diff --git a/src/lib.rs b/src/lib.rs
index 0f8679a..ec42a07 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -9,13 +9,13 @@ use serde::{Deserialize, Serialize};
 endpoints! {
     list = ENDPOINT_LIST;
     omit_std = true;
-    | EndpointTy                | RequestTy     | ResponseTy            | Path              |
-    | ----------                | ---------     | ----------            | ----              |
-    | PingEndpoint              | u32           | u32                   | "ping"            |
-    | GetUniqueIdEndpoint       | ()            | [u8; 12]              | "get_id"          |
-    | SetGreenLedEndpoint       | f32           | ()                    | "led/green"      |
-    | StartAccelerationEndpoint | StartAccel    | ()                    | "accel/start"     |
-    | StopAccelerationEndpoint  | ()            | bool                  | "accel/stop"      |
+    | EndpointTy                | RequestTy      | ResponseTy            | Path              |
+    | ----------                | ---------      | ----------            | ----              |
+    | PingEndpoint              | u32            | u32                   | "ping"            |
+    | GetUniqueIdEndpoint       | ()             | [u8; 12]              | "get_id"          |
+    | SetGreenLedEndpoint       | f32            | ()                    | "led/green"      |
+    | StartImpedanceEndpoint    | StartImpedance | ()                    | "imp/start"     |
+    | StopImpedanceEndpoint     | ()             | bool                  | "imp/stop"      |
 }
 
 topics! {
@@ -30,26 +30,16 @@ topics! {
     direction = TopicDirection::ToClient;
     | TopicTy                   | MessageTy     | Path              | Cfg                           |
     | -------                   | ---------     | ----              | ---                           |
-    | AccelTopic                | Acceleration  | "accel/data"      |                               |
+    | ImpedanceTopic            | Impedance     | "imp/data"        |                               |
 }
 
 #[derive(Serialize, Deserialize, Schema, Debug, PartialEq)]
-pub struct Acceleration {
-    pub x: i16,
-    pub y: i16,
-    pub z: i16,
+pub struct Impedance {
+    pub magnitude: f32,
+    pub phase: f32,
 }
 
 #[derive(Serialize, Deserialize, Schema, Debug, PartialEq)]
-pub enum AccelRange {
-    G2,
-    G4,
-    G8,
-    G16,
-}
-
-#[derive(Serialize, Deserialize, Schema, Debug, PartialEq)]
-pub struct StartAccel {
+pub struct StartImpedance {
     pub interval_ms: u32,
-    pub range: AccelRange,
 }