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SparkFun BOB-13099 Rotary Potentiometer Breakout Board - Rotary Switch Position Sensor

₹409.00 (Inclusive of all taxes)
Out of Stock

The SparkFun BOB-13099 is a breakout board designed to interface a 10-position rotary switch with user-selected resistors, creating a custom, stepped potentiometer for precise rotary position sensing. It provides three connection points (CCW, W, CW) for easy integration into Arduino, Raspberry Pi, and other 3.3V/5V microcontroller projects requiring discrete resistance selection.

Features

  • Converts a 10-position rotary switch into a custom stepped potentiometer.
  • Features nine through-hole positions for user-defined resistor values.
  • Provides 10 discrete rotary selection steps for repeatable position sensing.
  • Offers CCW (Counter-Clockwise), W (Wiper), and CW (Clockwise) output connections.
  • Compact breakout board design for straightforward circuit prototyping and integration.

Out of stock

Description

The SparkFun Rotary Potentiometer Breakout (BOB-13099) facilitates the creation of a custom, multi-position variable resistor. By populating the nine through-hole resistor positions with user-selected values, it transforms a compatible 10-position rotary switch into a precision stepped potentiometer. This allows for the design of specific resistance tapers and discrete voltage divider outputs corresponding to each switch position.

The board outputs a variable resistance signal via its three connection points, enabling direct interfacing with microcontroller analog-to-digital converters (ADCs) for rotary position detection. Its compact form factor and straightforward pinout make it ideal for prototyping custom control interfaces, selector switches, and instrumentation panels where repeatable, discrete settings are required.

Key Features

  • Breakout board for constructing a custom 10-step rotary potentiometer.
  • Nine vertical through-hole resistor positions for flexible resistance value selection.
  • Generates 10 discrete, repeatable selection steps corresponding to switch rotation.
  • Clear CCW, Wiper (W), and CW solder pad connections for easy wiring.
  • Compact PCB design (46 x 25 mm) optimized for breadboard and prototype integration.
  • High-value build for creating tailored resistance characteristics and tapers.
  • Enables precise analog voltage output proportional to rotary switch position.

Applications

  • Custom rotary selector switches for audio equipment and instrument control panels.
  • Precision input devices for microcontroller-based menu navigation and parameter adjustment.
  • Prototyping discrete position sensors for industrial control interfaces and test fixtures.
  • Creating multi-position voltage dividers for analog reference signal generation.
  • Educational projects demonstrating potentiometer principles and rotary encoding.

Technical Specifications

Manufacturer Part NumberBOB-13099
BrandSparkFun
Board TypeRotary Potentiometer Breakout
Compatible Switch10-Position Rotary Switch (Not Included)
Resistor Positions9 (Through-Hole)
Selection Steps10 Discrete Positions
Resistor TypeUser-Selected Through-Hole
Connection PointsCCW, W (Wiper), CW
Output TypeVariable Resistance (User Defined)
Board Dimensions46 x 25 x 2 mm
Board Weight2 g

Frequently Asked Questions

What type of rotary switch is compatible with this breakout board?

The SparkFun BOB-13099 is designed specifically for use with a standard 10-position, single-pole rotary switch (not included). The switch must have one common terminal and 10 individual position terminals to correspond with the board's nine resistor positions and connection points.

How do I select resistor values for the nine positions on the board?

Resistor values are user-defined based on your desired resistance taper and output voltage range. For a linear potentiometer, use identical resistor values. For a logarithmic or custom taper, populate the positions with calculated values. Standard 1/4W through-hole resistors are suitable.

How do I wire the breakout outputs (CCW, W, CW) to my microcontroller?

The W (Wiper) connection provides the variable output. Connect it to your microcontroller's ADC input pin. Connect CCW and CW to your voltage reference (e.g., GND and 3.3V/5V) to create a voltage divider. The output at W will be a stepped voltage corresponding to the switch position.

Package Includes

  • 1 x SparkFun BOB-13099 Rotary Potentiometer Breakout Board

Additional Information

Weight 0.002 kg
Dimensions 4.6 × 2.5 × 0.2 cm