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

Using Logic Level Shifter

• 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