Fixes.

UI.hpp

@@ -6778,7 +6778,10 @@ void display_bar_float(const char* title, float value, float factor, int32_t min
 
   // Value
   display.setCursor(LCD_cols - size, 1);
-  display_float(value * factor, size_number, size_fraction, zeros, false, sign); // TBD
+  //display_float(value * factor, size_number, size_fraction, zeros, false, sign); // does not work with "Smallest code" optimizer
+  char s[LCD_cols + 1];
+  snprintf_P(s, strlen(s), PSTR("%+1.1f"), value * factor); // not so good solution, but works with optimizer
+  display.print(s);
 
   // Bar
   display.setCursor(0, 1);
@@ -6833,7 +6836,10 @@ void display_meter_float(const char* title, float value, float factor, float off
 
   // Value
   display.setCursor(LCD_cols - size, 1);
-  display_float((value + offset) * factor, size_number, size_fraction, zeros, false, sign);
+  //display_float((value + offset) * factor, size_number, size_fraction, zeros, false, sign); // does not work with "Smallest code" optimizer
+  char s[LCD_cols + 1];
+  snprintf_P(s, strlen(s), PSTR("%+1.1f"), (value + offset) * factor); // not so good solution, but works with optimizer
+  display.print(s);
 
   // Bar
   display.setCursor(0, 1);

config.h

@@ -53,6 +53,8 @@
 // sed -i.orig 's/^#define USB_MIDI_SYSEX_MAX 290/#define USB_MIDI_SYSEX_MAX 4104/' /usr/local/arduino-teensy/hardware/teensy/avr/cores/teensy3/usb_midi.h
 // sed -i.orig 's/^#define USB_MIDI_SYSEX_MAX 290/#define USB_MIDI_SYSEX_MAX 4104/' /usr/local/arduino-teensy/hardware/teensy/avr/cores/teensy4/usb_midi.h
 //#define USB_MIDI_SYSEX_MAX 4104
+//
+// Information about memory layout, etc.: https://www.pjrc.com/store/teensy41.html
 
 #define VERSION "1.2.3"