networking

AVR baud rate calculator (and fuse calculator)

20 Mhz Baud UBRR % of error 300 4166 0.0 600 2082 0.0 1200 1041 0.0 2400 520 0.0 4800 259 0.2 9600 129 0.2 14400 86 0.2 19200 64 0.2 28800 42 0.9 38400 32 1.4 57600 21 1.4 76800 15 1.7 115200 10 1.4 Lady Ada Rants: Yes, you could always use the […]

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Using a computer’s Display Data Channel as a no-cost I2C interface

Using a computer’s Display Data Channel as a no-cost I2C interface

My fellow Dorkbot DC-er Justin Sabe sent me this one. The title of the project page pretty much explains it: The 25¢ I2C Adapter: an Inexpensive Method of Interfacing I2C Devices with Personal Computers by Leveraging the Existing Display Data Channel (DDC)

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