libs/RFID.MFRC522
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Update README.rst

Browse Source 
SPI is sensitive to electromagnetic noise
This commit is contained in:
Rotzbua
2017-01-26 16:05:11 +01:00
committed by GitHub
parent 8d014ca908
commit fe0e15ec29
1 changed files with 2 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
README.rst
View File

@@ -196,6 +196,8 @@ Troubleshooting
#. Check your connection, see `Pin Layout`_ . #. Check your connection, see `Pin Layout`_ .
#. Check voltage. Most breakouts work with 3.3V. #. Check voltage. Most breakouts work with 3.3V.
#. SPI only works with 3.3V, most breakouts seem 5V tollerant, but try a level shifter. #. SPI only works with 3.3V, most breakouts seem 5V tollerant, but try a level shifter.
#. SPI do not like long connections. Try shorter connections.
#. SPI do not like prototyping boards. Maybe try a soldered connections.
#. According to reports #101, #126 and #131, there may be a problem with the soldering on the MFRC522 breakout. You could fix this on your own. #. According to reports #101, #126 and #131, there may be a problem with the soldering on the MFRC522 breakout. You could fix this on your own.