[NEW] Add LCD timeout

[forntoh]

The library should include an optional timeout.

void setTimeout(uint8_t timeout);

• When the time elapses, the LCD is cleared and the backlight is switched off.
• The LCD's state will be restored when a key is pressed (or if action invokes paint()).
• When the timeout is set to zero, the LCD stays on as long as it is powered.
• If no timeout is provided, a default of 5s is used.

Benefit

• Save energy 🤷‍♂️🚮⚡

[strikar21]

define before setup:

unsigned long currentMillis;
unsigned long startMillis;
unsigned long period = 10*1000; //( FOR 10 second Delay)

inside the void loop function:

  currentMillis = millis();
  if (currentMillis - startMillis >= period) {
    menu.lcd->setBacklight(LOW);
    menu.hide();
  }
  if (button != '0') {
    menu.lcd->setBacklight(HIGH);
    menu.show();
    startMillis = millis();
  }

[jiriks74]

I have a working implementation in my project. I should have some free time in the coming weeks so I could try to rewrite it into the library. Hopefully you'll see a pr from me soon ;)

[forntoh]

@jiriks74 Any progress with this? 🙂