Timeline for Is there a way to have more than 14 Output pins on arduino?
Current License: CC BY-SA 3.0
6 events
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| Sep 4, 2015 at 20:40 | comment | added | linhartr22 | @DanielGrillo I should have been more specific and explained how column and row multiplexing, which is typically used on LED cubes, can be done without shift register and without the limitations of Charlieplexing. A 4x4 row column matrix can individually control 16 leds with 8 I/O lines. A 4x4x4 cube can individually control 64 leds with 12 I/O lines (possible even on an Uno by using Analog A0-A5 as digital lines). | |
| Sep 3, 2015 at 21:05 | comment | added | Daniel Grillo | @linhartr22 I've NEVER said that is the only way. Charlieplexing is just a common solution for this problem. And my answer was the 7th one. So other possibilities had already showed before. | |
| Sep 3, 2015 at 19:15 | comment | added | linhartr22 | Charlieplexing is not the ONLY way to multiplex LEDs without using shift registers. | |
| Feb 5, 2015 at 18:13 | comment | added | Daniel Grillo | @kontur yes, you're right. But in terms of persistence of vision you can consider that they are. The question doesn't have such details. | |
| Feb 5, 2015 at 16:49 | comment | added | kontur | One thing to note is that this technique allows you to control more leds, but not simultaneously necessarily. | |
| Feb 26, 2014 at 12:14 | history | answered | Daniel Grillo | CC BY-SA 3.0 |