- on Computer/Software/Internet
- Published in issue 2/2012 on page 67
Bit-banging the FTDI-USB Module
Taking advantage of little-known features of FTDI’s USB ICs
This article describes the electrical design and software requirements for a keyless entry control panel comprised of a numeric entry pad, an LCD display, relay contacts for unlocking a door and a USB interface. Even though this writing will delve into the inner workings of FTDI’s FT2232H and its Bit-Bang Mode, understanding the technology will require neither an in-depth knowledge of USB nor the use of a microcontroller!