diff --git a/src/epd1in54/mod.rs b/src/epd1in54/mod.rs
index 5d0c7f1..7b19b7d 100644
--- a/src/epd1in54/mod.rs
+++ b/src/epd1in54/mod.rs
@@ -94,7 +94,7 @@ where
 
 }
 
-impl<SPI, CS, BUSY, DC, RST, Delay, E> WaveshareInterface<SPI, CS, BUSY, DC, RST, E>
+impl<SPI, CS, BUSY, DC, RST, E> WaveshareInterface<SPI, CS, BUSY, DC, RST, E>
     for EPD1in54<SPI, CS, BUSY, DC, RST>
 where
     SPI: Write<u8, Error = E>,
@@ -102,7 +102,6 @@ where
     BUSY: InputPin,
     DC: OutputPin,
     RST: OutputPin,
-    Delay: DelayUs<u16> + DelayMs<u16>,
 {
     fn width(&self) -> u16 {
         WIDTH
diff --git a/src/epd2in9/mod.rs b/src/epd2in9/mod.rs
index db6fa03..7eaeccd 100644
--- a/src/epd2in9/mod.rs
+++ b/src/epd2in9/mod.rs
@@ -189,7 +189,7 @@ where
     }
 }
 
-impl<SPI, CS, BUSY, DC, RST, D, E> EPD2in9<SPI, CS, BUSY, DC, RST>
+impl<SPI, CS, BUSY, DC, RST, E> EPD2in9<SPI, CS, BUSY, DC, RST>
 where
     SPI: Write<u8, Error = E>,
     CS: OutputPin,
diff --git a/src/epd4in2/mod.rs b/src/epd4in2/mod.rs
index 3905f99..f4bac81 100644
--- a/src/epd4in2/mod.rs
+++ b/src/epd4in2/mod.rs
@@ -285,14 +285,13 @@ where
     }
 }
 
-impl<SPI, CS, BUSY, DC, RST, D, ERR> EPD4in2<SPI, CS, BUSY, DC, RST>
+impl<SPI, CS, BUSY, DC, RST, ERR> EPD4in2<SPI, CS, BUSY, DC, RST>
 where
     SPI: Write<u8, Error = ERR>,
     CS: OutputPin,
     BUSY: InputPin,
     DC: OutputPin,
     RST: OutputPin,
-    D: DelayUs<u16> + DelayMs<u16>,
 {
     fn command(&mut self, command: Command) -> Result<(), ERR> {
         self.interface.cmd(command)
diff --git a/src/traits/mod.rs b/src/traits/mod.rs
index c6f58ea..0ec5c8f 100644
--- a/src/traits/mod.rs
+++ b/src/traits/mod.rs
@@ -61,8 +61,8 @@ where
     /// Creates a new driver from a SPI peripheral, CS Pin, Busy InputPin, DC
     ///
     /// This already initialises the device. That means [init()](WaveshareInterface::init()) isn't needed directly afterwards
-    fn new<DELAY: DelayUs<u8>>(
-        spi: SPI, cs: CS, busy: BUSY, dc: DC, rst: RST, delay: DELAY,
+    fn new<DELAY: DelayMs<u8>>(
+        spi: SPI, cs: CS, busy: BUSY, dc: DC, rst: RST, delay: &mut DELAY,
     ) -> Result<Self, ERR>
     where
         Self: Sized;  
@@ -75,7 +75,7 @@ where
     /// and initialising which already contains the reset
     fn sleep(&mut self) -> Result<(), ERR>;
 
-    fn wake_up(&mut self) -> Result<(), ERR>;   
+    fn wake_up<DELAY: DelayMs<u8>>(&mut self, delay: &mut DELAY) -> Result<(), ERR>;   
     
 
     /// Sets the backgroundcolor for various commands like [clear_frame()](WaveshareInterface::clear_frame())