Design with troyka_LED_White in Cirkit DesignerThe Troyka White LED module is a compact and easy-to-use electronic component that emits white light when an electrical current passes through it. LEDs are widely used in various applications due to their low power consumption, long life, and compact size. Common applications for the Troyka White LED include indicator lights, backlighting, decorative lighting, and DIY electronics projects. This module is particularly suitable for educational purposes, hobbyist projects, and prototyping.
This circuit consists of a red LED, a toggle switch, and a power source. The LED is powered by a 3.7V supply from the MAHIR 1.mini module, and its illumination is controlled by the toggle switch, which connects or disconnects the LED's cathode to ground.
Open Project in Cirkit Designer
This circuit is a simple 12V lighting system that uses a toggle switch to control a 12V white LED strip. The circuit includes a fuse for overcurrent protection and is powered by a 12V battery.
Open Project in Cirkit Designer
This circuit consists of an RGB LED controlled by three pushbuttons, each corresponding to one of the LED's color channels (Red, Green, and Blue). The pushbuttons are powered by a MAHIR 1.mini power source, allowing the user to manually toggle each color channel of the RGB LED.
Open Project in Cirkit Designer
This circuit uses an Arduino MKR WiFi 1010 to control a white LED based on input from a VS1838B IR receiver. The Arduino reads signals from an IR remote and turns the LED on or off depending on the received command.
Open Project in Cirkit Designer| Pin Number | Description | Notes |
|---|---|---|
| 1 | Anode (+) | Connect to positive voltage |
| 2 | Cathode (-) | Connect to ground (GND) |
Power Supply: Ensure that the power supply voltage does not exceed the maximum forward voltage of the LED. Use a current-limiting resistor to prevent damage to the LED.
Current-Limiting Resistor: Calculate the value of the current-limiting resistor using Ohm's law: R = (V_supply - V_forward) / I_forward. For a 5V supply and a typical forward current of 20mA, the resistor value would be (5V - 3.3V) / 0.02A = 85Ω. Choose the nearest standard resistor value, which is 82Ω.
Connection: Connect the anode of the LED to the positive side of the power supply through the current-limiting resistor. Connect the cathode to the ground (GND).
// Define the pin connected to the LED
const int ledPin = 13; // Most Arduino UNOs have an onboard LED on pin 13
void setup() {
// Set the LED pin as an output
pinMode(ledPin, OUTPUT);
}
void loop() {
// Turn the LED on
digitalWrite(ledPin, HIGH);
delay(1000); // Wait for 1 second
// Turn the LED off
digitalWrite(ledPin, LOW);
delay(1000); // Wait for 1 second
}
Q: Can I connect the LED directly to a 5V power supply? A: No, you should always use a current-limiting resistor to prevent damage to the LED.
Q: What happens if I reverse the polarity of the LED? A: The LED will not light up if the polarity is reversed, and prolonged reverse connection may damage the LED.
Q: How do I know if my LED is burnt out? A: A burnt-out LED will not emit light even with the correct power supply and polarity. Use a multimeter to check for continuity across the LED pins. If there is no continuity, the LED is likely burnt out.