We powered the chip from the Bus Pirate’s 5volt supply, but it would also work fine at 3.3volts. The I2C bus requires pull-up resistors on both bus wires. 5volts is supplied to the pull-up ...
The Whiffletree shown above is a way to turn binary data into a mechanical analog value. [Bill Hammack] explains how this assembly is used in a typewriter and how a whiffletree can convert binary ...