diff --git a/src/controller.cpp b/src/controller.cpp
index c686d5f..b338d46 100644
--- a/src/controller.cpp
+++ b/src/controller.cpp
@@ -73,7 +73,14 @@ bool Controller::stop() {
 bool Controller::StandUp() {
     LOG_INFO("Standing up");
     try {
-        return sc_ && sc_->StandUp() == 0;
+        if (!sc_) {
+            LOG_ERROR("SportClient not initialized");
+            return false;
+        }
+        
+        int32_t result = sc_->StandUp();
+        LOG_INFO("StandUp API returned: " + std::to_string(result));
+        return result == 0;
     } catch (const std::exception& e) {
         LOG_ERROR("Stand up failed: " + std::string(e.what()));
         return false;
@@ -83,7 +90,14 @@ bool Controller::StandUp() {
 bool Controller::StandDown() {
     LOG_INFO("Standing down");
     try {
-        return sc_ && sc_->StandDown() == 0;
+        if (!sc_) {
+            LOG_ERROR("SportClient not initialized");
+            return false;
+        }
+        
+        int32_t result = sc_->StandDown();
+        LOG_INFO("StandDown API returned: " + std::to_string(result));
+        return result == 0;
     } catch (const std::exception& e) {
         LOG_ERROR("Stand down failed: " + std::string(e.what()));
         return false;
@@ -93,7 +107,14 @@ bool Controller::StandDown() {
 bool Controller::Sit() {
     LOG_INFO("Sitting");
     try {
-        return sc_ && sc_->Sit() == 0;
+        if (!sc_) {
+            LOG_ERROR("SportClient not initialized");
+            return false;
+        }
+        
+        int32_t result = sc_->Sit();
+        LOG_INFO("Sit API returned: " + std::to_string(result));
+        return result == 0;
     } catch (const std::exception& e) {
         LOG_ERROR("Sit failed: " + std::string(e.what()));
         return false;
@@ -103,7 +124,14 @@ bool Controller::Sit() {
 bool Controller::Damp() {
     LOG_INFO("Damping");
     try {
-        return sc_ && sc_->Damp() == 0;
+        if (!sc_) {
+            LOG_ERROR("SportClient not initialized");
+            return false;
+        }
+        
+        int32_t result = sc_->Damp();
+        LOG_INFO("Damp API returned: " + std::to_string(result));
+        return result == 0;
     } catch (const std::exception& e) {
         LOG_ERROR("Damp failed: " + std::string(e.what()));
         return false;
@@ -114,11 +142,14 @@ bool Controller::RecoveryStand() {
     LOG_INFO("Executing recovery stand");
     
     try {
-        if (sc_) {
-            int32_t result = sc_->RecoveryStand();
-            return result == 0;
+        if (!sc_) {
+            LOG_ERROR("SportClient not initialized");
+            return false;
         }
-        return false;
+        
+        int32_t result = sc_->RecoveryStand();
+        LOG_INFO("RecoveryStand API returned: " + std::to_string(result));
+        return result == 0;
     } catch (const std::exception& e) {
         LOG_ERROR("Recovery stand failed: " + std::string(e.what()));
         return false;
@@ -127,7 +158,14 @@ bool Controller::RecoveryStand() {
 
 bool Controller::StopMove() {
     try {
-        return sc_ && sc_->StopMove() == 0;
+        if (!sc_) {
+            LOG_ERROR("SportClient not initialized");
+            return false;
+        }
+        
+        int32_t result = sc_->StopMove();
+        LOG_INFO("StopMove API returned: " + std::to_string(result));
+        return result == 0;
     } catch (const std::exception& e) {
         LOG_ERROR("Stop move failed: " + std::string(e.what()));
         return false;
@@ -136,7 +174,14 @@ bool Controller::StopMove() {
 
 bool Controller::BalanceStand() {
     try {
-        return sc_ && sc_->BalanceStand() == 0;
+        if (!sc_) {
+            LOG_ERROR("SportClient not initialized");
+            return false;
+        }
+        
+        int32_t result = sc_->BalanceStand();
+        LOG_INFO("BalanceStand API returned: " + std::to_string(result));
+        return result == 0;
     } catch (const std::exception& e) {
         LOG_ERROR("Balance stand failed: " + std::string(e.what()));
         return false;
@@ -145,7 +190,14 @@ bool Controller::BalanceStand() {
 
 bool Controller::Dance1() {
     try {
-        return sc_ && sc_->Dance1() == 0;
+        if (!sc_) {
+            LOG_ERROR("SportClient not initialized");
+            return false;
+        }
+        
+        int32_t result = sc_->Dance1();
+        LOG_INFO("Dance1 API returned: " + std::to_string(result));
+        return result == 0;
     } catch (const std::exception& e) {
         LOG_ERROR("Dance1 failed: " + std::string(e.what()));
         return false;
@@ -154,7 +206,14 @@ bool Controller::Dance1() {
 
 bool Controller::Dance2() {
     try {
-        return sc_ && sc_->Dance2() == 0;
+        if (!sc_) {
+            LOG_ERROR("SportClient not initialized");
+            return false;
+        }
+        
+        int32_t result = sc_->Dance2();
+        LOG_INFO("Dance2 API returned: " + std::to_string(result));
+        return result == 0;
     } catch (const std::exception& e) {
         LOG_ERROR("Dance2 failed: " + std::string(e.what()));
         return false;
@@ -163,7 +222,14 @@ bool Controller::Dance2() {
 
 bool Controller::Hello() {
     try {
-        return sc_ && sc_->Hello() == 0;
+        if (!sc_) {
+            LOG_ERROR("SportClient not initialized");
+            return false;
+        }
+        
+        int32_t result = sc_->Hello();
+        LOG_INFO("Hello API returned: " + std::to_string(result));
+        return result == 0;
     } catch (const std::exception& e) {
         LOG_ERROR("Hello failed: " + std::string(e.what()));
         return false;