. The TLC5940 is channel PWM unit with 12 bit duty control (0-4095), current limit control (0-63), and a daisy chainable serial interface. . On the left-hand side of the board all serial inputs are broken out to 0.1" headers and likewise with output on the right-hand side. . All 16 PWM channels are broken out to standard 0.1" headers, which run alongside convenient voltage and ground rails. . Also, because the TLC5940 can be daisy-chained, the breakout is designed to support that feature. . This breakout board is a to take of this useful IC.