Electronic devices and robots are controlled in different ways. One of them is the knob, which is a kind of mechanical element of the device, which is designed to turn it on and off, as well as to adjust specific parameters. They are commonly used in home theaters and other audio equipment used in home entertainment centers. We can also find them on many control panels, they are used in industry as well as in robotics. The knobs available in our store are dedicated to all DIY enthusiasts, electronics and robotics working on electronic projects. The knobs will help you to create a system to facilitate the management of the finished device. They are available in different variants, in a wide range of colors, patterns, shapes and sizes. We offer encoders and potentiometers with a wide range of applications. There are also knobs with built-in LED backlighting, which affects the visual effect, as well as comfort and convenience of use with limited light.
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BleBox ReflectiveSwitch - reflective LED driver 12-24V / 4A
Index: BOX-08901
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Products: 21
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Potentiometer knob GS18 gray-blue - 6/18mm - 5 pcs.
Knob for rotation potentiometer on axis of 6 mm. The height is 12.5 mm and an external diameter is 18 mm. The product is sold in sets of 5.
Index: MOD-05739
Index: MOD-05739
Encoder 12 impulse 20mm - EC12 vertical - 5pcs.
Knob in the form of an encoder that allows you to create a simple user interface. The module sends the digital signal to one of the two pins, depending on the direction of...
Index: MOD-06905
Index: MOD-06905
Encoder 24 impulse 20mm - EC16 vertical - 5pcs.
Knob in the form of an encoder that allows you to create a simple user interface. The module sends the digital signal to one of the two pins, depending on the direction of...
Index: MOD-06908
Index: MOD-06908
Potentiometer knob gray - 4/12mm - 5 pcs.
Knob for rotation potentiometer on axis of 4 mm. The height is 17.5 mm and the outer diameter is 12 mm. The product is sold in sets of 5.
Index: MOD-07933
Index: MOD-07933
Encoder with button - 20 impulse 12mm - EC11 vertical - 5pcs.
Knob in the form of an encoder with a button that allows you to create a simple user interface. The module sends the digital signal to two pins depending on the direction of...
Index: MOD-06903
Index: MOD-06903
Potentiometer knob GC16 red - 6/16 mm - 5pcs
Knob for rotation potentiometer on axis of 6 mm. The height is 14.6 mm and the outer diameter is 16 mm.
Index: MOD-05736
Index: MOD-05736
Potentiometer knob GS18 gray-red - 6/18mm - 5pcs.
Knob for rotation potentiometer on axis of 6 mm. The height is 12.5 mm and an external diameter is 18 mm.
Index: MOD-05738
Index: MOD-05738
Potentiometer knob GS18 gray-green - 6/18mm - 5pcs.
Knob for rotation potentiometer on axis of 6 mm. The height is 12.5 mm and an external diameter is 18 mm.
Index: MOD-05740
Index: MOD-05740
Potentiometer knob GC20 black - 6/20mm - 5pcs
Set containing 5 knobs for rotation potentiometer on axis of 6 mm. The height is 15 mm and the outer diameter is 20 mm.
Index: MOD-05733
Index: MOD-05733
Potentiometer knob GCL15 silver - 6/15mm - 5 pcs.
Knob for rotation potentiometer on axis of 6 mm. The height is 17 mm and the outer diameter is 14.7 mm.
Index: MOD-05737
Index: MOD-05737
Encoder with button - 24 impulse 12mm - EC12 vertical - 5pcs.
Knob in the form of an encoder with a button that allows you to create a simple user interface. The module sends the digital signal to two pins depending on the direction of...
Index: MOD-06909
Index: MOD-06909
Sensor of the rotation, pulser, rotation encoder - DFRobot EC11
A knob in the form of an encoder together with a button , allows you to create a simple user interface. The module has three signals: A and B are the encoder outputs, while...
Index: DFR-09533
Index: DFR-09533
Potentiometer knob RCL14 red - 6/14mm - 5 pcs.
Knob for rotation potentiometer on axis of 6 mm. The height is 20 mm and the outer diameter is 14 mm. 5 pcs.
Index: MOD-05734
Index: MOD-05734
Potentiometer knob RCL14 green - 6/14mm - 5pcs
Knob for rotation potentiometer on axis of 6 mm. The height is 20 mm and the outer diameter is 14 mm.
Index: MOD-05735
Index: MOD-05735
Mounting potentiometer lying 500kΩ - 5 pcs.
Horizontal mounting potentiometer RM-065 in the through hole case with a resistance of 500 kΩ. Price is for 5 pieces.
Index: PAS-07281
Index: PAS-07281
Rotary potentiometer 10kΩ logarithmic 1/8W - 5pcs.
Logarithmic, rotary potentiometer of 10 kΩ with the power of 1/8 W. Pins' pitch is 5 mm which allows you to attach the device to the breadboard.
Index: PAS-02198
Index: PAS-02198
Potentiometer knob GCL15 black - 6/15mm - 5 pcs.
Knob for rotation potentiometer on axis of 6 mm. The height is 17 mm and an external diameter is 14.5 mm. 5 pcs.
Index: MOD-05732
Index: MOD-05732
Mounting potentiometer 10kΩ - 5pcs
Mounting potentiometer, horizontal RM-065 in through-hole housing with 10 kΩ resistance. Price for 5 pieces.
Index: PAS-00307
Index: PAS-00307
Rotary potentiometer 10kΩ linear 1/8W
10 kΩ linear rotary potentiometer with the power of 1/8 W. Pitch of the pin is 5 mm which allows you to attach the device to the breadboard.
Index: PAS-02168
Index: PAS-02168
Precision potentiometer, multi-turn 20kΩ
Potentiometer POT2218P-20K : wire, precision, multi-turn, 2 W. 20 kΩ, ±5%.
Index: PAS-00846
Index: PAS-00846
Potentiometer Knob - various colours - 2/12,7 - 10 pack
A knob for a rotary potentiometer from Adafruit. The height is 15.8 mm and the outer diameter at the base is 12.7 mm . The product is sold in 10 pieces, each in a...
Index: ADA-21910
Index: ADA-21910
See also
Types of knobs. Conditioners and potentiometers in Botland offer
It is easy to notice that the knobs vary greatly in appearance, which is also due to their functionality and purpose. One type of knobs are encoders, which work well in stationary robots, plotters, audio sets and various types of machines. We distinguish between rotary encoders, which provide feedback signals, the change of position of which takes place in a stepwise manner, which distinguishes them from ordinary potentiometers, where the change occurs continuously. Encoders are equipped with a shaft and a dial, whose movement is rotary and is converted into an electrical signal, the latter in the form of pulses. The change of position occurs when the impulses are counted and processed to achieve the desired result.
Besides encoders, our offer includes potentiometers, which are resistors. In such knobs we set the resistance continuously. They are mostly used to control specific parameters, including volume in audio devices. More and more often we encounter them in intelligent building systems, where they are used to control the intensity and intensity of LED light in rooms and designated areas.
Incremental or absolute encoders
The encoders currently used in electronics are optical encoders. We can divide them into two groups, that is incremental or absolute. When it comes to incremental encoders, they are responsible for providing a signal in the form of high or low pulses. In this way, the direction of rotation is indicated. However, it is not possible to specify a position specification, which means that the movement is only tested from one position. This is slightly different for absolute encoders, which are designed to determine the position change in both directions. The signal in the encoder is created by the light emission of a light beam by the LED. This has the ability to pass through a transparent disc with transparent lines. The light signals are read by a photo sensor, which is placed behind the disk. Acceptance of the impulses is equivalent to the generation of impulses by the photo sensor, which are transported to the counter or driver and counted there. On this basis, an action is performed, which has been previously established and programmed by the user.
You can use the knobs in your electronic projects. With their help you will create a more advanced entertainment center for family and friends, as well as a control system extremely easy and intuitive to use. The knobs available in our offer are bistable and come in square, round and rectangular versions. The knobs also come in various sizes, which you can easily adjust to the specifics of your project, as well as its appearance and aesthetics. The knobs are sold separately, i.e. as a standalone, single product. If you need more of them, it is better to choose a set of several knobs with specific parameters and visually consistent design.