minify pcb for can

Software/CAN_Sensor/src/main.rs

@@ -241,10 +241,11 @@ async fn worker(
 
         probe_gnd.set_as_output(Speed::Low);
         probe_gnd.set_low();
+        let probe_duration = Duration::from_millis(1000);
         while Instant::now()
             .checked_duration_since(start)
             .unwrap_or(Duration::from_millis(0))
-            < Duration::from_millis(1000)
+            < probe_duration
         {
             // Sample the analog input (Threshold/Trigger on A1)
             let val: u16 = adc.convert(&mut ain, SampleTime::CYCLES28_5);
@@ -283,7 +284,7 @@ async fn worker(
         let mut msg: heapless::String<128> = heapless::String::new();
         let _ = write!(
             &mut msg,
-            "555 window=100ms pulses={} freq={} Hz (A1->Q on PB0)\r\n",
+            "555 window={}ms pulses={} freq={} Hz (A1->Q on PB0)\r\n", probe_duration.as_millis(),
             pulses, freq_hz
         );
         log(msg);