Hello All,
I have an Uno R3 and am attempting to connect a micro SD card reader to the six pin ICSP header, rather than use the other board I/O connectors one usually sees being used, due to all of them already being used. It is now connected but fails to read.
I'm wondering why people don't normally use the ICSP header for an SD card reader since the signals are right there. Any help is greatly appreciated!
The ICSP header just brings together the pins needed for programming on one 6 pin header. They are the same connections as presented on the normal interface pins, so if you are already using all the pins you are using the ones connected to the ICSP header already for something else.
Thanks.
Your topic has been moved to a more suitable location on the forum.
Maybe on of the reasons why people use 11/12/13 on an Uno is that they are easier to identify. They are actually the preferred pins because on a Mega the SPI signals are not on 11/12/13 and on a Leonardo they are only available on the 6-pin header.
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