Select RGB or RGBW LED strip lights.RGB strips contain red, green and blue LEDs which can be controlled separately. RGBW also has white LEDs. Either will work for this project.
Get an RGB LED controller. The controller allows you to adjust the red, green and blue channels individually to create the flashing effect. Common options are remotes (IR, RF, Wi-Fi, BT), timers and dimmers.
Put the strip in flashing mode. The controller should have flashing, chasing or strobe modes to automatically turn the red, green and blue LEDs on and off. Select the flashing mode using the controller.
Turn on only the red and green LEDs. Adjust the individual red, green and blue brightness levels using the controller until only the red and green LEDs are lighting up in the flashing pattern. Turn the blue LEDs off.
Set the flashing speed. Use the controller to adjust how fast the red and green LEDs flash on and off. Faster or slower as desired.
Engage and disengage the flashing. Use the controller to easily turn the flashing effect on and off whenever wanted.
Consider a relay or flash controller for custom effects. For more complex custom flashing sequences, a relay kit or dedicated LED flash controller with programmable effects may be used in place of the standard RGB controller.
Waterproof for outdoor use. Apply silicone sealant over any connections for weather resistance. Use outdoor-rated components for longer lasting protection from the elements.
Test and troubleshoot. Check that the red and green LEDs are flashing properly before leaving the area. Re-check connections and settings if any issues arise.
Use RGB LED strips or controllers.
Use RGB LED strip lights or controllers. RGB strips allow controlling the red, green and blue LEDs separately. RGB controllers, remotes or apps are needed to adjust each color channel.
Select a flashing or chasing mode. Most basic RGB controllers offer built-in flashing, chasing and strobe effects. Select the desired flashing mode using the controller or remote.
Adjust the red and green LEDs only. Set the individual brightness levels for the red, green and blue channels until only the red and green LEDs are lighting up in the flashing pattern. Turn the blue LEDs off.
Set the flashing speed. Adjust the frequency of the on/off flashing pattern to create faster or slower speeds as desired using the controller or remote.
Engage and disengage the effect. Easily turn the flashing pattern on and off using the RGB controller or connected remote/app whenever wanted.
Consider a relay or programmable flash controller. For more complex custom effects, use a relay kit or dedicated LED flash controller that allows programming custom flashing sequences. Provides more flexibility than a standard RGB controller.
Weatherproof for outdoor use. Apply silicone or other sealant over connections and use outdoor-rated components for longer lasting protection from environmental exposure.
Test and troubleshoot. Check that the red and green LEDs are flashing as intended before leaving the area. Re-check settings or connections if any issues are found.
Use LED light strings with built-in flashing modes. Simplest method but least flexible.
Add gels, covers or paint to stationary LEDs. Will color the light and create a flashing effect but not adjustable.
Icicle lights or net lights with red and green bulbs. Also have built-in flashing but less control.
Soldering LEDs for custom installations. Permanent but allows maximum control and customization. Requires soldering skill.
Here is a DIY RGB LED lights or colored lights production tutorial, the main steps are as follows
Gather the components:
LED strip lights or string lights: Choose either 5050 RGB LED strips or strings of berry LED lights. RGB strips allow controlling red, green and blue LEDs separately to produce different colors. Berry string lights have LEDs in red, green and blue.
LED strip light controller (for RGB strips): Needed to adjust the LED colors. Controllers offer dimming, color changing and flashing effects.
LED bulbs (optional): For a custom installation, you can buy individual color LED bulbs – red, green, blue, yellow, etc. Requires soldering to install.
Power supply: Use an adapter matched to your LED product. Typically 12V DC for most strips and string lights.
Choose your LED base product. Either LED strip lights, berry string lights or individual LED bulbs. LED strips provide the most flexibility. Berry lights and bulbs require less installation work.
For RGB LED strips, connect the strip to the controller and power supply. The strip has color wire inputs for red, green and blue. The controller adjusts the power sent to each color.
Select your desired LED color using the controller or remote. Adjust the individual brightness levels for the red, green and blue LED channels to produce the color you want.
Dim or brighten all channels to adjust the intensity. Makes the color lighter or deeper in shade.
Create flashing or strobing color effects using the controller (for RGB strips only). Adjust the speed and duration of the flashing pattern.
Consider adding a diffuser to soften and spread the LED light. Especially useful for RGB strip lights. Helps achieve an even field of color.
Weatherproof the LEDs before outdoor installation. Apply silicone sealant over all wire connections and solder points. Use a sealant rated for electrical connections and resistant to UV light.
Test and troubleshoot your DIY LED lights. Check that all lights are functioning properly and colors are displaying correctly before leaving the area.