Controllino Mini: RTC e SD Card SPI

[flami44]

Hello.

Excuse my little tecnical competence and english.

I can’t get the SD Card to work on “Controllino Mini” except by deactivating RTC and only using PIN 10 for access SD, with the standard SD library.

Different pins didn’t work because many are used for different services.

In Controllino Mini I use the relays d0, d1, d2 and d3, sequentially controlled by random input on A0.

Which free digital output Arduino Pin, different from 10, can be used to log on SD time and event signal via SPI?

What suggestions or changes may be necessary for this purpose? Controllino Mini does not allow this?

Thank you in advance.

[Lukas]

Hello,

SPI at CONTROLLINO MINI can be used for the RTC OR for the custom peripheral connected to the pinheader, not for both. So your solution and usage of the pin 10 as a slave select signal is correct.

But in principle you can use all pinheader pins as digital outputs, even the analog and the interrupt ones.

Best regards,

Lukas