diff --git a/src/AudioBoard.h b/src/AudioBoard.h
index 0500645..414c382 100644
--- a/src/AudioBoard.h
+++ b/src/AudioBoard.h
@@ -23,16 +23,19 @@ class AudioBoard {
   }
 
   bool begin(){
+    AD_LOGD("AudioBoard::begin");
     pins->setSPIActiveForSD(codec_cfg.sd_active);
-    AD_LOGD("AudioBoard::pins::begin");
-    bool result_pins = pins->begin();
-    AD_LOGD("AudioBoard::pins::begin::returned:%s", result_pins ? "true" : "false");
-    AD_LOGD("AudioBoard::driver::begin");
-    bool result_driver = driver->begin(codec_cfg, *pins);
-    AD_LOGD("AudioBoard::driver::begin::returned:%s", result_driver ? "true" : "false");
+    if (!pins->begin()){
+      AD_LOGE("AudioBoard::pins::begin failed");
+      return false;
+    }
+    if (!driver->begin(codec_cfg, *pins)){
+      AD_LOGE("AudioBoard::driver::begin failed");
+      return false;
+    }
     setVolume(DRIVER_DEFAULT_VOLUME);
-    AD_LOGD("AudioBoard::volume::set");
-    return result_pins && result_driver;
+    is_active = true;
+    return true;
   }
 
   /// Starts the processing
@@ -49,6 +52,7 @@ class AudioBoard {
 
   bool end(void) {
     pins->end();
+    is_active = false;
     return driver->end();
   }
   bool setMute(bool enable) { return driver->setMute(enable); }
@@ -57,10 +61,11 @@ class AudioBoard {
     return driver->setMute(enable, line); 
   }
   bool setVolume(int volume) {
+    AD_LOGD("setVolume: %d", volume);
     // when we get the volume we make sure that we report the same value
     // w/o rounding issues 
     this->volume = volume; 
-    return driver->setVolume(volume); 
+    return (is_active) ? driver->setVolume(volume) : false; 
   }
   int getVolume() { 
 #if DRIVER_REPORT_DRIVER_VOLUME
@@ -83,6 +88,7 @@ class AudioBoard {
   AudioDriver* driver = nullptr;
   int power_amp_line = ES8388_PA_LINE;
   int volume = -1;
+  bool is_active = false;
 };
 
 // -- Boards
diff --git a/src/Driver.h b/src/Driver.h
index 1bc79ef..a8bb044 100644
--- a/src/Driver.h
+++ b/src/Driver.h
@@ -192,18 +192,17 @@ class AudioDriver {
  public:
   /// Starts the processing
   virtual bool begin(CodecConfig codecCfg, DriverPins &pins) {
-    AD_LOGD("AudioDriver::begin:pins");
+    AD_LOGD("AudioDriver::begin");
     p_pins = &pins;
-    AD_LOGD("AudioDriver::begin:setSPI");
     pins.setSPIActiveForSD(codecCfg.sd_active);
-    AD_LOGD("AudioDriver::begin:setConfig");
-    int result = setConfig(codecCfg);
-    AD_LOGD("AudioDriver::begin:setPAPower");
+    if (!setConfig(codecCfg)){
+      AD_LOGE("setConfig has failed");
+      return false;
+    }
     setPAPower(true);
-    AD_LOGD("AudioDriver::begin:completed");
     // setup default volume
     setVolume(DRIVER_DEFAULT_VOLUME);
-    return result;
+    return true;
   }
   /// changes the configuration
   virtual bool setConfig(CodecConfig codecCfg) {
@@ -278,7 +277,8 @@ class AudioDriver {
     if (!i2c) {
       return &Wire;
     }
-    return i2c.value().p_wire;
+    TwoWire* result = i2c.value().p_wire;
+    return result != nullptr ? result : &Wire;
   }
 
   int getI2CAddress() {
@@ -760,15 +760,14 @@ class AudioDriverES8311Class : public AudioDriver {
   bool init(codec_config_t codec_cfg) {
     int mclk_src = pins().getPinID(PinFunction::MCLK_SOURCE);
     if (mclk_src == -1) {
-      AD_LOGI(
-          "Pin for PinFunction::MCLK_SOURCE not defined: we assume "
-          "FROM_MCLK_PIN");
       mclk_src = 0;  // = FROM_MCLK_PIN;
     }
+    AD_LOGI("MCLK_SOURCE: %d", mclk_src);
 
     // determine address from data
     if (i2c_address <= 0) i2c_address = getI2CAddress();
 
+    assert(getI2C()!=nullptr);
     return es8311_codec_init(&codec_cfg, getI2C(), mclk_src, i2c_address) ==
            RESULT_OK;
   }
diff --git a/src/DriverPins.h b/src/DriverPins.h
index a6af50d..ddc9e1e 100644
--- a/src/DriverPins.h
+++ b/src/DriverPins.h
@@ -141,7 +141,9 @@ struct PinsSPI {
 
 /**
  * @brief Default SPI pins for ESP32 Lyrat, AudioDriver etc
+ * CLK, MISO, MOSI, CS
  */
+
 static PinsSPI ESP32PinsSD{PinFunction::SD, 14, 2, 15, 13, SPI};
 
 /**
@@ -168,7 +170,7 @@ struct PinsI2C {
   GpioPin scl = -1;
   GpioPin sda = -1;
   bool set_active = true;
-  TwoWire *p_wire;
+  TwoWire *p_wire = &Wire;
   bool pinsAvailable() { return scl != -1 && sda != -1 && frequency != 0; }
   operator bool() { return pinsAvailable(); }
 
@@ -549,7 +551,9 @@ class PinsLyrat42Class : public DriverPins {
 class PinsLyratMiniClass : public DriverPins {
  public:
   PinsLyratMiniClass() {
-    // sd pins
+    // sd pins: CLK, MISO, MOSI, CS
+    //addSPI(PinFunction::SD, 14, 2, 15, 13, SPI);
+    //addSPI(PinFunction::SD, 18, 19, 23, 5, SPI);
     addSPI(ESP32PinsSD);
     // add i2c codec pins: scl, sda, port, frequency
     addI2C(PinFunction::CODEC, 23, 18);
@@ -557,18 +561,11 @@ class PinsLyratMiniClass : public DriverPins {
     addI2S(PinFunction::CODEC, 0, 5, 25, 26, 35, 0);
     addI2S(PinFunction::CODEC_ADC, 0, 32, 33, -1, 36, 1);
 
-    // add other pins
-    addPin(PinFunction::KEY, 5, PinLogic::InputActiveLow, 1);
-    addPin(PinFunction::KEY, 4, PinLogic::InputActiveLow, 2);
-    addPin(PinFunction::KEY, 2, PinLogic::InputActiveLow, 3);
-    addPin(PinFunction::KEY, 3, PinLogic::InputActiveLow, 4);
-    addPin(PinFunction::KEY, 1, PinLogic::InputActiveLow, 5);
-    //    addPin(PinFunction::KEY, 0, 6};
     addPin(PinFunction::HEADPHONE_DETECT, 19, PinLogic::InputActiveLow);
     addPin(PinFunction::PA, 21, PinLogic::Output);
     addPin(PinFunction::LED, 22, PinLogic::Output, 1);
     addPin(PinFunction::LED, 27, PinLogic::Output, 2);
-    addPin(PinFunction::MCLK_SOURCE, 0, PinLogic::Output);
+    addPin(PinFunction::MCLK_SOURCE, 0, PinLogic::Inactive);
   }
 };