Help with arduino and Display7S

I make the connection but when i give energy to my protoboard i have to use GND because 5v is not working to give energy to the protoboard . Anybody knows why ? i will send u a photo.|500x375

the white cable is in GND and the brown one is in 5v but it doesnt work if i put it in 5v+ in the protoboard. It just work with GND.

Does my arduino have any problem?

Sorry for my english im from Peru.


U need a resistor for each segment! 220R…470R will do.
I guess your 7.segment is common anode, which means u connect 5V to to Vpp and use a logical 0 to get the segment turned on.