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ssd1306

res: 128x32 iface: i2c u: 3v pins:

  1. VCC => 1
  2. GND => 9
  3. SCK => 3
  4. SDA => 5

MT-12864A

Doc res: 128x64 u: 3v pins:

  1. GND => 9
  2. UCC => 17
  3. U0 -W
  4. A0 => 7
  5. R/W => 11
  6. E => 13
  7. DB0 => 15
  8. DB1 => 19
  9. DB2 => 21
  10. DB3 => 23
  11. DB4 => 27
  12. DB5 => (29 does not work) =>
  13. DB6 => 31
  14. DB7 => 33
  15. E1 => 35
  16. E2 => 37
  17. RES => 40
  18. Uee => rheostat => U0 (contrast settings)
  19. A (light+) ??
  20. K (light-) ??