Sparkfun (April) breakout

This might be a stupid question but what is the CD pin for on this breakout?



It’s “card detect”.

See it described here:

On the Sparkfun April, it’s named CD (card detect).
On the Imp April, it’s named Dtct (detect).

Your application might need to know if the imp card is inserted. If it’s inserted but not operating, that would be a different issue than an imp that is not inserted.

Thanks for that :slight_smile: