Note: Do not include Raspberry Pi 4B, Arduino and STM32, Please Buy alone.
   Overview
- Operating voltage: 3.3V/5V (IO high-level voltage is as same as the power supply.)
 - Communication interface: 4-wire SPI / I2C
 - Screen type: OLED
 - Control chip: SSD1315
 - Resolution: 128 × 64 Pixels
 - Outline dimensions: 26.0mm × 26.0mm
 - Display size: 21.74mm × 11.18mm
 - Display colors option: Blue/White/Blue and Yellow (1/4 yellow on the top)
 - Operating temperature: -20°C ~ 70°C
 - Storage temperature: -30°C ~ 80°C
 - Viewing angle: > 160°
 

   Features
- Ultra-narrow bezel, conpact size, with onboard voltage translator
 - Adopts 4-wire SPI and I2C interfaces, better compatibility, fast data rate
 - Comes with online development resources (examples for Raspberry Pi/Arduino/STM32)
 
   Specifications
- OPERATING VOLTAGE: 3.3V / 5V
 - DISPLAY PANEL: OLED
 - RESOLUTION: 128 × 64 pixels
 - PIXEL SIZE: 0.15 × 0.15 mm
 - COMMUNICATION INTERFACE: 4-wire SPI / I2C
 - DRIVER: SSD1315
 - DISPLAY SIZE: 21.74 × 11.18 mm
 - MODULE SIZE: 26.00 × 26.00mm
 - DISPLAY COLOR: (C): upper yellow & lower blue; (D): white; (E): blue
 
Version Options

Control Interface

| RES | Reset, low active | 
|---|
| DC | Data/Command selection (high for data, low for command) | 
|---|
| CS | Chip selection, low active | 
|---|
| CLK | Clock input | 
|---|
| DIN | Data input | 
|---|
| GND | Ground | 
|---|
| VCC | Power (3.3V / 5V input) | 
|---|
Hardware Connection
Connecting With Raspberry Pi Via SPI Interface

Connecting With Arduino Board Via SPI Interface

Usage Example

for reference only, the STM32 board is NOT included.
Outline Dimensions

   Video