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KN-10OR Plastic Knob for Potentiometer with Orange Indicator
US$0.83
This small plastic knob is designed for potentiometers that have a diameter of 5.5mm, any of our common linear potentiometer will fit on this unit. It also has a orange indicator to show the position of the potentiometer. This unit is 1.6 cm long by 1.5cm wide on the base with the top being 0.9cm wide.
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KN-10Y Plastic Knob for Potentiometer with Yellow Indicator
US$0.83
This small plastic knob is designed for potentiometers that have a diameter of 5.5mm, any of our common linear potentiometer will fit on this unit. It also has a yellow indicator to show the position of the potentiometer. This unit is 1.6 cm long by 1.5cm wide on the base with the top being 0.9cm wide.
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MOT-E-01 Plastic Incremental Encoder for DC motors
US$1.81
This is a plastic encoder designed to fit on our magician chassis motors or any of the products shown below in related products! This is basically a plastic circle that has 20 slits for light to pass through, the encoder works like any other incremental encoder. The incremental encoder consists of a photocell arrangement as a coded disk with evenly spaced dark and transparent segments on its surface. The disk rotates or moves past the light source generating a stream of square wave pulses that determine the angular position of the shaft.
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MOT-H-01 L Bracket for NEMA 17 Stepper Motor
US$4.89
This L bracket was specifically designed for use in 3D printers and CNC machines. The bracket supports the NEMA17 motor. (Product: MOT-SM-17) All addition mounting hardware is included.
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MP-PG-165 GT2 pulley (16 teeth) for 6mm belts, 5mm Bore Diameter
US$2.79
This pulley connects the motor to the belt and allows for rotational motor movement to translate into linear directional movement. This type of mechanism is most often seen in 3D printers or CNC machines.
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BLT-GT2-426 GT2, 2mm pitch, 6mm wide, 426mm long, close-ended Belt
US$6.99
Excellent for linear movement of x and y axis components. The grooves are 2mm and work effectively on 2mm pitch GT2 tooth pulleys. This belt is close-ended, meaning it circular almost like a band belt.
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MOT-SM-17 NEMA 17 Compatible Stepper Motor for 3D Printers and CNC XYZ
US$18.15
A NEMA 17 stepper motor is a stepper motor with a 1.7 x 1.7 inch (42.3 x 42.3 mm) faceplate. The NEMA 17 is larger and generally heavier than for example a NEMA 14, but this also means it has more room to put a higher torque.
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TEST-110 3 Channel Servo/ESC Tester 4.8V – 6VDC
US$5.59

This module is designed to test servo motors and electronic speed controllers (ESC). On the bottom of the Output signal the select push button allows users to toggle in three modes. Mode 1) Potentiometer Control to evaluate the reaction time of the output motor manually. Mode 2) Neutral mode to deactivate the tester and allow the speed controller directly control the motor. Mode 3) Automatic to allow the signal to be digitally controlled by the tester. You can connect up to three servos on the output side and be controlled by one input signal.

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PBS-160 Momentary Pushbutton DPST Switch
US$0.99
These  DPST momentary pushbuttons are perfect as a tactile Reset or Start switch. Type: Momentary DPST  
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DRI0043 TB6600 Stepper Motor Driver
US$30.00
TB6600 is an easy-to-use professional stepper motor driver, which could control a two-phase stepping motor. It is compatible with Arduino and other microcontrollers that can output a 5V digital pulse signal. TB6600 stepper motor driver has a wide range power input, 9~42VDC power supply. And it is able to output 4A peak current, which is enough for the most of stepper motors. The stepper driver supports speed and direction control. You can set its micro step and output current with 6 DIP switch. There are 7 kinds of micro steps (1, 2 / A, 2 / B, 4, 8, 16, 32) and 8 kinds of current control (0.5A, 1A, 1.5A, 2A, 2.5A, 2.8A, 3.0A, 3.5A) in all. And all signal terminals adopt high-speed optocoupler isolation, enhancing its anti-high-frequency interference ability. As a professional device, it is able to drive 57, 42-type two-phase, four-phase, hybrid stepper motor.
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DFR0398 Romeo BLE Quad - A STM32 Control Board with Quad DC Motor Driver & Bluetooth 4.0
US$69.83
Romeo BLE Quad is an arduino compatible robot controller based on STM32 ARM chip. It inherits all features from the Bluno M3, including wireless programming support, wireless communication between iOS/Android apps and remote control. Beyond this it also includes a 4-way DC motor driver and encoder interfaces. You can implement a robot with PID closed-loop feedback control directly with our TT Geared Motor. As well as this the Romeo BLE Quad offers powerful performance thanks to the STM32 ARM 32-bit microcontroller with more storage space and more interface resources. DFRobot has developed bespoke firmware to make it compatible with Arduino IDE and accessible to beginners to robotics.
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DFR0423 Gravity:Digital Self-Locking Switch
US$4.19
This module is a self-locking switch. Press the button to turn it to the "on" state and press it again to turn it to the "off" state. The board has immersion gold plating and is compatible with the "gravity" 3-pin interface making it easy to connect to an Arduino I/O Expansion Shield (DFR0265).
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SERVO-SR Servo Signal Reverser
US$5.59
This device is designed to reverse the incoming signal to the servo. If you have two servos connected with a y cable and both servos move clockwise in order to get the other one to movement the opposite this cable will be connected from the y cable to the servo to reverse the direction! Great for the Y cable scenarios or for RC vehicles. Recommend to use a heat shrink tube to insulate and protect the IC, added benefit makes this job look like a clean one.
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SG-5010 TowerPro SG-5010 Standard Servo
US$13.93
This standard servo is used in cars, boats, or any situation a standard servo can be used for! This servo features dual ball bearings for a smooth operation. Comes with four horns (adapters).
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SEC-105 50W 0.5A Insulated Reed Switch (2/pack)
US$2.73
This tiny reed switch is design to carry a maximum switching current of 0.5A at a maximum switching voltage of 100VDC. Commonly used as a proximity switch or non-contact switch with magnetic doors or any object that has a magnetic field.
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165 - 179