This work proposes a single LED driver circuit that can
be used to drive multiple types of LED with the ultimate aim
of reducing cost of using different driver circuit for different
LEDs and to enhance LED technology. In this work, only
two LEDs with different specifications are used to verify the
working of driver circuit. Pulse Width Modulation (PWM) is
used to achieve the purpose. Micro controller circuit with a
simple program written in Arduino is used to change the
PWM signal sent to LED driver. The proposed design is
simulated and a prototype is designed and the validity of the
designed driver is verified.