I am an electronics novice/hobbyist who is recently using an Arduino connected to a breadboard to prototype a set of navigation lights for a remote controlled hexacopter that I am building.
Similar to nav lights on airplanes, I have four strobing white lights that go on the tips of the back four rotor arms, and this alternates with strobing orange lights (beacon) on the top center and bottom center of the craft. This is all fine.
In addition to the strobing lights, I have two solid green lights to go on the two right rear rotor arm tips, and two solid red LED lights to go on the left rear rotor arm tips. All of this is fine too, but the red LEDs are really dim.
No mater if I run the red LEDs through a battery or the Arduino, with a resistor or without and no matter the brand or MCD rating of the LED, they are always more dim than their counterparts of other colors. How do I brighten the darn red LEDs?
Here are the specs for the LEDs. I got them off of eBay from a Chinese manufacturer. There is not a brand name, but all are from the same source:
Emitted color: red, blue, green, yellow, white 20pcs for one color Size: 5mm Forward voltage: 1.9 - 3.6V DC Luminous intensity: 500-20000 mcd