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The 10-Channel LED Sequencer is an embedded lighting project powered by an Arduino microcontroller, designed to orchestrate 20 distinct visual animation routines across a synchronized 10-LED strip. Utilizing dedicated GPIO pins from Digital Pin 4 through Digital Pin 13, this project highlights algorithm-driven LED animation, precise timing routines, and clean digital I/O management without relying on external driver ICs.
While traditional LED chasers are limited to simple unidirectional sweeps, this sequencer delivers dynamic motion profiles ranging from classic Larson scanners and Tetris-style block stacking to dual-opposing collision paths, theater marquees, and pseudo-random starry twinkles. Each animation is isolated into modular subroutines, making the codebase extensible for audio visualizers, interactive props, architectural models, and custom status dashboards.
| Parameter | Specification | |---|---| | Microcontroller | Arduino Uno / Nano / Mega (ATmega328P compatible) | | Output Channels | 10 Channels (Digital Pins 4 to 13) | | Current Limiting | 220 Ω to 330 Ω per channel | | Current Draw (Max) | ~150 mA to 180 mA (all channels active at 5V) | | Logic Level | 5V TTL | | Timing Resolution | Millisecond-level hardware delay profiling | | Power Supply | 5V via USB or 7–12V DC via Vin/Barrel Jack |
| Channel | Arduino Pin | Component | Color (Recommended) | |:---:|:---:|---|:---:| | LED 1 | Digital Pin 4 | 5mm LED + 220 Ω Resistor | Red | | LED 2 | Digital Pin 5 | 5mm LED + 220 Ω Resistor | Red / Amber | | LED 3 | Digital Pin 6 | 5mm LED + 220 Ω Resistor | Amber / Yellow | | LED 4 | Digital Pin 7 | 5mm LED + 220 Ω Resistor | Yellow | | LED 5 | Digital Pin 8 | 5mm LED + 220 Ω Resistor | Green | | LED 6 | Digital Pin 9 | 5mm LED + 220 Ω Resistor | Green | | LED 7 | Digital Pin 10 | 5mm LED + 220 Ω Resistor | Blue | | LED 8 | Digital Pin 11 | 5mm LED + 220 Ω Resistor | Blue | | LED 9 | Digital Pin 12 | 5mm LED + 220 Ω Resistor | White | | LED 10 | Digital Pin 13 | 5mm LED + 220 Ω Resistor | White |
The 20 programmed effects are structured into four logical operational categories: