OLED Navigation Module EC11 Encoder 1.3″ 128×64

The 1.3-inch OLED Navigation Module combines a crisp 128×64 pixel OLED display with an EC11 rotary encoder and two dedicated push buttons onto a single compact PCB — delivering a complete, ready-to-use front panel UI solution for menu navigation, parameter adjustment, and interactive control in embedded projects without any external wiring between separate components.

The 1.3-inch SH1106-driven OLED delivers sharp, high-contrast monochrome white-on-black visuals with no backlight required, ensuring crisp readability even in bright environments at minimal power consumption. The display communicates via I²C at a default address of 0x3C, requiring only two wires (SDA and SCL) from your microcontroller — keeping GPIO usage to an absolute minimum. An onboard solder jumper allows the I²C address to be switched to 0x3D when running two modules on the same bus.

The EC11 rotary encoder provides 20 pulses per rotation with 20 detents for satisfying, precise step-by-step navigation through menus and settings — with a built-in push-button function on the PSH pin for confirm/select actions. A dedicated CON (KEY1) confirm button and BAK (KEY0) back/return button round out the navigation set, giving your project a full four-input UI panel in one module. Onboard 4.7kΩ pull-up resistors on the I²C lines remove the need for external pull-ups. Fully compatible with Arduino, ESP32, Raspberry Pi, and STM32, and supported by the U8g2, Adafruit SSD1306, and U8x8 display libraries.

Specification:

• Display Size : 1.3 inch
• Display Driver IC : SH1106
• Display Type : Passive Matrix OLED
• Resolution : 128 × 64 pixels
• Display Colour : White on Black (monochrome)
• Contrast Ratio : 2000:1 (typical)
• Communication Interface : I²C (IIC)
• I²C Address : 0x3C (default) / 0x3D (solder jumper)
• I²C Pull-up Resistors : 4.7kΩ onboard
• Operating Voltage : 3.3V DC
• Operating Current : ~23mA (all pixels active)
• Rotary Encoder : EC11
• Encoder Pulses per Rotation : 20 pulses / 20 detents
• Encoder Pins : TRA (Phase A), TRB (Phase B), PSH (push button)
• Navigation Buttons : CON/KEY1 (confirm), BAK/KEY0 (back/return)
• Total Control Inputs : 3 (encoder rotate + encoder push + 2 buttons)
• Operating Temperature : -40°C to +85°C
• Compatible Boards : Arduino, ESP32, Raspberry Pi, STM32
• Compatible Libraries : U8g2, Adafruit SSD1306, U8x8
• Package Includes : 1 × 1.3″ OLED EC11 Rotary Encoder Navigation Module