The ESK-16D35A-M00 is an evaluation board for Holtek constant current LED driver HT16D35A . The board includes 488 white LEDs (in 16x28 matrix) and two HT16D35A ICs. An external MCU can control the LED display and effects of the board with the 3-wire SPI interface.

The Holtek HT16D3x constant current LED driver IC series integrate a PWM illumination control function, fade effect and rolling functions. In having the above features, they are suitable for use in applications such as mood lights, selfie lights, gaming keyboards, rhythm lamps, Bluetooth LED speakers, mobile phones backlights and home appliances which have color display panels.

Holtek provides a graphics editing software tool, LED Editor, to set up and edit patterns and colors, set rolling functions, set up fade and other functions, and then view the simulated display on the computer screen. The development platform, LED Workshop, is also provided to convert any user-edited graphics and instructions into MCU program code, ready for programming into the Holtek MCU. To use the software tools, this board should be used together with the MCU Board ESK-LED-100 and the debug adapter e-Link.