Do you mean you want the value of the knob to decrease over time? You should be able to do that by changing its Value property, either in a for loop or using a timer object.
f = uifigure;
h = uiknob('Value', 100);
for k = 100:-1:0
h.Value = k;
pause(0.1);
end
load handel
sound(y,Fs)
Fill in your own beeping sound to indicate that the cooking time is done. [I would have made it take 100 seconds with a longer pause but like sometimes when I'm cooking something in the microwave I got impatient waiting :)]
