cbm80amiga / Arduino_ST7789_Fast

Fast SPI library for the ST7789 IPS display
GNU Lesser General Public License v3.0
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Can't connect bare display to Arduino uno #19

Open MadCat67 opened 1 year ago

MadCat67 commented 1 year ago

Hey I have the 12 pin ST7789 display but instead of using the 7 pin module display I am trying to connect the bare 12 pin display itself. I used this library to upload the Hello World sketch to my Arduino and it works fine on the 7 pin module version of the display. However when I wire up the 12 pin the screen flashes white before going blank.

Here are my connections: All 4 GND of display: GND on Arduino, LEDK: 3.3V Power, LEDA Arduino GND, VDD: 3.3V, D/C: D7 on Arduino, CS: GND, RES: D8 on Arduino, SDA: SDA on Arduino, SCL: SCL on Arduino.

Since this works with the module version I assume it's a wiring issue. Anyone else here able to use the bare 12 pin screen with Arduino? Appreciate any help I can get, thanks.