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Posted: Wed May 15, 2019 7:54 am
by Anonymous
I bought a Seeeduino Ethernet and Seeedstudio NFC v2.1 shield. I followed the instructions on the wiki precisely but the NFC shield is not detected. When I download and run the sample sketches the ouptut is :
Didn't find PN53x board

What can be the issue?
Is the Seeeduino Ethernet compatible with the NFC shield 2.1

Posted: Wed May 15, 2019 3:32 pm
by Seeed Tech Support
Hi there,

Seeeduino Ethernet pin 10 is to control the connection to the Ethernet controller(SPI SS). The NFC shield also use the spi to communicate with arduino. There is a SS pad near the grove port on the nfc shield, please try to cut the D10 and solder to D9, please change the nfc shield ss pin to D9 as well. 


best rgds

Posted: Thu May 16, 2019 4:43 am
by Anonymous
Thank you very much for your swift response and explanation!