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AN #102 - Bit twiddle outputs on 74HC595 daisy chained shift registers to control relays
How to control relays or other devices by using 74HC595 shift registers.
Jim Gillespie created this second AVR application note. It shows how to control relays or other devices by using 74HC595 shift registers. All is controlled by the RS-232 interface and so is indepenand of the operating system. Just send the right code with a terminal emulator and control your home.