You can control the brightness of these LEDs using variable resistors VR1, VR2 and VR3 respectively. Parts Needed. Arduino UNO board – 1 ; 5mm LEDs Red, Green, Blue – each 1 ; 100K Variable resistor – ...

Our project is infact an Arduino with Serially Interfaced MAX7219 Operates an 8X8 LED Matrix to display a heart pattern. The MAX7219 IC is a serial input/output common-cathode display driver that ...

The easiest way to add sound to an "arduino"-level project is to get a little MP3 player board, and just wire the switches to arduino pins however you must (considering the voltage levels of the two).

An Arduino mini pro provides the brains. A FT-232 USB to serial board is used to program the Arduino. A standard Bluetooth module has to have HID firmware installed.

He takes a garden-variety Arduino and a cheap Bluetooth interface board and then controls it from Chrome. You can see the video below. The HM-10 board is cheap and could connect to nearly anything.