[TriEmbed] Driving 32 5v relays

[Robert Gasiorowski]

If you already have relay boards with transistor driver, then all you need
is weak driver like 595.
If you have relays only, then I would suggest using high current version of
595, 
TPIC6C595 (or higher current B595 & A595)
No need for opto-isolators if you use flyback diodes.

Rob.

On Thu, Jul 16, 2015 at 4:53 PM, Rodney Radford via TriEmbed <
triembed at triembed.org> wrote:

> Keep in mind he has already purchased the relay board that includes the
> opto isolation and transistor drive... so to do anything else involves
> additional money for a new solution.
>
> What he has is definitely good enough... no reason to buy anything
> different
>
> On Thu, Jul 16, 2015 at 4:48 PM, John Vaughters via TriEmbed <
> triembed at triembed.org> wrote:
>
>> >I am with Rodney on the opto-isolation relay board as the best solution.
>>
>> Small change: Opto-isolated triacs or the opto-isolated relay board. Kind
>> of a toss up, I would probably break the tie on cost or convenience of the
>> choices.
>>
>> John Vaughters
>>
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