RPi Tutorial EGHS:12V relay driver - GPIO Protection Circuits -
Basic Circuits: LED output - DC motor - Switch Input - Analogue
Sensor - Intermediate Circuits: Shift Registers - Analogue to
Digital - Driving Circuit - Alpha-Numeric Display - Advanced
Circuits: Control Hardware Over The Internet This page is part
of a work in progress. While most of these circuits may
interface directly to the RPi, the use of a buffered interface
(such as the one supplied by the Gertboard) is recommended which
will help protect against damage. Alternatively, experiment with
one of the Alternative Test Platforms. Extreme caution should be
exercised when interfacing hardware at a low level, you may
damage your RPi, your equipment and potentially yourself and
others. Doing so is at your own risk! Note: The 12V relay driver
circuit has been tested with real RPi device and was working
properly. The 12V relay driver circuit combines protection
circuits described in GPIO Protection Circuits. Design was done
with respect to maximize G