Components and supplies
7 Segment LED Display, Red
Jumper wires (generic)
Resistor 330 ohm
Arduino UNO
Apps and platforms
Arduino IDE
Project description
Code
the code:
arduino
the code:
arduino
Downloadable files
circuit:
the resistor is 330 ohm
circuit:
Comments
Only logged in users can leave comments
johng2001
2 years ago
Yes I burned one of my seven segment displays by not using a resistor...not the author of this articles fault but it should be made very clear it's critical to use a resistor when using these LED's
Anonymous user
2 years ago
Remark: The author made a small mistake in his "Fritzing" drawing. . . the 330 Ohm resistor is NOT connected to the black Ground wire. Question: Allthough DP is defined and connected to Output 9 . . . is doesn't light up ! I changed ( and uploaded) line 38 to {'9',1,1,1,1,0,1,1,1},//9 The last "1" should light up DP, but it doesn't. What's wrong with my redenation ?
starter_inventor
2 years ago
you should move the black wire to the correct place
starter_inventor
2 years ago
there are also some other mistakes
Anonymous user
2 years ago
i read a resistor should be connected to each leg of the 7 segment display to avoid some digits being brighter than the others.... however u used only one apllied to the cc. Whats ur take on this
starter_inventor
3 years ago
Thanks for the detailed description! Unfortunately, noobs as we are, we burned almost all diodes during the attempt to figure out whether it's common cathode or anode. Hence my suggestion: In the below sections: "How to know the type of the seven segment?" "How to know the pin ?" do warn that either the ground, or the 5V should be connected to the diode with the 330 resistor in between... Or else it'll burn. :-( Now on to order 10 replacements! :-D
Anonymous user
2 years ago
Yes I burned one of my seven segment displays by not using a resistor...not the author of this articles fault but it should be made very clear it's critical to use a resistor when using these LED's
Anonymous user
3 years ago
it's work perfectly
Anonymous user
3 years ago
Remark: The author made a small mistake in his "Fritzing" drawing. . . the 330 Ohm resistor is NOT connected to the black Ground wire. Question: Allthough DP is defined and connected to Output 9 . . . is doesn't light up ! I changed ( and uploaded) line 38 to {'9',1,1,1,1,0,1,1,1},//9 The last "1" should light up DP, but it doesn't. What's wrong with my redenation ?
starter_inventor
2 years ago
there are also some other mistakes
starter_inventor
2 years ago
you should move the black wire to the correct place
starter_inventor
2 years ago
Thanks for the detailed description! Unfortunately, noobs as we are, we burned almost all diodes during the attempt to figure out whether it's common cathode or anode. Hence my suggestion: In the below sections: "How to know the type of the seven segment?" "How to know the pin ?" do warn that either the ground, or the 5V should be connected to the diode with the 330 resistor in between... Or else it'll burn. :-( Now on to order 10 replacements! :-D