diff --git a/src/bmp280.rs b/src/bmp280.rs
index bd658008b..dfe67c9c4 100644
--- a/src/bmp280.rs
+++ b/src/bmp280.rs
@@ -110,7 +110,9 @@ mod tests {
 
     #[test]
     fn test_bmp280_pi_4() {
-        let mut baro = Bmp280Device::builder().build().unwrap();
+        let mut baro = Bmp280Device::builder().build().unwrap_or_else(|error| {
+            panic!("Failed to build BMP280: {error}");
+        });
         for _ in 0..10 {
             println!("BMP280 temperature: {:?}", baro.read_temperature());
             println!("BMP280 pressure: {:?}", baro.read_pressure());
diff --git a/src/icm20689.rs b/src/icm20689.rs
index 600daf79e..80e6d00d2 100644
--- a/src/icm20689.rs
+++ b/src/icm20689.rs
@@ -123,7 +123,9 @@ mod tests {
 
     #[test]
     fn test_icm20689_pi_4() {
-        let mut imu = Icm20689Device::builder().build().unwrap();
+        let mut imu = Icm20689Device::builder().build().unwrap_or_else(|error| {
+            panic!("Failed to build ICM20689: {error:?}");
+        });
         for _ in 0..10 {
             println!("ICM20689 gyroscope: {:?}", imu.read_angular_velocity());
             println!("ICM20689 accelerometers: {:?}", imu.read_acceleration());
diff --git a/src/leak.rs b/src/leak.rs
index b33d4dae4..53c0c894a 100644
--- a/src/leak.rs
+++ b/src/leak.rs
@@ -82,7 +82,9 @@ mod tests {
 
     #[test]
     fn test_leak_pi_4() {
-        let leak = LeakDetector::builder().build().unwrap();
+        let leak = LeakDetector::builder().build().unwrap_or_else(|error| {
+            panic!("Failed to build leak detector: {error:?}");
+        });
         for _ in 0..10 {
             println!("Leak detector: {}", leak.is_leak_detected().unwrap());
             sleep(Duration::from_millis(1000));
diff --git a/src/pca9685.rs b/src/pca9685.rs
index daf301f2d..78e63680f 100644
--- a/src/pca9685.rs
+++ b/src/pca9685.rs
@@ -191,18 +191,34 @@ mod tests {
     //TODO: Not working
     #[test]
     fn test_pca9685_pi_4() {
-        let mut pwm = Pca9685Device::builder().build().unwrap();
+        let mut pwm = Pca9685Device::builder().build().unwrap_or_else(|error| {
+            panic!("Error building PCA9685: {error:?}");
+        });
+
         println!("PCA9685: Start initial configuration");
-        pwm.enable_output(false).unwrap();
-        pwm.set_frequency(60.0).unwrap();
-        pwm.set_duty_cycle_all(0.5).unwrap();
+
+        pwm.enable_output(false).unwrap_or_else(|error| {
+            panic!("Error in while enabling output: {error:?}");
+        });
+        pwm.set_frequency(60.0).unwrap_or_else(|error| {
+            panic!("Error in setting frequency: {error:?}");
+        });
+        pwm.set_duty_cycle_all(0.5).unwrap_or_else(|error| {
+            panic!("Error in configuring duty cycle: {error:?}");
+        });
+
         println!("PCA9685: Enabling PWM output");
-        pwm.enable_output(true).unwrap();
+        pwm.enable_output(true).unwrap_or_else(|error| {
+            panic!("Error in enabling output: {error:?}");
+        });
         sleep(Duration::from_millis(1000));
         for duty_cycle in [0.0, 1.0, 0.0, 1.0, 0.5] {
             for channel in 0..16 {
                 println!("PCA9685: Channel {channel} value {duty_cycle:.1}");
-                pwm.set_duty_cycle(channel, duty_cycle).unwrap();
+                pwm.set_duty_cycle(channel, duty_cycle)
+                    .unwrap_or_else(|error| {
+                        panic!("Error in setting duty cycle: {error:?}");
+                    });
                 sleep(Duration::from_millis(100));
             }
         }