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It has to load resistors in this circuit? I'm with the board sold in sparkfun.com. If so, where are soldered the resistors R1, R2, R3 or A0, A1, A2?
To activate the relay is also required ULN2803?
thanks
Forum ‹ Members section ‹ DIY Ferduino controller ‹ PCF8575
PCF8575 [SOLVED]
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Fri Jul 24, 2015 9:21 am
Fri Jul 24, 2015 9:21 am
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Post Number:#3
Sat Jul 25, 2015 6:22 am
Sat Jul 25, 2015 6:22 am
Posts: 48
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I'll call in which pins? 20 and 21 are already reserved for the DS1307.
Post Number:#4
Sun Jul 26, 2015 3:00 pm
Sun Jul 26, 2015 3:00 pm
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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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