Remove hysteresis (smoothing handles noise); values now step ±1 per update

include/expression_pedal.h

@@ -24,7 +24,6 @@ private:
     uint8_t midi_channel;
     uint8_t midi_cc;
 
-    static const uint8_t HYSTERESIS = 3;
     static const uint16_t READ_INTERVAL_MS = 5;
     uint32_t last_read_time;
 

src/expression_pedal.cpp

@@ -38,12 +38,7 @@ void ExpressionPedal::update(UsbMidiTransport& midi) {
     current_raw = analogRead(adc_pin);
     smoothed_raw = (smoothed_raw * 7 + current_raw + 4) / 8;
     uint8_t new_value = adc_to_midi(smoothed_raw);
-
-    if (new_value > current_value + HYSTERESIS ||
-        new_value + HYSTERESIS < current_value ||
-        (new_value != current_value && (new_value == 0 || new_value == 127))) {
     current_value = new_value;
-    }
 
     if (current_value != last_sent_value) {
         last_sent_value = current_value;