diff --git a/apps/blecsc/ChangeLog b/apps/blecsc/ChangeLog
index 4efacaabf..847ef9834 100644
--- a/apps/blecsc/ChangeLog
+++ b/apps/blecsc/ChangeLog
@@ -1,3 +1,4 @@
 0.01: Initial version
 0.02: Minor code improvements
-0.03: Moved from cycling app, fixed connection issues and cadence
\ No newline at end of file
+0.03: Moved from cycling app, fixed connection issues and cadence
+0.04: Added support for <1 wheel/crank event/second (using idle counters) (ref #3434)
\ No newline at end of file
diff --git a/apps/blecsc/blecsc.js b/apps/blecsc/blecsc.js
index 0b2024fc1..9811bf21b 100644
--- a/apps/blecsc/blecsc.js
+++ b/apps/blecsc/blecsc.js
@@ -47,6 +47,8 @@ class BLECSC {
     this.kph = undefined;
     this.wrps = 0; // wheel revs per second
     this.crps = 0; // crank revs per second
+    this.widle = 0; // wheel idle counter
+    this.cidle = 0; // crank idle counter
     //this.batteryLevel = undefined;
   }
 
@@ -117,7 +119,12 @@ class BLECSC {
           if (this.lastLwet === undefined) this.lastLwet = this.lwet;
           if (this.lwet < this.lastLwet) this.lastLwet -= 65536;
           let secs = (this.lwet - this.lastLwet) / 1024;
-          this.wrps = (this.cwr - this.lastCwr) / (secs?secs:1);
+          if (secs)
+            this.wrps = (this.cwr - this.lastCwr) / secs;
+          else {
+            if (this.widle<5) this.widle++;
+            else this.wrps = 0;
+          }
           this.kph = this.wrps * this.settings.circum / 3600;
           Object.assign(data, { // Notify the 'wheelEvent' handler
             cwr: this.cwr, // cumulative wheel revolutions
@@ -138,7 +145,12 @@ class BLECSC {
           if (this.lastLcet === undefined) this.lastLcet = this.lcet;
           if (this.lcet < this.lastLcet) this.lastLcet -= 65536;
           let secs = (this.lcet - this.lastLcet) / 1024;
-          this.crps = (this.ccr - this.lastCcr) / (secs?secs:1);
+          if (secs)
+            this.crps = (this.ccr - this.lastCcr) / secs;
+          else {
+            if (this.cidle<5) this.cidle++;
+            else this.crps = 0;
+          }
           Object.assign(data, { // Notify the 'crankEvent' handler
             ccr: this.ccr, // cumulative crank revolutions
             lcet: this.lcet, // last crank event time
diff --git a/apps/blecsc/metadata.json b/apps/blecsc/metadata.json
index de8c76fec..a1cac0f4d 100644
--- a/apps/blecsc/metadata.json
+++ b/apps/blecsc/metadata.json
@@ -2,7 +2,7 @@
   "id": "blecsc",
   "name": "BLE Cycling Speed Sensor Library",
   "shortName": "BLE CSC",
-  "version": "0.03",
+  "version": "0.04",
   "description": "Module to get live values from a BLE Cycle Speed (CSC) sensor. Includes recorder and clockinfo plugins",
   "icon": "icons8-cycling-48.png",
   "tags": "outdoors,exercise,ble,bluetooth,clkinfo",