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tayda-a-6331-rotary-encoder-11mm-20det-switch

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Important Note

This entire repo was AI created - including all of the data within. The intent was to A) help me with my personal electronics inventory; and B) see how I could use AI to make that process a bit easier. DO NOT TRUST!

Tayda A-6331 - Rotary Encoder 11mm 20 Detents D-Shaft with Switch

Details

  • Location: Cabinet-3, Bin 32, Section E
  • Category: Encoders & Input Devices — Rotary Encoders
  • Brand: Tayda Electronics
  • Part Number: A-6331
  • Package: Through-hole, vertical terminals
  • Quantity: 10
  • Status: Available
  • Price Range: $1.59
  • Datasheet: EC11 Datasheet
  • Product URL: Tayda A-6331

Description

EC11-compatible 11mm rotary encoder with 20 detents per revolution, 6mm D-shaft, and an integrated push-to-click switch. Vertical terminal orientation for PCB mounting. This is a mechanical incremental encoder — it outputs quadrature signals (A/B channels) as the shaft turns, with no fixed start/end position.

Ideal for Eurorack menu navigation, Arduino/microcontroller UI controls, and any application needing endless rotation with click feedback. The integrated switch adds a “select/enter” function without a separate component. Pairs with the D-shaft encoder knobs in Cabinet 7 Bin 15.

Specifications

Electrical Characteristics

  • Encoder Voltage: 5VDC
  • Encoder Current: 10mA max
  • Switch Rating: 16VDC, 3A max (SPST momentary)
  • Output Type: Quadrature (2-channel, A/B)
  • Resolution: 20 detents per 360° revolution

Physical Characteristics

  • Body Size: 11mm
  • Shaft Type: D-Shaft (flatted)
  • Shaft Diameter: 6mm
  • Shaft Length: 15mm
  • Mounting: Through-hole, PCB mount
  • Terminal Orientation: Vertical
  • Rotation: Continuous (360°, no stop)

Key Features

  • 20 mechanical detents for tactile step feedback
  • Integrated SPST push switch (click-to-select)
  • Continuous rotation — no end stops
  • Standard EC11 footprint
  • D-shaft accepts matching D-shaft knobs

Image

No photo yet — please take a photo of the actual component and add it to binkey-data/attachments/ as tayda-a-6331-rotary-encoder-11mm-20det-switch.jpg, then replace this line with ![Tayda A-6331 Encoder](../attachments/tayda-a-6331-rotary-encoder-11mm-20det-switch.jpg)

Pinout Diagram

Pin Descriptions (5-pin Through-Hole, Vertical)

PinNameFunction
1AEncoder channel A (quadrature output)
2GNDEncoder ground (common)
3BEncoder channel B (quadrature output)
4SWSwitch terminal 1
5SWSwitch terminal 2 (momentary, SPST)

Pins 4 & 5 are the push switch — connect one to GND, the other to a GPIO with pull-up.

Applications

  • Eurorack module menu navigation and parameter selection
  • Arduino/microcontroller UI rotary controls
  • Volume and parameter encoders in audio gear
  • Menu navigation in embedded systems
  • Motorized fader / endless scroll controls

Circuit Examples

Basic Arduino Connection

Encoder A (Pin 1) ── GPIO (with pull-up, e.g. D2)
Encoder GND (Pin 2) ── GND
Encoder B (Pin 3) ── GPIO (with pull-up, e.g. D3)
Switch (Pin 4) ── GND
Switch (Pin 5) ── GPIO (with pull-up, e.g. D4)

Use INPUT_PULLUP on all three GPIOs.

Technical Notes

  • Add 100nF caps from A and B pins to GND for hardware debouncing
  • Pull-up resistors (10K) needed on A, B, and SW pins — use internal pull-ups or external
  • Direction determined by which channel leads the other; swap A/B wires to reverse direction
  • Switch is fully independent of encoder — connect SW pins like any momentary button

Tags

encoder rotary-encoder ec11 20-detents d-shaft switch quadrature eurorack arduino cabinet-3 bin-32 status-available

Notes

EC11-compatible footprint — standard across many brands. The “vertical” variant has terminals pointing straight down for PCB mounting; the horizontal variant has bent terminals for panel/wiring use. D-shaft encoder knobs (Tayda A-6887 black, A-7022 green) are in Cabinet 7 Bin 15.

Graph View

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