Very nice! but it lacks the doc!

Very nice! but it lacks the doc!

Adafruit Matrix 8x8 Bicolore with I2C support (Electronics)
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Customer Review

Sold in 3 elements or even welding.
The connector is easy
The display has two meanings insertions and there is no keying !!!
There is no mounting and programming documentation.

I spent a couple of hours to figure out how to operate the display and in which direction the weld.
The doc's search controller: ht16K33v110.pdf
The doc of the display search: BL-M12A883xx.PDF
for information for the program you must:
send via the I2C address 0x70,
0x21 to activate
0xE0 to 0xEF to the light intensity
0x81 to enable the display
and 2x 8 bytes from address 0x00

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