diff --git a/include/globals.h b/include/globals.h
index 8d57f1dd..35adfb7e 100644
--- a/include/globals.h
+++ b/include/globals.h
@@ -5,7 +5,9 @@
 #include <Arduino.h>
 
 // Time functions
+#ifdef HAS_RTC
 #include <RtcDateTime.h>
+#endif
 #include <Ticker.h>
 
 // std::set for unified array functions
diff --git a/include/led.h b/include/led.h
index 6bbef12d..4bf4c0d8 100644
--- a/include/led.h
+++ b/include/led.h
@@ -1,9 +1,12 @@
 #ifndef _LED_H
 #define _LED_H
 
-#ifdef RGB_LED_COUNT
-#include <SmartLeds.h>
+#ifdef HAS_RGB_LED
+#define FASTLED_INTERNAL
+#include <FastLED.h>
+#include "libpax_helpers.h"
 #endif
+
 #ifdef HAS_LORA
 #include "lorawan.h"
 #endif
@@ -12,39 +15,26 @@
 #define RGB_LED_COUNT 1
 #endif
 
-// value for HSL color
-// see http://www.workwithcolor.com/blue-color-hue-range-01.htm
-#define COLOR_RED 0
-#define COLOR_ORANGE 30
-#define COLOR_ORANGE_YELLOW 45
-#define COLOR_YELLOW 60
-#define COLOR_YELLOW_GREEN 90
-#define COLOR_GREEN 120
-#define COLOR_GREEN_CYAN 165
-#define COLOR_CYAN 180
-#define COLOR_CYAN_BLUE 210
-#define COLOR_BLUE 240
-#define COLOR_BLUE_MAGENTA 275
-#define COLOR_MAGENTA 300
-#define COLOR_PINK 350
-#define COLOR_WHITE 360
-#define COLOR_NONE 999
-
-struct RGBColor {
-  uint8_t R;
-  uint8_t G;
-  uint8_t B;
-};
-
 enum led_states { LED_OFF, LED_ON };
 
+enum colors {
+  COLOR_WHITE = 0xFFFFFF,
+  COLOR_NONE = 0x000000,
+  COLOR_CYAN = 0x00FFFF,
+  COLOR_BLUE = 0x0000FF,
+  COLOR_GREEN = 0x008000,
+  COLOR_YELLOW = 0xFFFF00,
+  COLOR_ORANGE = 0xFFA500,
+  COLOR_RED = 0xFF0000,
+  COLOR_PINK = 0xFFC0CB
+};
+
 extern TaskHandle_t ledLoopTask;
 
-// Exported Functions
-void rgb_set_color(uint16_t hue);
-void blink_LED(uint16_t set_color, uint16_t set_blinkduration);
+void rgb_led_init(void);
+void rgb_set_color(uint32_t color);
 void ledLoop(void *parameter);
-void switch_LED(uint8_t state);
-void switch_LED1(uint8_t state);
+void switch_LED(led_states state);
+void switch_LED1(led_states state);
 
 #endif
\ No newline at end of file
diff --git a/include/sdcard.h b/include/sdcard.h
index 1f2b0bca..4b1145eb 100644
--- a/include/sdcard.h
+++ b/include/sdcard.h
@@ -33,6 +33,10 @@
 #elif HAS_SDCARD == 2 // MMC interface
 #include "driver/sdmmc_host.h"
 
+#ifndef SDCARD_SLOTCONFIG
+#define SDCARD_SLOTCONFIG SDMMC_SLOT_CONFIG_DEFAULT()
+#endif
+
 #ifndef SDCARD_SLOTWIDTH
 #define SDCARD_SLOTWIDTH 1
 #endif
diff --git a/platformio_orig.ini b/platformio_orig.ini
index e2005bc5..979933bf 100644
--- a/platformio_orig.ini
+++ b/platformio_orig.ini
@@ -67,7 +67,7 @@ lib_deps_display =
 lib_deps_ledmatrix =
     seeed-studio/Ultrathin_LED_Matrix @ ^1.0.0
 lib_deps_rgbled =
-    https://github.com/RoboticsBrno/SmartLeds.git
+    fastled/FastLED @ ^3.5.0
 lib_deps_gps =
     mikalhart/TinyGPSPlus @ ^1.0.3
 lib_deps_sensors =
diff --git a/src/hal/eboxtube.h b/src/hal/eboxtube.h
index e95b6940..7d2f5b86 100644
--- a/src/hal/eboxtube.h
+++ b/src/hal/eboxtube.h
@@ -15,7 +15,7 @@
 
 #define HAS_LED (22)     // Green LED on board
 #define RGB_LED_COUNT 1 // we have 1 LED
-#define HAS_RGB_LED SmartLed rgb_led(LED_WS2812, RGB_LED_COUNT, GPIO_NUM_2) // WS2812B RGB LED on board
+#define HAS_RGB_LED FastLED.addLeds<WS2812, GPIO_NUM_2, GRB>(leds, RGB_LED_COUNT);
 #define HAS_BUTTON (0)   // button "FLASH" on board
 #define DISABLE_BROWNOUT 1      // comment out if you want to keep brownout feature
 
diff --git a/src/hal/fipy.h b/src/hal/fipy.h
index f904d716..dd8a5da5 100644
--- a/src/hal/fipy.h
+++ b/src/hal/fipy.h
@@ -13,7 +13,8 @@
 
 #define CFG_sx1272_radio 1
 #define HAS_LED NOT_A_PIN      // FiPy has no on board LED, so we use RGB LED
-#define HAS_RGB_LED SmartLed rgb_led(LED_WS2812, 1, GPIO_NUM_0) // WS2812B RGB LED on GPIO0
+#define RGB_LED_COUNT 1 // we have 1 LED
+#define HAS_RGB_LED FastLED.addLeds<WS2812, GPIO_NUM_0, GRB>(leds, RGB_LED_COUNT);
 #define BOARD_HAS_PSRAM        // use extra 4MB extern RAM
 
 // Pins for LORA chip SPI interface, reset line and interrupt lines
diff --git a/src/hal/generic.h b/src/hal/generic.h
index 26d465e3..ef691330 100644
--- a/src/hal/generic.h
+++ b/src/hal/generic.h
@@ -72,7 +72,8 @@
 
 #define HAS_LED (21) // on board  LED
 #define HAS_BUTTON (39) // on board button
-#define HAS_RGB_LED SmartLed rgb_led(LED_WS2812, 1, GPIO_NUM_0) // WS2812B RGB LED on GPIO0
+#define RGB_LED_COUNT 1 // we have 1 LED
+#define HAS_RGB_LED FastLED.addLeds<WS2812, GPIO_NUM_0, GRB>(leds, RGB_LED_COUNT);
 
 // GPS settings
 #define HAS_GPS 1 // use on board GPS
diff --git a/src/hal/lolin32litelora.h b/src/hal/lolin32litelora.h
index d3ae2133..232f9adb 100644
--- a/src/hal/lolin32litelora.h
+++ b/src/hal/lolin32litelora.h
@@ -17,7 +17,8 @@
 //#define MY_DISPLAY_FLIP  1 // uncomment this for rotated display
 #define HAS_LED       22  // ESP32 GPIO12 (pin22) On Board LED (set to NOT_A_PIN to disable)
 #define LED_ACTIVE_LOW 1  // Onboard LED is active when pin is LOW
-#define HAS_RGB_LED SmartLed rgb_led(LED_WS2812, 1, GPIO_NUM_13) // ESP32 GPIO13 (pin13) On Board Shield WS2812B RGB LED
+#define RGB_LED_COUNT 1 // we have 1 LED
+#define HAS_RGB_LED FastLED.addLeds<WS2812, GPIO_NUM_0, GRB>(leds, RGB_LED_COUNT);
 #define HAS_BUTTON    15  // ESP32 GPIO15 (pin15) Button is on the LoraNode32 shield
 #define BUTTON_PULLUP  1  // Button need pullup instead of default pulldown
 
diff --git a/src/hal/lolin32lora.h b/src/hal/lolin32lora.h
index 15cdb331..c53aaf47 100644
--- a/src/hal/lolin32lora.h
+++ b/src/hal/lolin32lora.h
@@ -18,7 +18,8 @@
 #define HAS_LED NOT_A_PIN // Led os on same pin as Lora SS pin, to avoid problems, we don't use it
 #define LED_ACTIVE_LOW 1  // Onboard LED is active when pin is LOW
                           // Anyway shield is on over the LoLin32 board, so we won't be able to see this LED
-#define HAS_RGB_LED SmartLed rgb_led(LED_WS2812, 1, GPIO_NUM_13) // ESP32 GPIO13 (pin13) On Board Shield WS2812B RGB LED
+#define RGB_LED_COUNT 1 // we have 1 LED
+#define HAS_RGB_LED FastLED.addLeds<WS2812, GPIO_NUM_13, GRB>(leds, RGB_LED_COUNT);
 #define HAS_BUTTON    15  // ESP32 GPIO15 (pin15) Button is on the LoraNode32 shield
 #define BUTTON_PULLUP  1  // Button need pullup instead of default pulldown
 
diff --git a/src/hal/lopy.h b/src/hal/lopy.h
index e196ee1a..0946c046 100644
--- a/src/hal/lopy.h
+++ b/src/hal/lopy.h
@@ -12,7 +12,8 @@
 #define HAS_LORA 1       // comment out if device shall not send data via LoRa
 #define CFG_sx1272_radio 1
 #define HAS_LED NOT_A_PIN // LoPy4 has no on board mono LED, we use on board RGB LED
-#define HAS_RGB_LED SmartLed rgb_led(LED_WS2812, 1, GPIO_NUM_0) // WS2812B RGB LED on GPIO0 (P2)
+#define RGB_LED_COUNT 1 // we have 1 LED
+#define HAS_RGB_LED FastLED.addLeds<WS2812, GPIO_NUM_0, GRB>(leds, RGB_LED_COUNT);
 
 // Note: Pins for LORA chip SPI interface come from board file pins_arduino.h
 
diff --git a/src/hal/lopy4.h b/src/hal/lopy4.h
index 0c5999f0..cb960fa7 100644
--- a/src/hal/lopy4.h
+++ b/src/hal/lopy4.h
@@ -21,7 +21,8 @@
 #define CFG_sx1276_radio 1
 #define HAS_LED NOT_A_PIN // LoPy4 has no on board mono LED, we use on board RGB LED
 #define RGB_LED_COUNT 1 // we have 1 LEDs
-#define HAS_RGB_LED SmartLed rgb_led(LED_WS2812, RGB_LED_COUNT, GPIO_NUM_0) // WS2812B RGB LED on GPIO0 (P2)
+#define RGB_LED_COUNT 1 // we have 1 LED
+#define HAS_RGB_LED FastLED.addLeds<WS2812, GPIO_NUM_0, GRB>(leds, RGB_LED_COUNT);
 #define BOARD_HAS_PSRAM // use extra 4MB extern RAM
 
 // Note: Pins for LORA chip SPI interface come from board file pins_arduino.h
diff --git a/src/hal/m5fire.h b/src/hal/m5fire.h
index 156cd494..16d3b2cb 100644
--- a/src/hal/m5fire.h
+++ b/src/hal/m5fire.h
@@ -33,7 +33,8 @@
 #define HAS_LED NOT_A_PIN // no on board LED (?)
 #define RGB_LED_COUNT 10
 
-#define HAS_RGB_LED SmartLed rgb_led(LED_SK6812, RGB_LED_COUNT, GPIO_NUM_15) // LED_SK6812 RGB LED on GPIO15
+#define RGB_LED_COUNT 1 // we have 1 LED
+#define HAS_RGB_LED FastLED.addLeds<SK6812, GPIO_NUM_15, GRB>(leds, RGB_LED_COUNT);
 #define HAS_BUTTON (39) // on board button A
 
 // power management settings
diff --git a/src/hal/octopus32.h b/src/hal/octopus32.h
index b7de8b12..6b5b66c4 100644
--- a/src/hal/octopus32.h
+++ b/src/hal/octopus32.h
@@ -22,7 +22,8 @@
 
 #define HAS_LED        13  // ESP32 GPIO12 (pin22) On Board LED
 //#define LED_ACTIVE_LOW 1  // Onboard LED is active when pin is LOW
-//#define HAS_RGB_LED SmartLed rgb_led(LED_WS2812, 1, GPIO_NUM_13) // ESP32 GPIO13 (pin13) On Board Shield WS2812B RGB LED
+//#define RGB_LED_COUNT 1 // we have 1 LED
+//#define HAS_RGB_LED FastLED.addLeds<WS2812, GPIO_NUM_13, GRB>(leds, RGB_LED_COUNT);
 //#define HAS_BUTTON    15  // ESP32 GPIO15 (pin15) Button is on the LoraNode32 shield
 //#define BUTTON_PULLUP  1  // Button need pullup instead of default pulldown
 
diff --git a/src/led.cpp b/src/led.cpp
index ecd5b99a..ee6c7e29 100644
--- a/src/led.cpp
+++ b/src/led.cpp
@@ -2,94 +2,36 @@
 #include "globals.h"
 #include "led.h"
 
-led_states LEDState = LED_OFF; // LED state global for state machine
+static led_states LEDState = LED_OFF; // LED state global for state machine
 led_states previousLEDState =
     LED_ON; // This will force LED to be off at boot since State is OFF
 
 TaskHandle_t ledLoopTask;
 
-uint16_t LEDColor = COLOR_NONE, LEDBlinkDuration = 0; // state machine variables
-unsigned long LEDBlinkStarted = 0; // When (in millis() led blink started)
+uint32_t LEDColor = COLOR_NONE, LEDBlinkDuration = 0; // state machine variables
+static unsigned long LEDBlinkStarted =
+    0; // When (in millis() led blink started)
 
 #ifdef HAS_RGB_LED
-
-// RGB Led instance
-HAS_RGB_LED;
-
-float rgb_CalcColor(float p, float q, float t) {
-  if (t < 0.0f)
-    t += 1.0f;
-  if (t > 1.0f)
-    t -= 1.0f;
-
-  if (t < 1.0f / 6.0f)
-    return p + (q - p) * 6.0f * t;
-
-  if (t < 0.5f)
-    return q;
-
-  if (t < 2.0f / 3.0f)
-    return p + ((q - p) * (2.0f / 3.0f - t) * 6.0f);
-
-  return p;
-}
-
-// ------------------------------------------------------------------------
-// Hue, Saturation, Lightness color members
-// HslColor using H, S, L values (0.0 - 1.0)
-// L should be limited to between (0.0 - 0.5)
-// ------------------------------------------------------------------------
-RGBColor rgb_hsl2rgb(float h, float s, float l) {
-  RGBColor RGB_color;
-  float r;
-  float g;
-  float b;
-
-  if (s == 0.0f || l == 0.0f) {
-    r = g = b = l; // achromatic or black
-  } else {
-    float q = l < 0.5f ? l * (1.0f + s) : l + s - (l * s);
-    float p = 2.0f * l - q;
-    r = rgb_CalcColor(p, q, h + 1.0f / 3.0f);
-    g = rgb_CalcColor(p, q, h);
-    b = rgb_CalcColor(p, q, h - 1.0f / 3.0f);
-  }
-
-  RGB_color.R = (uint8_t)(r * 255.0f);
-  RGB_color.G = (uint8_t)(g * 255.0f);
-  RGB_color.B = (uint8_t)(b * 255.0f);
-
-  return RGB_color;
-}
-
-void rgb_set_color(uint16_t hue) {
-  if (hue == COLOR_NONE) {
-    // set Off
-    for (int i = 0; i < RGB_LED_COUNT; i++)
-      rgb_led[i] = Rgb(0, 0, 0);
-  } else {
-    // see http://www.workwithcolor.com/blue-color-hue-range-01.htm
-    // H (is color from 0..360) should be between 0.0 and 1.0
-    // S is saturation keep it to 1
-    // L is brightness should be between 0.0 and 0.5
-    // cfg.rgblum is between 0 and 100 (percent)
-    RGBColor target = rgb_hsl2rgb(hue / 360.0f, 1.0f, 0.005f * cfg.rgblum);
-    // uint32_t color = target.R<<16 | target.G<<8 | target.B;
-    for (int i = 0; i < RGB_LED_COUNT; i++)
-      rgb_led[i] = Rgb(target.R, target.G, target.B);
-  }
-  // Show
-  rgb_led.show();
-}
-
-#else
-
-// No RGB LED empty functions
-void rgb_set_color(uint16_t hue) {}
-
+CRGB leds[RGB_LED_COUNT];
 #endif
 
-void switch_LED(uint8_t state) {
+void rgb_set_color(uint32_t color) {
+#ifdef HAS_RGB_LED
+  for (int i = 0; i < RGB_LED_COUNT; i++)
+    leds[i] = CRGB(color);
+  FastLED.show();
+#endif
+}
+
+void rgb_led_init(void) {
+#ifdef HAS_RGB_LED
+  HAS_RGB_LED;
+  rgb_set_color(COLOR_NONE);
+#endif
+}
+
+void switch_LED(led_states state) {
 #if (HAS_LED != NOT_A_PIN)
   if (state == LED_ON) {
     // switch LED on
@@ -109,7 +51,7 @@ void switch_LED(uint8_t state) {
 #endif
 }
 
-void switch_LED1(uint8_t state) {
+void switch_LED1(led_states state) {
 #ifdef HAS_TWO_LED
   if (state == LED_ON) {
     // switch LED on
@@ -129,14 +71,6 @@ void switch_LED1(uint8_t state) {
 #endif // HAS_TWO_LED
 }
 
-void blink_LED(uint16_t set_color, uint16_t set_blinkduration) {
-#if (HAS_LED != NOT_A_PIN) || defined(HAS_RGB_LED)
-  LEDColor = set_color;                 // set color for RGB LED
-  LEDBlinkDuration = set_blinkduration; // duration
-  LEDBlinkStarted = millis();           // Time Start here
-  LEDState = LED_ON;                    // Let main set LED on
-#endif
-}
 
 #if (HAS_LED != NOT_A_PIN) || defined(HAS_RGB_LED)
 
@@ -215,4 +149,4 @@ void ledLoop(void *parameter) {
   } // while(1)
 };  // ledloop()
 
-#endif // #if (HAS_LED != NOT_A_PIN) || defined(HAS_RGB_LED)
+#endif // #if (HAS_LED != NOT_A_PIN) || defined(HAS_RGB_LED)
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 00a8bf2e..a1af483c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -201,26 +201,26 @@ void setup() {
 #endif
 
 // initialize leds
+#ifdef HAS_RGB_LED
+  rgb_led_init();
+  strcat_P(features, " RGB");
+#endif
+
 #if (HAS_LED != NOT_A_PIN)
   pinMode(HAS_LED, OUTPUT);
   strcat_P(features, " LED");
-
 #ifdef LED_POWER_SW
   pinMode(LED_POWER_SW, OUTPUT);
   digitalWrite(LED_POWER_SW, LED_POWER_ON);
 #endif
-
 #ifdef HAS_TWO_LED
   pinMode(HAS_TWO_LED, OUTPUT);
   strcat_P(features, " LED2");
 #endif
-
-// use LED for power display if we have additional RGB LED, else for status
+// use simple LED for power display if we have additional RGB LED, else for status
 #ifdef HAS_RGB_LED
   switch_LED(LED_ON);
-  strcat_P(features, " RGB");
 #endif
-
 #endif // HAS_LED
 
 #if (HAS_LED != NOT_A_PIN) || defined(HAS_RGB_LED)
diff --git a/src/sdcard.cpp b/src/sdcard.cpp
index d4c23e46..54414233 100644
--- a/src/sdcard.cpp
+++ b/src/sdcard.cpp
@@ -132,7 +132,7 @@ bool sdcard_init(bool create) {
   // has these signals.
   // Default config for SDMMC_HOST_DEFAULT (4-bit bus width, slot 1)
   // https://docs.espressif.com/projects/esp-idf/en/latest/esp32/api-reference/peripherals/sdmmc_host.html
-  sdmmc_slot_config_t slot_config = SDMMC_SLOT_CONFIG_DEFAULT();
+  sdmmc_slot_config_t slot_config = SDCARD_SLOTCONFIG;
 
   // Set 1-line or 4-line SD mode (default is 1-line)
   slot_config.width = SDCARD_SLOTWIDTH;