set_pixel( x, 7 )

[mchobby]

Hi, I'm testing the Matrix8x8 class on Adafruit 871 (matrix 8x8).
This works perfectly on Arduino but I got unexpected issue when running it with MicroPython PyBoard and Matrix8x8.

when I set_pixel on column 7, it also activate the led on column 0 and 5.
So set_pixel( 1, 7 ) does like set_pixel( 1, 7 ) + set_pixel( 0, 7 ) + set_pixel( 5, 7 )
Do you see a reason for this?

[mchobby]

I did assembled a second Adafruit Matrix 8x8 and tested the following code (see picture) to light every of the 64 leds.
As you can see, there is one row and one column that doesn't turn on in this case..