Control hundreds of LEDs using an Arduino?

Hello.

There is such task: there is a room, the room on the walls there are 100 LEDs. need with computer via COM-port selectively to light from 1 to 10 LEDs. Still have Arduino UNO, skills programming, and elementary knowledge of electronics. How can I solve this problem? (the problem is that using a dozen insights Arduino to control 100 LEDs)

Thank you for your attention.
October 8th 19 at 02:32
3 answers
October 8th 19 at 02:34
Solution
shift registers, no?
For example, 74HC595 - ramon_Block commented on October 8th 19 at 02:37
Thank you. and can you recommend a specific FETs through which I connect minus of the LEDs with a shift register? - hunter_Kunze73 commented on October 8th 19 at 02:40
The answer is familiar embedder: "Cho for the LEDs? 20mA for nothing. And so the IRLML2803 is possible to ampere holds. This N-channel. P-channel — IRLML5203" - ramon_Block commented on October 8th 19 at 02:43
October 8th 19 at 02:36
Thank you so much!
how to assemble I need the diagram, I will unsubscribe that turned out.
If possible, a little detail (not "here I used the shift register") :) - ramon_Block commented on October 8th 19 at 02:39
Here's an example of the first mixed polarity, and the remake was lazy, so a lot of messy technical details about the solution of the problem. - hunter_Kunze73 commented on October 8th 19 at 02:42
October 8th 19 at 02:38
You can use the drivers series MBI50XX, the shift register+current source — even the resistors are not needed. Lightpack is used in this chip (MBI5026 16 channels) for less money dollar thing.
PS To adjust the brightness, as I recall, used BAM (bit angle modulation). - ramon_Block commented on October 8th 19 at 02:41

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