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The SparkFun Touch Potentiometer, or Touch Pot for short, is an
intelligent linear capacitive touch sensor that implements
potentiometer functionality with 256 positions.

It can operate as a peripheral to a computer or embedded
micro-controller or in a stand-alone capacity. The Touch Potentiometer
provides both a dual-channel analog and PWM output for direct control
of other circuitry. Configurable analog and PWM transfer functions
support a wide variety of applications such as volume control and LED

The Touch Potentiometer is controlled by a Microchip PIC16F1829 8-bit
micro-controller that provides the host interface, LED control,
capacitive sense and peripheral control functions. A built-in
low-dropout voltage regulator allows operation over a range of input
voltages up to 12V and breadboard friendly connectors make it easy to
play with. A desktop application has been created by our collaborator,
Dan Julio, that communicates with the Touch Pot over a serial
connection. From this utility app you can change configuration
settings, alter LED behavior, calibrate the capacitive touch sensor,
view current readings in jabber mode, and much more.


* Dual host interfaces: Logic-level serial and I2CTM
* Dual 8-bit 20 k-ohm 3-terminal digitally controlled variable
resistor outputs
* PWM output
* 8 LED display with multiple display modes and intensity levels
* Option for interpolated (soft) changes between touches
* Configurable touch sensor parameters for a variety of PCB covers
* Easily configurable I2C address to allow multiple devices on one
* Configurable linear or non-linear PWM transfer function
* Configurable linear or simulated logarithmic variable resistor
transfer function
* Variable resistor supports single- or dual-supply operation
* Simple register interface with jabber option
* Programmable power-on default operation
* Built-in calibration procedure
* User-accessible EEPROM data storage
* Built-in 5V LDO voltage regulator
* Through-hole and SMT connectors


* Design Files @GitHub [1]



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General information

Manufacturer SparkFun
Product type Passive electronic components
Item number5998182
Manufacturer no.PRT-13144

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Returns and warranty

Warranty 24 month Bring-in
30-day right of return

30-day right of return

This product may be returned within 30 days after shipment or collection. A minimum of 10% will be deducted from opened products. Unfortunately, we cannot accept a product if it is damaged, incomplete or missing its original packaging.

Returns and warranty

Please use our simplified returns and warranty process to return a product or register a warranty case. Returns and warranty

Please use our simplified warranty process to view the warranty period as well as any warranty extensions you may have purchased. This will ensure that your return or warranty case is processed quickly and effectively.


Mail delivery

 Expected delivery time: approx. 7–9 days
Currently 3 piece(s) in stock at the supplier


All locations

 Expected delivery time: approx. 7–9 days
Currently 3 piece(s) in stock at the supplier

If ordered immediately.
Information subject to change.

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SparkFun Touch Potentiometer SparkFun Touch Potentiometer