diff --git a/src/channels.rs b/src/channels.rs
index 40c8af7..7f03ed5 100644
--- a/src/channels.rs
+++ b/src/channels.rs
@@ -31,7 +31,7 @@ pub enum PinsAdcReadTarget {
 }
 
 pub const CHANNELS: usize = 2;
-pub const R_SENSE: f64 = 0.05;
+const R_SENSE: f64 = 0.05;
 
 // From design specs
 pub const MAX_TEC_I: ElectricCurrent = ElectricCurrent {
@@ -58,7 +58,7 @@ pub struct Channels {
     pub adc: ad7172::Adc<pins::AdcSpi, pins::AdcNss>,
     /// stm32f4 integrated adc
     pins_adc: pins::PinsAdc,
-    pub pwm: pins::PwmPins,
+    pwm: pins::PwmPins,
 }
 
 impl Channels {