( for the software please browse my Github repository )

Again for the brain, the Arduino Pro Mini is used. This development board is cheap and has enough juice to do what is needed, which is:

• respond to user input via buttons or capacitive touch
• control some WS2812B LED strips
• connect to a wireless board in the future (or upgrade to an integrated dev board)

A piece of stripboard will be used for the basis of a small circuit. The Arduino also attached to this board, and is programmed via an external FTDI board with USB.

The power supply used is 240v -> 5v regulated (with 2A max draw, more thab enough for the amount of LEDs i will be running). Power from the transformer then is fed to two lines on the board.

It is then tapped straight away to feed the Arduino, which passes on power to switches and sensors. This helps keep the ground lines stable.

After the tap a 1000uF capacitor is placed across the main power lines. This helps absorb any surges at startup and thus protect the LED strips.

..speaking of LED strips.. remember this..

• DO NOT PLUG WS2812B LED STRIPS IN THE WRONG WAY..

they will blow as they have no reverse current protection..!!!

anyway, where was I... ah yes..

After the 1000uF capacitor, power is then taken for the LED strips themselves. Two power cables are joined with a data cable in a JST plug, the adjoining part leading to the LED strips.