB%20(AVR)%20RS232_eng.htm
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