Using 1.8 Inch TFT Display with Arduino

This tutorial is for the 1.8″ ST7735 TFT display. This display is a true TFT, the ST7735R driver can display full 18-bit colour.

Wiring

As the display is driven with 3.3V you will need voltage divider or logic level shifter to control it with Arduino.

Using voltage divider

1-8-display-arduino-st7745-connection-voltage-divider-768x532

Using Logic Level Shifter

1-8-display-arduino-st7745-connection-level-shifting-768x619

  • VA connects to Arduino 3.3V power supply
  • VB connects to Arduino 5V power supply
  • GND connected to the two power supply grounds
  • When Bx has TTL 5V input, Ax will get TTL 3.3V output
  • Connect OE to 5V
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