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Paul Kroon 2017-02-12 08:58:19
I first tried the dotMatrix on the Arduino with the Sprite and Matrix libraries. I got funny results because the column adressing is reversed. Therefore I switched to the MD_MAX72xx libraries. Make sure to change the define in the MD_MAX72xx. h file to read: #define USE_FC16_HW 1 I used the MD_Keyswitch library found at and the MD_MAX72xx library found at Then I pulled the source at With that you should be able to get it to work. If you use pins that are not-SPI standard, make sure to activate the call to MD_MAX72XX with four parameters, and comment out the one with two parameters.
Comments (2)
  • ArtFaks Thanks a lot for this tips !!! Very usefull

    Reply 2017-03-27 03:57:55
  • Alexandre I plan to order one soon, no time wasted thanks to your tips! Good work ;-)

    Reply 2017-04-06 13:32:28
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