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jackw01
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LICENSE
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LICENSE
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MIT License
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Copyright (c) 2016
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Copyright (c) 2016 jackw01
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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# led-ring-clock
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Arduino LED analog clock
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An unusual Arduino-based analog clock using an Adafruit NeoPixel ring as a display.
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This sketch requires the FastLED library, the Wire library (built-in), the EEPROM library (built-in), and the Adafruit RTClib.
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https://github.com/FastLED/FastLED
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https://github.com/adafruit/RTClib
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The NeoPixel ring is connected to digital pin 3. Momentary N/O button is connected to digital pin 4. 20K potentiometer is connected to power and ground on both sides and the wiper is connected to Analog 0. DS1307 RTC breakout is connected to default I2C pins. This code has only been tested with a ring of 24 NeoPixels, but should (hopefully) work with any size. The code should work on any ATmega328 based board
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BIN
led-ring-clock
Normal file
BIN
led-ring-clock
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Binary file not shown.
369
led-ring-clock.ino
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369
led-ring-clock.ino
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//
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// Copyright (c) 2016 jackw01
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// This code is distrubuted under the MIT License, see LICENSE for details
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//
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#include <FastLED.h>
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#include <Wire.h>
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#include <EEPROM.h>
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#include "RTClib.h"
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//
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// Adjust these variables to taste
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//
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// Pin Assignments
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const int pinLeds = 3;
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const int pinButton = 4;
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const int pinBrightness = 0;
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const int neoPixelRingSize = 24; // Number of NeoPixels in ring
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// Default colors
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CRGB red = CRGB(255, 25, 0);
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CRGB orange = CRGB(255, 78, 0);
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CRGB yellow = CRGB(255, 237, 0);
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CRGB green = CRGB(0, 255, 23);
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CRGB cyan = CRGB(0, 247, 255);
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CRGB blue = CRGB(0, 21, 255);
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CRGB magenta = CRGB(190, 0, 255);
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CRGB white = CRGB(255, 255, 255);
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CRGB off = CRGB(0, 0, 0);
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// Clock face colors
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// red, orange, yellow, green, cyan, blue, magenta, and white are acceptable, along with CRGB(r, g, b)
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const int colorSchemeMax = 7;
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const CRGB colorSchemes[colorSchemeMax + 1][4] = {{off, // Color when only one is needed (deprecated)
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red, // Color for hour display
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green, // Color for minute display
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blue}, // Color for second display
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{CRGB(0, 0, 0), 0xffa54f, 0xffa048, CRGB(0, 130, 255)},
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{CRGB(0, 0, 0), 0xffa54f, 0xffa048, CRGB(255, 25, 0)},
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{CRGB(0, 0, 0), 0xffffff, 0xffffff, CRGB(0, 130, 255)},
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{CRGB(0, 0, 0), 0xffffff, 0xffffff, CRGB(255, 25, 0)},
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{CRGB(0, 0, 0), CRGB(64, 0, 128), CRGB(255, 72, 0), CRGB(255, 164, 0)},
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{CRGB(0, 0, 0), CRGB(255, 25, 0), CRGB(255, 164, 0), CRGB(255, 224, 0)},
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{CRGB(0, 0, 0), CRGB(0, 0, 255), CRGB(0, 164, 255), CRGB(0, 224, 255)}};
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// Setup ends
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// Code starts here
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const uint8_t PROGMEM gamma[] = {
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1,
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1, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2,
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2, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5,
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5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 9, 9, 9, 10,
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10, 10, 11, 11, 11, 12, 12, 13, 13, 13, 14, 14, 15, 15, 16, 16,
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17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22, 23, 24, 24, 25,
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25, 26, 27, 27, 28, 29, 29, 30, 31, 32, 32, 33, 34, 35, 35, 36,
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37, 38, 39, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 50,
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51, 52, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 66, 67, 68,
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69, 70, 72, 73, 74, 75, 77, 78, 79, 81, 82, 83, 85, 86, 87, 89,
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90, 92, 93, 95, 96, 98, 99,101,102,104,105,107,109,110,112,114,
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115,117,119,120,122,124,126,127,129,131,133,135,137,138,140,142,
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144,146,148,150,152,154,156,158,160,162,164,167,169,171,173,175,
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177,180,182,184,186,189,191,193,196,198,200,203,205,208,210,213,
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215,218,220,223,225,228,231,233,236,239,241,244,247,249,252,255 };
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CRGB leds[neoPixelRingSize];
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RTC_DS1307 rtc;
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int clockMode, colorScheme;
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int clockModeMax = 4;
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int buttonState = 0;
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const int minBrightness = 3;
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int counter = 0;
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int timer = 0;
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CRGB handColor, hourColor, minuteColor, secondColor;
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void setup() {
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Serial.begin(115200);
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// Init FastLED
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FastLED.addLeds<NEOPIXEL, pinLeds>(leds, neoPixelRingSize);
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//FastLED.setCorrection(TypicalSMD5050);
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FastLED.setTemperature(Halogen);
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FastLED.show();
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Wire.begin();
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rtc.begin();
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pinMode(pinButton, INPUT);
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colorScheme = EEPROM.read(0);
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clockMode = EEPROM.read(1);
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handColor = colorSchemes[colorScheme][0];
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hourColor = colorSchemes[colorScheme][1];
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minuteColor = colorSchemes[colorScheme][2];
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secondColor = colorSchemes[colorScheme][3];
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}
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void loop() {
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if (digitalRead(pinButton) == LOW && counter >= 14) {
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counter = 0;
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delay(280);
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if (digitalRead(pinButton) == LOW) {
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counter = 0;
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colorScheme ++;
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if (colorScheme > colorSchemeMax) colorScheme = 0;
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EEPROM.write(0, colorScheme);
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handColor = colorSchemes[colorScheme][0];
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hourColor = colorSchemes[colorScheme][1];
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minuteColor = colorSchemes[colorScheme][2];
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secondColor = colorSchemes[colorScheme][3];
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} else {
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clockMode ++;
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if (clockMode > clockModeMax) clockMode = 0;
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EEPROM.write(1, clockMode);
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}
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}
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showClock();
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delay(20);
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counter ++;
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if (counter > 40) counter = 40;
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timer ++;
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if (timer > 255) timer = 0;
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}
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void showClock() {
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int brightnessPotValue = map(analogRead(pinBrightness), 0, 1023, minBrightness, 255);
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FastLED.setBrightness(brightnessPotValue);
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if (clockMode == 0) ringClock();
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else if (clockMode == 1) dotClock();
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else if (clockMode == 2) rainbowDotClock();
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else if (clockMode == 3) timeColorClock();
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else if (clockMode == 4) glowClock();
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}
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// Show a ring clock
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void ringClock() {
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clearLeds();
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DateTime now = rtc.now();
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int newHour;
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int newMinute;
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int newSecond;
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int hour;
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if (now.hour() > 12) hour = (now.hour() - 12) * (neoPixelRingSize / 12);
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else hour = now.hour() * (neoPixelRingSize / 12);
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newHour = hour + int(map(now.minute(), 0, 59, 0, (neoPixelRingSize / 12) - 1));
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newMinute = int(map(now.minute(), 0, 59, 0, neoPixelRingSize - 1));
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newSecond = int(map(now.second(), 0, 59, 0, neoPixelRingSize - 1));
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if (newMinute > newHour) {
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for (int i = 0; i < newMinute; i++) leds[i] = minuteColor;
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for (int i = 0; i < newHour; i++) leds[i] = hourColor;
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} else {
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for (int i = 0; i < newHour; i++) leds[i] = hourColor;
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for (int i = 0; i < newMinute; i++) leds[i] = minuteColor;
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}
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leds[newSecond] = secondColor;
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FastLED.show();
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}
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// Show a more traditional dot clock
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void dotClock() {
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clearLeds();
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DateTime now = rtc.now();
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int newHour;
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int newMinute;
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int newSecond;
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int hour;
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if (now.hour() > 12) hour = (now.hour() - 12) * (neoPixelRingSize / 12);
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else hour = now.hour() * (neoPixelRingSize / 12);
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newHour = hour + int(map(now.minute(), 0, 59, 0, (neoPixelRingSize / 12) - 1));
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newMinute = int(map(now.minute(), 0, 59, 0, neoPixelRingSize - 1));
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newSecond = int(map(now.second(), 0, 59, 0, neoPixelRingSize - 1));
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for (int i = newHour - 1; i < newHour + 2; i++) leds[wrap(i)] = hourColor;
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leds[newMinute] = minuteColor;
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leds[newSecond] = secondColor;
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FastLED.show();
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}
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// Show a dot clock with hands that change color based on their position
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void rainbowDotClock() {
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clearLeds();
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DateTime now = rtc.now();
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int newHour;
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int newMinute;
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int newSecond;
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int hour;
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if (now.hour() > 12) hour = (now.hour() - 12) * (neoPixelRingSize / 12);
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else hour = now.hour() * (neoPixelRingSize / 12);
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newHour = hour + int(map(now.minute(), 0, 59, 0, (neoPixelRingSize / 12) - 1));
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newMinute = int(map(now.minute(), 0, 59, 0, neoPixelRingSize - 1));
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newSecond = int(map(now.second(), 0, 59, 0, neoPixelRingSize - 1));
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CRGB newHourColor = Wheel(int(map(newHour, 0, 12, 0, 255)));
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CRGB newMinuteColor = Wheel(int(map(now.minute(), 0, 59, 0, 255)));
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CRGB newSecondColor = Wheel(int(map(now.second(), 0, 59, 0, 255)));
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for (int i = newHour - 1; i < newHour + 2; i++) leds[wrap(i)] = newHourColor;
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leds[newMinute] = newMinuteColor;
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leds[newSecond] = newSecondColor;
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FastLED.show();
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}
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// Show a dot clock where the color is based on the time
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void timeColorClock() {
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clearLeds();
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DateTime now = rtc.now();
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int newHour;
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int newMinute;
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int newSecond;
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int decimalHour;
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int hour;
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if (now.hour() > 12) hour = (now.hour() - 12) * (neoPixelRingSize / 12);
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else hour = now.hour() * (neoPixelRingSize / 12);
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newHour = hour + int(map(now.minute(), 0, 59, 0, (neoPixelRingSize / 12) - 1));
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newMinute = int(map(now.minute(), 0, 59, 0, neoPixelRingSize - 1));
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newSecond = int(map(now.second(), 0, 59, 0, neoPixelRingSize - 1));
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decimalHour = now.hour() + map(now.minute() + map(now.second(), 0, 59, 0, 1), 0, 59, 0, 1);
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CRGB pixelColor = Wheel(map((20 - decimalHour) % 24, 0, 24, 0, 255));
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for (int i = newHour - 1; i < newHour + 2; i++) leds[wrap(i)] = pixelColor;
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leds[newMinute] = pixelColor;
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leds[newSecond] = pixelColor;
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FastLED.show();
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}
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// Show a dot clock where the hands overlap with additive blending
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void glowClock() {
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clearLeds();
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DateTime now = rtc.now();
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int newHour;
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int newMinute;
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int newSecond;
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int hour;
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if (now.hour() > 12) hour = (now.hour() - 12) * (neoPixelRingSize / 12);
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else hour = now.hour() * (neoPixelRingSize / 12);
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newHour = hour + int(map(now.minute(), 0, 59, 0, (neoPixelRingSize / 12) - 1));
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newMinute = int(map(now.minute(), 0, 59, 0, neoPixelRingSize - 1));
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newSecond = int(map(now.second(), 0, 59, 0, neoPixelRingSize - 1));
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for (int i = -6; i < neoPixelRingSize + 6; i++) {
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int j;
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for (j = 0; j <= 4; j++) {
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if (newHour + j == i || newHour - j == i) blendAdd(wrap(i), CRGB(255, 0, 0), 1 - mapFloat(j, 0, 6, 0.1, 0.99));
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}
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for (j = 0; j <= 2; j++) {
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if (newMinute + j == i || newMinute - j == i) blendAdd(wrap(i), CRGB(0, 255, 0), 1 - mapFloat(j, 0, 3, 0.1, 0.99));
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}
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for (j = 0; j <= 1; j++) {
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if (newSecond + j == i || newSecond - j == i) blendAdd(wrap(i), CRGB(0, 0, 255), 1 - mapFloat(j, 0, 1, 0.1, 0.65));
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}
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}
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FastLED.show();
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}
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void clearLeds() {
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for (int i = 0; i < neoPixelRingSize; i++) leds[i] = CRGB(0, 0, 0);
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}
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// Enhanced additive blending
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void blendAdd(int position, CRGB color, double brightness) {
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leds[position].r += color.r * brightness;
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leds[position].g += color.g * brightness;
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leds[position].b += color.b * brightness;
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}
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// Wrap around LED ring
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int wrap(int i) {
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if (i >= neoPixelRingSize) return i - neoPixelRingSize;
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else if (i < 0) return neoPixelRingSize + i;
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else return i;
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}
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// Because Arduino does not
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float mapFloat(float x, float in_min, float in_max, float out_min, float out_max) {
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return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
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}
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// Input a value 0 to 255 to get a color value.
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// The colours are a transition r - g - b - back to r.
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CRGB Wheel(byte WheelPos) {
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WheelPos = 255 - WheelPos;
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if (WheelPos < 85) return CRGB(255 - WheelPos * 3, 0, WheelPos * 3);
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else if (WheelPos < 170) {
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WheelPos -= 85;
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return CRGB(0, WheelPos * 3, 255 - WheelPos * 3);
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} else {
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WheelPos -= 170;
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return CRGB(WheelPos * 3, 255 - WheelPos * 3, 0);
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}
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}
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BIN
led-ring-clock.png
Normal file
BIN
led-ring-clock.png
Normal file
Binary file not shown.
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After Width: | Height: | Size: 362 KiB |
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