LED heart-shaped water flashing lamp kit DIY bulk electronic teaching training welding maker production and assembly

Welding Precautions:the resistance is not divided into positive and negative poles, but the resistance value should be distinguished. For capacitance and led, pay attention to distinguish between positive and negative poles (the short pin is negative). The white side of capacitance is negative and the side of LED identification plane is negative.

PleaseNote: the kit comes with a battery box, but without a battery. You need to buy it yourself. Thank you!