diff --git a/fw/Core/Src/main.c b/fw/Core/Src/main.c
index 562515f..aab91ee 100644
--- a/fw/Core/Src/main.c
+++ b/fw/Core/Src/main.c
@@ -145,11 +145,11 @@ int main(void)
     /* USER CODE END WHILE */
     // Read voltages before and after current limiting resistor (R22, 10 ohm)
     uint16_t val_ch0 = ADC_ReadChannel(ADC_CHANNEL_0);
-    uint16_t val_ch1 = ADC_ReadChannel(ADC_CHANNEL_1);
+    //uint16_t val_ch1 = ADC_ReadChannel(ADC_CHANNEL_1);
     // Convert to voltage (12-bit, 3.3V reference)
     const float adc_voltage_divider = 2.0f;
     float voltage_ch0 = (val_ch0 * 3.3f) / 4095.0f * adc_voltage_divider;
-    float voltage_ch1 = (val_ch1 * 3.3f) / 4095.0f * adc_voltage_divider;
+    //float voltage_ch1 = (val_ch1 * 3.3f) / 4095.0f * adc_voltage_divider;
 
     // simple regulation
     const float target_voltage = 3.0f;