diff --git a/examples/obsw-std/src/eps/pcdu.rs b/examples/obsw-std/src/eps/pcdu.rs
index 135591b..df30b34 100644
--- a/examples/obsw-std/src/eps/pcdu.rs
+++ b/examples/obsw-std/src/eps/pcdu.rs
@@ -179,14 +179,7 @@ impl SerialInterface for SerialInterfaceDummy {
         let switch_map_mut = &mut self.switch_map.borrow_mut().0;
         match pcdu_req {
             PcduRequest::SwitchDevice { switch, state } => {
-                match switch_map_mut.entry(switch) {
-                    std::collections::hash_map::Entry::Occupied(mut val) => {
-                        *val.get_mut() = state;
-                    }
-                    std::collections::hash_map::Entry::Vacant(vacant) => {
-                        vacant.insert(state);
-                    }
-                };
+                switch_map_mut.insert(switch, state);
             }
             PcduRequest::RequestSwitchInfo => {
                 let mut reply_deque_mut = self.reply_deque.borrow_mut();
diff --git a/examples/obsw-std/src/interface/sim_client_udp.rs b/examples/obsw-std/src/interface/sim_client_udp.rs
index 5b4ddbb..83c90e4 100644
--- a/examples/obsw-std/src/interface/sim_client_udp.rs
+++ b/examples/obsw-std/src/interface/sim_client_udp.rs
@@ -176,7 +176,6 @@ impl SimClientUdp {
 #[cfg(test)]
 pub mod tests {
     use std::{
-        collections::HashMap,
         net::{SocketAddr, UdpSocket},
         sync::{
             Arc,
@@ -191,6 +190,8 @@ pub mod tests {
         eps::{PcduReply, PcduRequest},
     };
 
+    use types::pcdu::SwitchMapBinary;
+
     use super::SimClientUdp;
 
     struct UdpSimTestServer {
@@ -369,7 +370,7 @@ pub mod tests {
         );
 
         // We inject the reply ourselves.
-        let pcdu_reply = PcduReply::SwitchInfo(HashMap::new());
+        let pcdu_reply = PcduReply::SwitchInfo(SwitchMapBinary::default());
         server_sim_reply_tx
             .send(SimReply::from(pcdu_reply.clone()))
             .expect("sending PCDU reply failed");
diff --git a/examples/types/Cargo.toml b/examples/types/Cargo.toml
index 1911db2..23535b6 100644
--- a/examples/types/Cargo.toml
+++ b/examples/types/Cargo.toml
@@ -4,12 +4,13 @@ version = "0.1.0"
 edition = "2024"
 
 [dependencies]
-serde = { version = "1", features = ["derive"] }
-spacepackets = { version = "0.18", default-features = false }
-satrs = { path = "../../satrs", features = ["serde"] }
-num_enum = { version = "0.7" }
-strum = { version = "0.28", features = ["derive"] }
-postcard = { version = "1" }
-thiserror = { version = "2" }
+serde = { version = "1", default-features = false, features = ["derive"] }
+spacepackets = { version = "0.18", default-features = false, features = ["serde"] }
+satrs = { path = "../../satrs", default-features = false, features = ["serde"] }
+num_enum = { version = "0.7", default-features = false }
+strum = { version = "0.28", default-features = false, features = ["derive"] }
+postcard = { version = "1", features = ["alloc"] }
+thiserror = { version = "2", default-features = false }
 bitbybit = "2"
 arbitrary-int = "2"
+hashbrown = { version = "0.17", features = ["serde"] }
diff --git a/examples/types/src/lib.rs b/examples/types/src/lib.rs
index cd32071..f760178 100644
--- a/examples/types/src/lib.rs
+++ b/examples/types/src/lib.rs
@@ -1,3 +1,4 @@
+#![no_std]
 extern crate alloc;
 use core::str::FromStr;
 
diff --git a/examples/types/src/pcdu.rs b/examples/types/src/pcdu.rs
index 623774d..2299403 100644
--- a/examples/types/src/pcdu.rs
+++ b/examples/types/src/pcdu.rs
@@ -1,4 +1,4 @@
-use std::collections::HashMap;
+use hashbrown::HashMap;
 
 use strum::IntoEnumIterator as _;