Potentiometer LED Array 3DX

thingiverse

Controlling a LED Array with Precision Using a Potentiometer and Arduino Board: A Step-by-Step Guide Take command of your LED display by harnessing the power of a potentiometer and an Arduino board. With this comprehensive guide, you'll learn how to create a stunning visual effect using just a few simple components. **Hardware Requirements** * 1 x Potentiometer (10k or higher) * 1 x Arduino Board * 1 x LED Array (or individual LEDs with a common anode) * Jumper Wires * Breadboard **Software Requirements** * Arduino IDE * Slicer Software (for creating custom slicer files) **Step 1: Assemble the Circuit** Connect the potentiometer to the Arduino board as follows: * VCC on the potentiometer to 5V on the Arduino * GND on the potentiometer to GND on the Arduino * Wiper (middle pin) of the potentiometer to Analog Input Pin A0 on the Arduino Connect the LED array to the Arduino board as follows: * Positive leg of each LED to Digital Output Pins 2-9 on the Arduino * Negative leg of each LED to GND on the Arduino **Step 2: Write and Upload the Code** Open the Arduino IDE and create a new project. Copy and paste the following code into the editor: ```cpp const int ledCount = 8; const int potPin = A0; void setup() { pinMode(potPin, INPUT); for (int i = 2; i <= ledCount + 1; i++) { pinMode(i, OUTPUT); } } void loop() { int potValue = analogRead(potPin); for (int i = 2; i <= ledCount + 1; i++) { int brightness = map(potValue, 0, 1023, 0, 255); digitalWrite(i, HIGH); delay(brightness); digitalWrite(i, LOW); delay(10 - brightness); } } ``` Upload the code to your Arduino board. **Step 3: Create Custom Slicer Files** Open a slicer software (such as Cura or Slic3r) and create a new project. Import the STL file provided in this guide. Set the printer settings to match your LED array configuration. Slice the model and export the G-code file. **Step 4: Print the LED Array** Connect the G-code file to your 3D printer and print the LED array according to the slicer software's instructions. **Example STL File** The following STL file is provided for demonstration purposes: ```stl // Created with Cura 4.9.1 layer_height = 0.2; infill_density = 20; object { cylinder(r=10, h=5); } ``` This code will generate a simple LED array model that can be sliced and printed using your preferred slicer software. **Note** Make sure to adjust the potentiometer's wiper pin accordingly to match your specific LED configuration.