Tilt Sensing LED Board Known as LED Puck

The project is comprised of an accelerometer, controller, MCU, and a few LEDs on the LED Puck board where the tilt of the board is sensed by the accelerometer and the appropriate LED lights up to indicate that the board is tilted.

A prototype of the I/O for the puck has been laid containing the LEDs, their driver, an accelerometer chip, and a pushbutton. There are a few SMT A6276 LED driver chips for making the board SMT. The A6276 will be on the underside of the board in order for the pins to be in the same order as the LEDs it drives. All the SMT components have to be soldered first. All the cathodes of the LEDs are facing clockwise for simplicity of design.

Connecting to the Arduino for power is the ribbon cables as well as with the LED output and tilt input. The LED driver works perfectly while proper reorientation of the accelerometer will make it work by fixing the soldering of the accelerometer to the board 180° from its proper orientation. Due to routing challenges, the jumper wires are particularly running halfway across the board.

Rest of the project