Hi,
is it possible to control a 7 segment display by placing it on top of an Arduino Pro Mini?
The display size perfectly fits the Arduino and covers pins 5 to 13
Hi,
If the size fits yes but it doesn't mean the connections will correspond to each other.
What do you want to attain?
Do you have data on the 7 segment display?
You will have to include current limit resistors for each segment.
Thanks.. Tom.. 
I'm using this display, it shouldn't need resistors.
Hi,
What makes you think it will not need resistors, it is a single 7 segment display?
It does not have current limiting resistors inckuded.
Can you tell us your electronics, programming, arduino, hardware experience?
Tom...
SeaWalker:
I'm using this display, it shouldn't need resistors.
That is a singularly foolish thing to say! 
Better go back to school. 
Datasheet
TomGeorge:
You will have to include current limit resistors for each segment.
Although if you use the sevseg.h library you only need them on the digit selectors. (In fact the library defaults to expecting that.)
#define RESISTORS_ON_SEGMENTS 0
Resistors are generally used only on the common cathode but it should be possible to avoid that too since the pro mini runs at 3.3V
The breadboard picture above does not have any visible resistor.
12Stepper:
Although if you use the sevseg.h library you only need them on the digit selectors. (In fact the library defaults to expecting that.)#define RESISTORS_ON_SEGMENTS 0
Which means it then switches to multiplexing by segment instead of by digit.
Clever!
SeaWalker:
The breadboard picture above does not have any visible resistor.
Because it is powered either by a variable supply cautiously increased to just the right voltage and only long enough to take the photo, or with a single resistor simply to illustrate the device. (Or possibly a coin cell.)
Not related to actually using the display.
I have used the barebones displays, it's fun to play with and understand mutliplexing. Beyond that, it's just a royal PITA.
For any actual use in a project I'll always opt for one with multiplexing chip on board. The TM1637 based modules are super easy to work with and require only two pins to control.
wvmarle:
The TM1637 based modules are super easy to work with and require only two pins to control.
Albeit the code to perform their protocol is more complex and unlike the MAX7219 drivers which allow you to chain many on only three pins, you require either one or two more pins for every additional TM1637 display.
Also the problem with the manufacturing fault with some TM1637 modules!