diff --git a/ohmpi/hardware_components/mb_2023_0_X.py b/ohmpi/hardware_components/mb_2023_0_X.py
index 48849b9c35855ab3c0f95a34ddba6560bd969b82..1b67160bccd53068353cee97a10fe886726e9661 100644
--- a/ohmpi/hardware_components/mb_2023_0_X.py
+++ b/ohmpi/hardware_components/mb_2023_0_X.py
@@ -159,7 +159,6 @@ class Tx(TxAbstract):
         assert polarity in [-1, 0, 1]
         self._polarity = polarity
         if polarity == 1:
-            print('pin0')
             self.pin0.value = True
             self.pin1.value = False
             time.sleep(self._activation_delay)
@@ -203,7 +202,6 @@ class Tx(TxAbstract):
         if voltage is not None:
             self.pwr.voltage = voltage
         self.exec_logger.debug(f'Voltage pulse of {polarity*self.pwr.voltage:.3f} V for {length:.3f} s')
-        print('inject_mb', polarity)
         self.inject(polarity=polarity, injection_duration=length)
         self.exec_logger.event(f'{self.board_name}\ttx_voltage_pulse\tend\t{datetime.datetime.utcnow()}')
 
diff --git a/ohmpi/hardware_components/mb_2024_0_2.py b/ohmpi/hardware_components/mb_2024_0_2.py
index 5a5b6b485679344f8e5ea75bcffce2c2859f923d..9bb65d72ac37d8041f043afcc6c3d3b48132d1de 100644
--- a/ohmpi/hardware_components/mb_2024_0_2.py
+++ b/ohmpi/hardware_components/mb_2024_0_2.py
@@ -143,5 +143,4 @@ class Rx(Rx_mb_2023):
         self.exec_logger.event(f'{self.board_name}\trx_voltage\tbegin\t{datetime.datetime.utcnow()}')
         u = (AnalogIn(self._ads_voltage, ads.P0).voltage * self._coef_p2 * 1000. - self._vmn_hardware_offset) / self._dg411_gain - self._bias  # TODO: check how to handle bias and _vmn_hardware_offset
         self.exec_logger.event(f'{self.board_name}\trx_voltage\tend\t{datetime.datetime.utcnow()}')
-        print(f'voltage: {u}')
         return u
diff --git a/ohmpi/hardware_system.py b/ohmpi/hardware_system.py
index 6ca62794046b0b4769dc56914f2f1906616ce8c7..4db9b8adb17cb75e938a07f15103863e9ea69f5d 100644
--- a/ohmpi/hardware_system.py
+++ b/ohmpi/hardware_system.py
@@ -270,6 +270,7 @@ class OhmPiHardware:
 
     def last_dev(self, delay=0.):
         v = np.where((self.readings[:, 0] >= delay) & (self.readings[:, 2] != 0))
+        print(v)
         if len(v) > 1:
             return 100. * np.std(self.readings[v, 2] * (self.readings[v, 4] - self.sp) / self.readings[v, 3]) / self.last_resistance
         else: