I have an Arduino Uno (a SainSmart model, actually). I intend to power it with three 1.5V batteries. I measured them and they yield 4.67V in total. The Arduino requires 5V.

#The question is, if the arduino will work this way.

I'm not powering complicated microcontroller components here. These components are used:

• A buzzer
• An LED
• A unit of 4 seven segment displays
• A couple of buttons as input elements

If the volume or brightness of these components is slightly decreased, it doesn't matter at all. But I would like to know if it will work in the first place.

#And also...

Where exactly do I plug the power source in? The power jack, the USB jack, pins, somewhere else?

The schematic looks like this, just to illustrate it. I'm not a good drawer, but you'll get the idea...

I have an Arduino Uno (a SainSmart model, actually). I intend to power it with three 1.5V batteries. I measured them and they yield 4.67V in total. The Arduino requires 5V.

The question is, if the arduino will work this way.

I'm not powering complicated microcontroller components here. These components are used:

• A buzzer
• An LED
• A unit of 4 seven segment displays
• A couple of buttons as input elements

If the volume or brightness of these components is slightly decreased, it doesn't matter at all. But I would like to know if it will work in the first place.

And also...

Where exactly do I plug the power source in? The power jack, the USB jack, pins, somewhere else?

The schematic looks like this, just to illustrate it. I'm not a good drawer, but you'll get the idea...