Do you want 10 LEDs but only have 3 wires? The Sun Shift LED Bar can help! This beautifully silkscreened Circuit Board lets you control an LED bar with only 3 wires from your Arduino or other microcontroller. Select from red or green in drop down menu below. Checkout the example Arduino code on the tutorial page. The board uses a 74HC595 shift register to control the LEDs. You can easily daisy chain
many sun shifters together without taking any more wires from your Arduino. Because the 74HC595 shift register only has 8 outputs two pairs of LEDs are wired together, while 6 can be controlled individually.