Arduino 7-segment LED

Running a very basic setup of an Arduino board running a 7-Segment display via a 7447 7-segment driver. There are also 2 soft-glow bar LED's that I'm demoing. Only 1 led is lit up on each strip.

Category:

Science & Technology

Tags:

• arduino
• LED

[KE5AUX]

Correct, digital pins differ from analog pins in this way.

Low is NOT no current, just very minimal.

[buggyiscool]

i bought 4 of the 7-seg LEDs but do you need the driver to use them with arduino?

[KE5AUX]

Theoretically you can use them without a driver, but you will need to tie up 8 output pins on the arduino for each of the segments. The drivers allows you to cut down that number to 3(?). To use multiple displays research "multiplexing"

[Huggy13ear]

would you mind sharing the code?

[KE5AUX]

Unfortunately I do not have it anymore. But it involved turning on and off the outputs as needed by the drivers, then pausing, then changing the outputs again.

[Huggy13ear]

so HIGH or LOW on each of the 4 inputs?  1001 would be HIGH LOW LOW HIGH? i haven't been able to find anything that clarifies this

[buggyiscool]

i think ill suffer with 8 outputs but thanks for the explanation/help! 5/5 for that