01 - TK01 XL LED

# Overview The TK01 features a premium 10mm jumbo LED, controlled by a digital pin with active-high logic. When the pin is high, the LED turns on; when low, the LED turns off. ![](https://cdn.shopify.com/s/files/1/0331/9994/7908/files/Pasted_image_20250730060607.png?v=1754355764) > **Digital Output** > **Active High** # Pinout | Pin | Function | | ------ | -------------------- | | GND | Ground | | NC | Not Connected | | NC | Not Connected | | Signal | Digital, Active High | # Dimensions ![TK01 XL LED Dimensions](https://cdn.shopify.com/s/files/1/0331/9994/7908/files/Pasted_image_20250526113448_c67deab1-6c80-4cb2-9489-d29ea0381d82.png?v=1752732396) # Components ## 10mm LED The TK01 features a premium 10mm jumbo LED. This size indicates the LED's outer diameter, compared to the standard 5mm LED. Smaller 3mm LEDs are used in compact applications, while 10mm LEDs are designed to maximize light output. The voltage requirements and maximum current limits vary for each color LED. Below is a summary table for different colored LEDs. | LED Color | Voltage | Current | Intensity | | ------------------- | -------- | ------- | ---------- | | **Blue** | 2.6-3.2v | 20mA | 9,400mcd | | **Green** | 3.0-3.6v | 20mA | 27,000mcd | | **Orange** | 1.8-2.4v | 18mA | 700-800mcd | | **Pink** | 2.6-3.2v | 18mA | 800-900mcd | | **Purple / Violet** | 2.6-3.3v | 18mA | 180-190mcd | | **Red** | 1.8-2.4v | 20mA | 15,600mcd | | **White** | 2.6-3.2v | 20mA | 52,000mcd | | **Warm White** | 2.6-3.2v | 20mA | 46,000mcd | | **Yellow** | 1.8-2.4v | 20mA | 400-500mcd | ## Resistor The LED's anode pin connects to a digital signal pin, while the cathode pin links to ground through a carefully selected series resistor. This resistor limits the current to the LED's maximum safe level when powered by a 5V MCU, balancing optimal brightness and component protection. The current typically ranges from **18mA to 20mA**, varying by LED color. # Test Points There are three test points for measuring voltage across each component. Test Point 1 measures the LED, Test Point 2 measures the resistor, and Test Point 3 measures the main voltage supply. Per Ohm's Law, the sum of the voltages across the LED and resistor should equal the main supply voltage. By measuring the resistor's value and the voltage at Test Point 2, you can calculate the current flowing through the entire circuit. ![TK01 XL LED Test Points](https://cdn.shopify.com/s/files/1/0331/9994/7908/files/Pasted_image_20250526115339_797ca485-5c65-4ee2-ba57-9717de75d86d.png?v=1752732400) # Sample Code This code triggers the TK01 XL LED to turn on every 500 milliseconds (half-second). The TK01 XL LED is connected to digital pin D3 on an UNO R3. Setting the GPIO pin D3 to HIGH turns the LED on, and setting it to LOW turns it off. ```c++ const int ledPin = 3; // TK01 XL LED connected to D3 void setup() { pinMode(ledPin, OUTPUT); } void loop() { digitalWrite(ledPin, HIGH); // Turn LED on delay(500); // Wait 500ms digitalWrite(ledPin, LOW); // Turn LED off delay(500); // Wait 500ms } ``` # Product Link For product support, manuals, tutorials, and sample code, please visit our product page to access comprehensive resources. [https://lonelybinary.com/products/tk01](https://lonelybinary.com/products/tk01) # Support If you encounter any issues, please go to [https://lonelybinary.com ](https://lonelybinary.com ) and click the Support button located in the bottom right corner. Our team is ready to assist you. [![Technical Support](https://cdn.shopify.com/s/files/1/0331/9994/7908/files/Pasted_image_20250527102623_4e41083f-a1d3-412d-a78f-9cb11ecf69e5.png?v=1754008493)](https://lonelybinary.com) # Thank You Thank you for choosing TinkerBlock to fuel your passion for STEM! Whether you’re a student diving into coding, an educator shaping future innovators, a hobbyist bringing your vision to life, or a business seeking cutting-edge solutions, TinkerBlock empowers you to create, learn, and innovate. **For school orders, wholesale inquiries, or custom business solutions, please contact us to discuss your specific needs.** [office@lonelybinar.com](office@lonelybinary.com) > **Unleash Your Creativity with TinkerBlock – Where Coding Meets the Real World!**