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Hello Fernando,
you can tell me if any of these PCF8575 is compatible with Ferduino?
1 - this PCF8575
PCF8575
or
2 - this PCF8575
PCF8575
If the two which one is easier to use?
as I know I am doing step by step.
What is the ULN2003A?
To have the PCF8575 also have to already have ULN2003A, or can I buy next?
Regard´s
NJPinheiro
Forum ‹ Members section ‹ DIY Ferduino controller ‹ PCF8575
PCF8575 [SOLVED]
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Wed Dec 10, 2014 6:42 pm
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Hi!
This 2 items are compatible but, I can't see a good reason to buy the IC, it is very small to soldering.
For PCF8575 you need of 2 ULN2803, if your relay board activated with LOW signal.
It's very cheap is better buy already to don't lose time.
Check here what's an ULN2003.
Best regards.
This 2 items are compatible but, I can't see a good reason to buy the IC, it is very small to soldering.
For PCF8575 you need of 2 ULN2803, if your relay board activated with LOW signal.
It's very cheap is better buy already to don't lose time.
Check here what's an ULN2003.
Best regards.
Post your doubts on forum because it can help another user too. Just PM me for support if it's absolutely necessary.
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