Display for alarm clock

[start78]

I'm planning to build a simple alarm clock (show time, at least 2 alarms, play mp3 sound).
My first hardware problem is the display. I'd like to use a 3,5" lcd graphics display. Doesn't have to be a touchscreen.
But: most of them connect to the gpio. I need to add some buttons for the settings. Is there a small, affordable display that connects to the RasPi display port?
And: it should be possible to set the display to be realy dark but still readable during the night and day. Even most commercial alarm clocks are way to bright for a bedroom.

[stderr]

Even most commercial alarm clocks are way to bright for a bedroom.

If you used LEDs, you could dim them for the conditions as you see fit. The LCD would likely have a backlight and those can be trouble making them light enough to see without being too light.

[DougieLawson]

Most things which use an LED for the display, or LEDs as backlights can be driven with PWM, that's an effective way to dim LEDs. You simply vary the duty cycle. GPIO 18 does hardware PWM.

[start78]

So much for the brightness. Thanks!

But now i need actual recommendations:
Does anyone know of a cheap display that leaves the possibility to add some buttons to the gpio port? I need at least a snooze-button (maybe an arcade switch?) and two or three settings buttons.

I wanted to keep the costs under 70 Euros. Used RaSPi B+ (because of the bigger gpio port) + AC_Adapter + wifi (7€) + case + Speakers (10€)... Doesn't leave much for the display...

[tinylcd]

hello

below are few options see if they can meet your budget . the spare gpio are avaibable on the 26/40 pin header pcb

3.5 inch with 26 pin gpio header pcb
http://www.neosecsolutions.com//product ... 8&cPath=17

3.5 inch with 40 pin gpio header pcb
http://www.neosecsolutions.com//product ... 2&cPath=20

2.8 inch with 40 pin gpio header pcb
http://www.neosecsolutions.com//product ... 8&cPath=20

regards
tinylcd