Adafruit
Anodized Aluminum Machined Knob - Black - 20mm Diameter
This Anodised Aluminium Machined Knob in classic black is a premium upgrade for any rotary encoder or potentiometer. Solid machined aluminium with knurled si...
This Anodised Aluminium Machined Knob in classic black is a premium upgrade for any rotary encoder or potentiometer. Solid machined aluminium with knurled sides for a secure grip and a shiny anodised finish that looks right at home in a recording studio.
A white triangle indicator on the top lets you see the current position at a glance. The set screw design (2mm hex wrench, not included) fits any 6mm shaft — T18, round, or D-shaft — so it works with virtually any standard rotary encoder or potentiometer.
Key Features
- Solid Machined Aluminium – Premium build with anodised black finish
- Knurled Sides – Textured grip for precise control
- White Position Indicator – Triangle marking for easy orientation
- Universal 6mm Shaft Fit – Compatible with T18, round, and D-shaft encoders/potentiometers
- Set Screw Mounting – Secure attachment using a 2mm hex wrench (not included)
- 20mm Diameter – Compact size suitable for most projects
Ideal For
- Upgrading rotary encoders and potentiometers
- Audio equipment and synth builds
- Control panels and custom interfaces
- Any project using 6mm shaft controls
Specifications
- Diameter: 20mm
- Material: Machined aluminium with anodised coating
- Colour: Black
- Shaft Compatibility: 6mm (T18, round, D-shaft)
- Mounting: Set screw (2mm hex wrench required, not included)
Jargon buster
Plain-language definitions for the technical terms used above.
- encoder
- A device attached to a motor or shaft that reports movement, such as rotation steps or position. In a pump system, an encoder can help measure or control how much the motor has turned, which affects how repeatable the watering amount can be.
- potentiometer
- A variable resistor usually turned with a knob or shaft to create an adjustable electrical signal. It is often used for inputs such as volume, brightness or position, so it helps beginners learn how a microcontroller reads changing values.
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