adafruit_support wrote:You don't say what your configuration is aside from the ST7565. But it is unlikely that rapid pressing of keys would have damaged anything. Re-check all your connections try again.
All the output pins (to the display) should be 3.3v. Post a photo showing all your connections.Now on some 4050 pins i have 4,5volts, and if i suppose right it should be 3.00 volt right?
Maybe i plugghed the 5v to the system instead of the 3.3 volt
Solved.... all the problems were the defective pitches
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