Hi,

I have assembled my 6 7-segment max7219 displays of my MCP 737, but, 2 displays are less brightness.

can you tell me how to do to parameter each display?

on the configurator, if i choose between 0 -31 i have:

0: the display lights up weakly

1-31: the same intensity (max bright) but, 2 screens are weaker

all displays are connected to the BUS 0.

Thanks for responses.

Oliver
ago in Hardware by

2 Answers

0 votes
it's not possible or no idea??

Oliver
ago by
0 votes
Hello, Oliver,

did you change the display position?
Is it only for certain displays?

Frank
ago by
0
Hi Frank,

Yes I have change display position. In all cases the same displays are weaker.

So I think that they are the display witch they are less brightness that the 4 others.

So, I ask to me if it's possible to down brightness of the 4 others in the order to have the same brightness for my 6 displays!

Thank you.

Oliver
0
Hello, Oliver,
so I adjust the brightness of my LEDs with the resistors. You can also test this with the 7Seg displays. For the MAX7219 are 1-3kohm intended. Try using 470ohm resistors for the two darker 7Seg displays. If that's not rich just step by step to take the next higher resistor. This has always worked for me so far. Also pay attention to a clean 5V current.
Frank
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