Fixed twinkle crash with > 255 LEDs. Updated to latest FastLED ESP32 parallel output. Added multiple strip setup. Added power management.

Author: jasoncoon

data/js/app.js

@@ -431,7 +431,12 @@ function postColor(name, value) {
   $.post(urlBase + "fieldValue?name=" + name + "&value=" + "&r=" + value.r + "&g=" + value.g + "&b=" + value.b, body, function(data) {
     $("#status").html("Set " + name + ": " + data);
   })
-  .fail(function(textStatus, errorThrown) { $("#status").html("Fail: " + textStatus + " " + errorThrown); });
+  .fail(
+    function(jqXHR, textStatus, errorThrown) {
+      console.error(textStatus);
+      console.error(errorThrown);
+      $("#status").html("Fail: " + textStatus + " " + errorThrown);
+    });
 }
 
 function delayPostColor(name, value) {

esp32-fastled-webserver.ino

@@ -46,7 +46,7 @@ uint8_t currentPatternIndex = 0; // Index number of which pattern is current
 uint8_t gHue = 0; // rotating "base color" used by many of the patterns
 
 uint8_t power = 1;
-uint8_t brightness = 64;
+uint8_t brightness = 8;
 
 uint8_t speed = 30;
 
@@ -69,13 +69,16 @@ unsigned long paletteTimeout = 0;
 
 #define ARRAY_SIZE(A) (sizeof(A) / sizeof((A)[0]))
 
-#define DATA_PIN    12
+#define DATA_PIN    12 // pins tested so far on the Feather ESP32: 13, 12, 27, 33, 15, 32, 14, SCL
 //#define CLK_PIN   4
 #define LED_TYPE    WS2812B
-#define COLOR_ORDER GRB
-#define NUM_LEDS    4 * 14
+#define COLOR_ORDER RGB
+#define NUM_STRIPS 8
+#define NUM_LEDS_PER_STRIP 100
+#define NUM_LEDS NUM_LEDS_PER_STRIP * NUM_STRIPS
 CRGB leds[NUM_LEDS];
 
+#define MILLI_AMPS         4000 // IMPORTANT: set the max milli-Amps of your power supply (4A = 4000mA)
 #define FRAMES_PER_SECOND  120
 
 // -- The core to run FastLED.show()
@@ -107,7 +110,6 @@ static TaskHandle_t userTaskHandle = 0;
 void FastLEDshowESP32()
 {
   if (userTaskHandle == 0) {
-    const TickType_t xMaxBlockTime = pdMS_TO_TICKS( 200 );
     // -- Store the handle of the current task, so that the show task can
     //    notify it when it's done
     userTaskHandle = xTaskGetCurrentTaskHandle();
@@ -116,6 +118,7 @@ void FastLEDshowESP32()
     xTaskNotifyGive(FastLEDshowTaskHandle);
 
     // -- Wait to be notified that it's done
+    const TickType_t xMaxBlockTime = pdMS_TO_TICKS( 200 );
     ulTaskNotifyTake(pdTRUE, xMaxBlockTime);
     userTaskHandle = 0;
   }
@@ -126,11 +129,10 @@ void FastLEDshowESP32()
 */
 void FastLEDshowTask(void *pvParameters)
 {
-  const TickType_t xMaxBlockTime = pdMS_TO_TICKS( 500 );
   // -- Run forever...
   for (;;) {
     // -- Wait for the trigger
-    ulTaskNotifyTake(pdTRUE, xMaxBlockTime);
+    ulTaskNotifyTake(pdTRUE, portMAX_DELAY);
 
     // -- Do the show (synchronously)
     FastLED.show();
@@ -181,15 +183,29 @@ void setup() {
   SPIFFS.begin();
   listDir(SPIFFS, "/", 1);
 
-  loadFieldsFromEEPROM(fields, fieldCount);
+//  loadFieldsFromEEPROM(fields, fieldCount);
 
   setupWifi();
   setupWeb();
 
-  // tell FastLED about the LED strip configuration
-  FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
+  // three-wire LEDs (WS2811, WS2812, NeoPixel)
+  //  FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
+
+  // four-wire LEDs (APA102, DotStar)
   //FastLED.addLeds<LED_TYPE,DATA_PIN,CLK_PIN,COLOR_ORDER>(leds, NUM_LEDS).setCorrection(TypicalLEDStrip);
 
+  // Parallel output: 13, 12, 27, 33, 15, 32, 14, SCL
+  FastLED.addLeds<LED_TYPE, 13, COLOR_ORDER>(leds, 0, NUM_LEDS_PER_STRIP).setCorrection(TypicalLEDStrip);
+  FastLED.addLeds<LED_TYPE, 12, COLOR_ORDER>(leds, NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP).setCorrection(TypicalLEDStrip);
+  FastLED.addLeds<LED_TYPE, 27, COLOR_ORDER>(leds, 2 * NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP).setCorrection(TypicalLEDStrip);
+  FastLED.addLeds<LED_TYPE, 33, COLOR_ORDER>(leds, 3 * NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP).setCorrection(TypicalLEDStrip);
+  FastLED.addLeds<LED_TYPE, 15, COLOR_ORDER>(leds, 4 * NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP).setCorrection(TypicalLEDStrip);
+  FastLED.addLeds<LED_TYPE, 32, COLOR_ORDER>(leds, 5 * NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP).setCorrection(TypicalLEDStrip);
+  FastLED.addLeds<LED_TYPE, 14, COLOR_ORDER>(leds, 6 * NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP).setCorrection(TypicalLEDStrip);
+  FastLED.addLeds<LED_TYPE, SCL, COLOR_ORDER>(leds, 7 * NUM_LEDS_PER_STRIP, NUM_LEDS_PER_STRIP).setCorrection(TypicalLEDStrip);
+
+  FastLED.setMaxPowerInVoltsAndMilliamps(5, MILLI_AMPS);
+  
   // set master brightness control
   FastLED.setBrightness(brightness);
 

fields.h

@@ -158,7 +158,7 @@ String setSolidColor(uint8_t r, uint8_t g, uint8_t b)
 {
   solidColor = CRGB(r, g, b);
 
-  return String(solidColor.r) + "," + String(solidColor.g) + "," + String(solidColor.b);
+  return "\"" + String(solidColor.r) + "," + String(solidColor.g) + "," + String(solidColor.b) + "\"";
 }
 
 String setSolidColor(CRGB color) {

twinkleFox.h

@@ -194,7 +194,7 @@ void drawTwinkles()
 
   uint8_t backgroundBrightness = bg.getAverageLight();
 
-  for(uint8_t i = 0; i < NUM_LEDS; i++) {
+  for(uint16_t i = 0; i < NUM_LEDS; i++) {
     CRGB& pixel = leds[i];
 
     PRNG16 = (uint16_t)(PRNG16 * 2053) + 1384; // next 'random' number