Space Goggles of Awesomeness

thingiverse

This is a C++ code snippet that appears to be a custom program for an Adafruit Trinket microcontroller, specifically designed for low-power NeoPixel goggles. Here's a breakdown of the code: **Includes** The code includes the necessary libraries for the NeoPixel library and the `TinyISP` programmer. **Constants and Variables** The code defines several constants and variables: * `NEOPIXEL_PIN`: The digital I/O pin connected to the Neopixel string (set to 0). * `NEOPIXEL_COUNT`: The total number of Neopixels in the chain (2 x 16 = 32). * `pixels`: An instance of the `Adafruit_NeoPixel` class, initialized with the number of pixels and the pin number. * `PIN_BUTTON_A`: The I/O pin connected to a momentary contact pushbutton (shared with USB) (set to 3). * `pressTime`, `buttonState`, `mode`, `offset`, `color`, `N_COLORS`, and `colors` are all variables used for button debouncing, animation effects, color sequences, and other purposes. **Setup** The code sets up the Neopixel string by calling the `pixels.begin()` method to initialize it with a speed of 800 kHz. **Main Loop** The main loop consists of several sections: 1. Button Debouncing: The code checks if the button has been pressed or released, and updates the `buttonState` variable accordingly. 2. Animation Effect: If the animation effect is not in auto-mode (i.e., `autoMode == 0`), it advances the color sequence manually based on user input. 3. Auto-Mode: If the animation effect is in auto-mode, it cycles through a predefined set of colors (defined in the `colors[]` array). 4. Display Colors: The code sets the color of each Neopixel LED using the `pixels.setPixelColor()` method. **Functions** The code defines two functions: * `advanceMode()`: Advances the animation effect mode and color sequence. * `pressTime()`: Not used in this code snippet, but likely used for debouncing purposes. **Notes** This code appears to be a modified version of an Adafruit example program. The author has added support for a momentary-contact pushbutton on pin #3, which toggles the animation effect between auto-mode and manual mode when pressed for longer than 1/2 second. Shorter button presses advance the color sequence manually. The code assumes that the Neopixel rings are connected to the Trinket board's digital I/O pins (pin 0 in this case) and that the momentary contact pushbutton is shared with USB on pin #3. The animation effects and color sequences can be customized by modifying the `colors[]` array and adding new animation effects using the `mode` variable. Overall, this code provides a basic framework for creating interactive low-power NeoPixel goggles with customizable animation effects and button control.