I'm just getting started with arduino, trying to test my 7-segment display. But I cant make it works.
As in tutorial - I connected 3th and 8th pin to ground, any other to 5V, but it doesn't light up (see attached pics). May it be burned?
What tutorial? Do you have a spec for the display, or at least a part number?
You're going to need current limit resistors also.
Just a guess, but perhaps it's a common anode one, so it's back to front? But yep as CR said, don't forget the resistors.
CrossRoads:
What tutorial? Do you have a spec for the display, or at least a part number?
This tutorial: Arduino and 7 Segment LED
On my display printed 110561k. I dont think that it differs from common 7-segment display.
You're going to need current limit resistors also.
I've added resistor (1K, 220) between blue wire (display contact) and 5V, still not working.
I would guess that the power rails are split in the center (the red and blue connection)
Move your wires so they are in the same end of the breadboard, and remember the resistor, or you will burn out the LED's in a couple of seconds.
// Per.
Zapro:
I would guess that the power rails are split in the center (the red and blue connection)Move your wires so they are in the same end of the breadboard, and remember the resistor, or you will burn out the LED's in a couple of seconds.
// Per.
You are right, thank you - they are splitted. I changed scheme as attached, but anyway nothing happens.
I think this is a common Anode, not Cathode, display.
LarryD:
I think tis is a common Anode, not Cathode, display.
Now its clear. I should switch ground and 5v, then it works. Thank you for your help.