OLED02 Display with I2C interface
The OLED02A is a simplified variant of the MLAB OLED01 module. It features a 1.3-inch blue OLED display using the SSD1306BZ controller and communicates over an I²C interface.
Features
- Display: 1.3-inch passive matrix OLED with a resolution of 128x64 pixels.
- Color: Blue.
- Controller: SSD1306BZ.
- Interface: I²C.
- Power Supply:
- Logic: 3.0 V typical (2.8 V min, 3.3 V max).
- Display: Internally generated by integrated DC/DC converter.
- Address Configuration: Default I²C address is
0x3C, changeable to 0x3D via onboard jumper.
- Mounting:
- Horizontal MLAB standard.
- Optional vertical placement using a 3D-printed holder.
Electrical Characteristics
- Operating Voltage (Logic): 2.8 V to 3.3 V
- Operating Current: \~10 mA @ 12 V VCC (internally generated)
- Interface Voltage Levels: TTL-compatible (0 to 3.3 V)
Optical Characteristics
- Contrast Ratio: 2000:1
- Brightness: 60–80 cd/m² (typical with 50% checkboard)
- Viewing Angle: 160° (H and V)
- Response Time: 10 µs (rise and fall)
- Display Technology: Passive matrix
- Pixel Size: 0.148 mm x 0.148 mm
- Dot Pitch: 0.17 mm x 0.17 mm
- Active Area: 21.738 mm x 10.858 mm
Mechanical Parameters
- Board Dimensions: 40.14 mm x 40.14 mm
- Board Thickness: 1.6 mm
- Mounting: Compatible with standard MLAB module placement
I²C Pin Configuration (Standard MLAB I2C Layout)
| Pin |
Name |
Description |
| 1 |
GND |
Ground |
| 2 |
SDA |
Serial Data |
| 3 |
3V3 |
3.3V power supply |
| 4 |
SCL |
Serial Clock |
| 5 |
GND |
Ground |
I²C Address Selection
The OLED02A module uses 0x3C as its default I²C address. By bridging the onboard address jumper, the address switches to 0x3D.
Notes
- OLED02A omits certain advanced features present in OLED01 to simplify integration and reduce cost.
- The module uses only the I²C interface; SPI and parallel interfaces supported by the SSD1306BZ are not routed.
- Ensure proper handling precautions for OLEDs to prevent damage or screen burn-in.
- Refer to the SSD1306 datasheet for command interface details.
