multiplexing with u12
1 reply to this topic
Posted 29 January 2013 - 04:47 AM
Hi All I have a project which involves multiplexing 400 LED's and I wondered if it would be possible to do it with the U12, any advice would be appreciated. Many thanks John
Posted 29 January 2013 - 08:55 AM
If you need individual control of any combination of LEDs, then you would need 400 bits of DO. Our devices typically have ~20 DIO, so you would have to use I/O expander chips to get more. You might be able to attach enough addressable I2C chips to get 400 I/O. If you just need to turn on one LED at a time, then you need 9-bits of I/O to control 512 LEDs with multiplexers, so that is possible with lots of wiring.
0 user(s) are reading this topic
0 members, 0 guests, 0 anonymous users