[sdiy] Shift register options

[Olivier Gillet]

Chained 595s for output, chained 165s for input; all together on a SPI
peripheral is the LEDs/button I/O solution of choice on all Mutable
Instruments projects.

Olivier

On Thu, Feb 6, 2014 at 5:03 PM, Tom Wiltshire <tom at electricdruid.net> wrote:
> Totally agree with Roman. the '595 is an excellent choice, to the point that it or the '594 are the defacto standard for that job.
>
> I commonly use the 74HC166 to do the same job in reverse - parallel in, serial out. Makes reading any number of buttons/encoders/whatever a simple matter of a few pins.
>
> On 6 Feb 2014, at 15:51, Roman Sowa <modular at go2.pl> wrote:
>
>> FWIW, I use them by hundreds, if not thousands without any problems, just to control LEDs. Work like a charm.
>> I love the idea of having almost all outputs at one side of the IC.
>>
>> You may try some open-drain (TPIC6C595) versions to boost LED current up to 100mA, but beware, they have totally different pinout. OTOH any modern LED gives blinding light at mere 5mA
>>
>> Roman
>>
>> W dniu 2014-02-06 16:28, Justin Owen pisze:
>>> Related to my last uM post...
>>>
>>> We're using a 74HC595 shift register/405x multiplexer combo to cycle
>>> through some button states. I'm comfortable with the 405x series but
>>> I've not used shift registers before...
>>>
>>> ...is there a 'better' option than the generic 74HC595?
>>>
>>> It's working fine, it's available in DIL and SOIC - just thought I'd
>>> ask.
>>>
>>> Thanks all,
>>>
>>> - J
>>>
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