EC11 Rotary Encoder Module

The module from DFRobot carries an EC11 rotary encoder that can be turned endlessly in both directions. Pins A and B deliver the two track signals, pin C is the push button that switches when the knob is pressed. The module is suitable for navigating menus and for controlling motors, similar to a handwheel on CNC machines.

Recommended Accessories:

• Dupont Cable M-F 20cm 20 Pieces

Features:

• Rotatable through 360°, no end stop
• Track signals A and B, push button on C
• 20 pulses per revolution
• Knob fitted
• 2 mounting holes

Application Examples:

• Navigating menus
• Setting values such as volume or brightness
• Handwheel for moving motors
• Integration into Home Assistant with ESPHome

Documentation:

• ESPHome documentation: Rotary Encoder Sensor
• Wiki DFRobot
• Schematic (PDF)
• Datasheet EC11 (PDF)
• Arduino library RotaryEncoder (GitHub)
• Dimension drawing (PDF)

Technical Data:

• Operating voltage: 3.3 V to 5 V
• Pins: VCC, GND, A, B, C
• Pulses: 20 per revolution
• Rotation angle: 360°, no end stop
• Service life: 30000 ± 200 cycles
• Contact resistance: ≤ 100 mΩ
• Insulation resistance: ≥ 100 MΩ
• Operating temperature: -30 °C to +80 °C
• Board dimensions: 33.1 × 27.4 mm, hole spacing 25.4 mm
• Weight: 14 g

Scope of Delivery:

• 1× EC11 Rotary Encoder Module with knob
• 1× Pin header 1×5 pin