Here's the plan: I want to use one bi-color resistor for Power and HDD activity on my briefcase box. I want it to be, say, green when just the power is on, and flicker red when there's HDD ...

Thus, thegreen LED illuminates ascurrent passes through itand through R 1 and R 2 . The diode, transistor, and resistor valuesare not critical, and you can adjustthem according to your needs. You ...

The circuit in Figure 1 uses a bicolor (red/green) LED to indicate the voltage measured with a set of three color pulses. The green, yellow, and red pulses indicate the units, ...

Here is a simple logic state indicator to test whether the output of digital IC is in logic 1 or 0. The Bicolor LED lights Green when the logic state is 1 and lights Red when the logic state is 0. The ...

So for the LED’s, he again went a bit off the beaten path, selecting to use three different color styles of bi-color LED’s with easy to hand-solder, 1206 footprints.

Using a simple PIC microcontroller and small program, a bicolor (red/green) LED can be controlled and directed to indicate measured voltage from 0 to 5 V using a simple pulsed ...