Thread: LED sequencer
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Geoff Hackett
 
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Default LED sequencer

Hello,

A bipolar transistor or FET or relay driver pack or led drivers etc. The
micro side is very easy
to program.

Geoff...

"Chris W" wrote in message
...
"Thierry C. (NOOS)" wrote:

Hi Chris.

In my opinion, no single logic device will be able to handle it, or the
design effort isn't worth it (even using shift registers +

initialization
logic around can lead to unexpected results and be very big).
The two obvious solutions would be :
- either an old EPROM (1 for 8 LED outputs) you program with the LED
sequence and you scan with a counter
- or a microcontroller with the program to output the sequence on its

output
ports.

OK?


The microcontroller sounds like the way to go to me. I haven't done any
electronics in years though. I am a programmer by profession now so I

don't
think I will have a hard time learning to program the microcontroller but

I have
now idea where to look to find one that is reasonably cheap and preferably
rather small. I'm thinking that I will need some external method of

increasing
the current abilities for the version that lights 10 LEDs at once, is

there a
pre packaged unit that would take signal to turn on a high current load?

Kind
of like a solid state version of a relay board with a lot of inputs and

outputs.




--
Chris W

"They that can give up essential liberty
to obtain a little temporary safety
deserve neither liberty nor safety."
-- Benjamin Franklin, 1759 Historical Review of Pennsylvania