Arduino Tutorial - 7 segment LEDs and more

Continuing the tutorial series, we proceed to using more advanced LEDs
from a single LED to 7 Segment and multidigit LEDs. I also tease the next video using ultra low power display like the LED but less than a micro Watt per CM2 of display, and also matrix LED displays.
Code etc will be posted in the next couple of days

[@TheBreadboardca]

the first example that is directly connected to the uno, i use 7 pins to drive the LEDs of each digit (There all in parallel), and I use another 4 pins to sink the current of each individual digit (Up to 7 segments, 8 if you include dp.). by only haveing one digit tied to ground at a time i only light one digit at a time and therefor limit the current, by changing which pin is sinking the digit LEDS (Common the oV )i scan through the digits. now in a production system i would use transistors for the sink (Common) side of the digits allowing much higher current to flow and therefor get a brighter display, in the example i an relying on the self limiting of the internal transistors of the UNO (ATMEGA 328)

[@sargetester99]

This is good but what we want is , POV, persistence of vision, spinning LED displays.
And that is what we wish to learn.

[@sargetester99]

With pov we can have a much bigger array display with fewer leds

[@michellemotta1032]

On the first display of 0 1 2 3 using arduino uno, I didn’t see how you told display to shift to next cluster of LEDS? From code I would guess it would write all numbers in first segment…???

[@abdullahpatel2120]

please do the ardiuno mega2560 tutorial part 3