diff --git a/src/channels.rs b/src/channels.rs
index 8526732..09b081f 100644
--- a/src/channels.rs
+++ b/src/channels.rs
@@ -18,7 +18,6 @@ pub struct Channels {
     pub adc: ad7172::Adc<pins::AdcSpi, pins::AdcNss>,
     /// stm32f4 integrated adc
     pins_adc: pins::PinsAdc,
-    tec_u_meas_adc: pins::TecUMeasAdc,
     pub pwm: pins::PwmPins,
 }
 
@@ -27,7 +26,6 @@ impl Channels {
         let channel0 = Channel::new(pins.channel0);
         let channel1 = Channel::new(pins.channel1);
         let pins_adc = pins.pins_adc;
-        let tec_u_meas_adc = pins.tec_u_meas_adc;
         let pwm = pins.pwm;
 
         let mut adc = ad7172::Adc::new(pins.adc_spi, pins.adc_nss).unwrap();
@@ -50,7 +48,7 @@ impl Channels {
         adc.setup_channel(1, ad7172::Input::Ain2, ad7172::Input::Ain3).unwrap();
         adc.start_continuous_conversion().unwrap();
 
-        Channels { channel0, channel1, adc, pins_adc, tec_u_meas_adc, pwm }
+        Channels { channel0, channel1, adc, pins_adc, pwm }
     }
 
     pub fn channel_state<I: Into<usize>>(&mut self, channel: I) -> &mut ChannelState {
@@ -190,19 +188,19 @@ impl Channels {
     pub fn read_tec_u_meas(&mut self, channel: usize) -> Volts {
         match channel {
             0 => {
-                let sample = self.tec_u_meas_adc.convert(
+                let sample = self.pins_adc.convert(
                     &self.channel0.tec_u_meas_pin,
                     stm32f4xx_hal::adc::config::SampleTime::Cycles_480
                 );
-                let mv = self.tec_u_meas_adc.sample_to_millivolts(sample);
+                let mv = self.pins_adc.sample_to_millivolts(sample);
                 Volts(mv as f64 / 1000.0)
             }
             1 => {
-                let sample = self.tec_u_meas_adc.convert(
+                let sample = self.pins_adc.convert(
                     &self.channel1.tec_u_meas_pin,
                     stm32f4xx_hal::adc::config::SampleTime::Cycles_480
                 );
-                let mv = self.tec_u_meas_adc.sample_to_millivolts(sample);
+                let mv = self.pins_adc.sample_to_millivolts(sample);
                 Volts(mv as f64 / 1000.0)
             }
             _ => unreachable!(),
diff --git a/src/pins.rs b/src/pins.rs
index 1ec0304..0269d92 100644
--- a/src/pins.rs
+++ b/src/pins.rs
@@ -16,7 +16,7 @@ use stm32f4xx_hal::{
     rcc::Clocks,
     pwm::{self, PwmChannels},
     spi::{Spi, NoMiso},
-    stm32::{ADC1, ADC2, ADC3, GPIOA, GPIOB, GPIOC, GPIOE, GPIOF, GPIOG, SPI2, SPI4, SPI5, TIM1, TIM3},
+    stm32::{ADC1, GPIOA, GPIOB, GPIOC, GPIOE, GPIOF, GPIOG, SPI2, SPI4, SPI5, TIM1, TIM3},
     time::U32Ext,
 };
 use crate::channel::{Channel0, Channel1};
@@ -59,8 +59,6 @@ type Dac0Spi = Spi<SPI4, (PE2<Alternate<AF5>>, NoMiso, PE6<Alternate<AF5>>)>;
 type Dac1Spi = Spi<SPI5, (PF7<Alternate<AF5>>, NoMiso, PF9<Alternate<AF5>>)>;
 pub type PinsAdc = Adc<ADC1>;
 
-pub type TecUMeasAdc = Adc<ADC3>;
-
 pub struct ChannelPinSet<C: ChannelPins> {
     pub dac_spi: C::DacSpi,
     pub dac_sync: C::DacSync,
@@ -74,7 +72,6 @@ pub struct ChannelPinSet<C: ChannelPins> {
 pub struct Pins {
     pub adc_spi: AdcSpi,
     pub adc_nss: AdcNss,
-    pub tec_u_meas_adc: TecUMeasAdc,
     pub pins_adc: PinsAdc,
     pub pwm: PwmPins,
     pub channel0: ChannelPinSet<Channel0>,
@@ -88,7 +85,7 @@ impl Pins {
         tim1: TIM1, tim3: TIM3,
         gpioa: GPIOA, gpiob: GPIOB, gpioc: GPIOC, gpioe: GPIOE, gpiof: GPIOF, gpiog: GPIOG,
         spi2: SPI2, spi4: SPI4, spi5: SPI5,
-        adc1: ADC1, adc2: ADC2, adc3: ADC3,
+        adc1: ADC1,
     ) -> Self {
         let gpioa = gpioa.split();
         let gpiob = gpiob.split();
@@ -106,7 +103,6 @@ impl Pins {
         let adc_nss = gpiob.pb12.into_push_pull_output();
 
         let pins_adc = Adc::adc1(adc1, true, Default::default());
-        let tec_u_meas_adc = Adc::adc3(adc3, true, Default::default());
 
         let pwm = PwmPins::setup(
             clocks, tim1, tim3,
@@ -157,7 +153,7 @@ impl Pins {
 
         Pins {
             adc_spi, adc_nss,
-            pins_adc, tec_u_meas_adc,
+            pins_adc,
             pwm,
             channel0,
             channel1,