ESP8266 Community Forum

- Thu Nov 17, 2016 2:16 am #58238 Hi,

recently I got a daisy chained MAX7219 dot matrix led board. Like this one:

But I can't get it run at all. Not with ESP neither with an arduino same result:


I tried almost any library I could find like
https://github.com/squix78/MAX7219LedMatrix
https://github.com/SensorsIot/MAX7219-4 ... r-ESP8266-
Arduino:
https://github.com/wayoda/LedControl/releases

I am starting to think the module is broken. Did any one of you had the same/similar experience? Any idea what else I could try?

Best regards
-BioBier

- Thu Nov 17, 2016 3:53 am #58241 Try this:
https://www.mikrocontroller.net/topic/405743#4790652

- Thu Nov 17, 2016 8:16 am #58250 That https://github.com/nickgammon/MAX7219_Dot_Matrix doesn't work too. At ESP I've connected
CLK -> 14 GPIO
DIN -> 13
CS -> 5
Tried setting chips to 8 and 4.
Any other hint?

- Fri Nov 18, 2016 7:37 am #58302 Ok I got it working by taking the LED's off and making sure they all point into same direction. There is a nub and a printing on one side.
Hope it will help someone.