Teknikio heart shaped sewable LEDboards are the prefect part to add a little love to your wearable and paper circuits. These cute red boards have a pink smd LED in the middle that illuminated when you connect the + and - tabs to 3 volts of power.

Use the Teknikio batteryboard or another 3V power source. A higher voltage power source can be connected with a resistor. Forward current 30 mA, pulse forward current 150 mA.