This is a lower-cost version of my Touch Potentiometer without the AD5262 chip. It is designed for use in digital applications such as LED dimming using the PWM output or as a computer or micro-controller peripheral using the serial or I2C interfaces. It doesn't have the analog pot functionality (although the user could add a AD5262 and supporting bypass caps themselves). This version also has very cool white LEDs.

Example code for arduino, circuit ideas and the "tputil" program used to configure the Touch Potentiometer can all be found on my website accessed through the Documentation link.

Features:

• Full 8-bit (256 count) range
• Dual host interfaces: Logic-level serial and I2C
• 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 bus
• Configurable linear or non-linear PWM transfer function
• Simple register interface with jabber option
• Programmable power-on default operation
• User-accessible EEPROM data storage

Applications:

• Computer peripheral
• Embedded system control
• Dimmer for LED lighting applications
• DAC replacement using a filter on the PWM output