diff --git a/src/temp_sensor.c b/src/temp_sensor.c
index 6c65ad7..df3c0f4 100644
--- a/src/temp_sensor.c
+++ b/src/temp_sensor.c
@@ -7,7 +7,7 @@
 #include <libopencm3/stm32/adc.h>
 #include <libopencm3/stm32/dma.h>
 
-#define ADC_NUM_CHANNELS 2
+#define ADC_NUM_CHANNELS 1
 static volatile int16_t adc_values[ADC_NUM_CHANNELS];
 
 static fxp_t m_temperature_internal = 0;
@@ -49,7 +49,7 @@ static fxp_t calc_temperature_ntc(uint16_t adc_val)
 	// note: all resistor values in kΩ! The factor 1000 is removed from the numbers!
 	static const fxp_t ln_r_ntc_nom = 252323; // ln(47 kΩ) converted to fxp_t with 16 fractional bits
 	static const fxp_t r1 = FXP_FROM_INT(10);
-	static const fxp_t b_constant = FXP_FROM_INT(4125);
+	static const fxp_t b_constant = FXP_FROM_INT(4450);
 	static const fxp_t ntc_temp_nom_inv = 220; // 1/(273.15+25) * 2**16
 	static const fxp_t celsius2kelvin = 17901158; // (273.15) * 2**16
 
@@ -76,7 +76,7 @@ void temp_sensor_init(void)
 {
 	uint8_t channels[ADC_NUM_CHANNELS] = {
 		0,                    // The NTC is connected to ADC_IN0
-		ADC_CHANNEL_TEMP      // Temperature sensor
+		//ADC_CHANNEL_TEMP      // Temperature sensor
 	};
 
 	// Prepare the ADC
@@ -101,7 +101,7 @@ void temp_sensor_init(void)
 	// configure DMA for ADC
 
 	//nvic_enable_irq(NVIC_DMA1_CHANNEL1_IRQ);
-	//dma_channel_reset(DMA1, DMA_CHANNEL1);
+	dma_channel_reset(DMA1, DMA_CHANNEL1);
 	dma_set_priority(DMA1, DMA_CHANNEL1, DMA_CCR_PL_LOW);
 	dma_set_memory_size(DMA1, DMA_CHANNEL1, DMA_CCR_MSIZE_16BIT);
 	dma_set_peripheral_size(DMA1, DMA_CHANNEL1, DMA_CCR_PSIZE_16BIT);
@@ -136,7 +136,7 @@ bool temp_sensor_has_new_values(void)
 
 		// calculate temperature values and cache them.
 		m_temperature_ntc = calc_temperature_ntc(adc_values[0]);
-		m_temperature_internal = calc_temperature(adc_values[1]);
+		//m_temperature_internal = calc_temperature(adc_values[1]);
 		return true;
 	} else {
 		return false;