Adjustable LED base

thingiverse

Many people have asked me how I light my lampshades with style and flair. I simply use a red, green, and blue LED in perfect harmony, offset from each other to create a stunning effect. My old wooden LED bases are simple and elegant, but now I've created one that can be printed with ease. The distance between the LEDs is adjustable, controlled by turning the outer ring of the base. This allows for a customizable lighting experience like no other. I've also included an example of how to calculate the resistor values for 3W red, green, and blue LEDs. Below, I've calculated the resistors for these powerful LEDs, along with the calculations for 1W LEDs. However, please note that these resistor values are specific to a 5V power supply. For the 3W heatsink LEDs, I've calculated the resistor values as follows: Red LED: The voltage across the resistor is 2.7V, and the current is 0.7A. This results in a resistance of 3.86 ohms and a power rating of 1.89 watts. To achieve this, I used eight 33-ohm resistors in parallel. Green LED: The voltage across the resistor is 1.4V, and the current is 0.7A. This results in a resistance of 2 ohms and a power rating of 0.98 watts. For this calculation, I used five 10-ohm resistors in parallel. Blue LED: Similarly, the voltage across the resistor is 1.4V, and the current is 0.7A. This results in a resistance of 2 ohms and a power rating of 0.98 watts. Again, I used five 10-ohm resistors in parallel to achieve this. For the 1W LEDs without heatsinks, I've calculated the resistor values as follows: Red LED: The voltage across the resistor is 2.7V, and the current is 0.434A. This results in a resistance of 6.22 ohms and a power rating of 1 watt. To achieve this, I used six 33-ohm resistors in parallel. Green LED: The voltage across the resistor is 1.4V, and the current is 0.434A. This results in a resistance of 3.23 ohms and a power rating of 0.6 watts. For this calculation, I used five 10-ohm resistors in parallel. Blue LED: Similarly, the voltage across the resistor is 1.4V, and the current is 0.434A. This results in a resistance of 3.23 ohms and a power rating of 0.6 watts. Again, I used five 10-ohm resistors in parallel to achieve this. I've opted for quarter-watt resistors to make them easier to work with, but you can certainly use a single large resistor if you prefer. If all this seems too complicated, you can simply purchase a standard LED driver or dimmer.