The following pages and posts are tagged with

TitleTypeExcerpt
AD4DA-LightUI Page 4x slide potentiometers for use with I2C-AD4DA.
I2C-9685-PWM Page I2C 16 channel PWM Driver based on a PCA9685
I2C-AD4DA Page I2C 4x A/D 1x D/A I/O expander based on a PCF8591T
I2C-LEDStripDriver Page WiFi/I2C LED Strip Driver based on a PCA9685
IO4-LED-Strip-Driver Page PWM Driver board for high current LED strips
SVL-Light-It-Base Page SVL-Light-It-Base

You are free to download these files and make your own boards.