How to assemble DIY Round Triangle LED Handheld POV Rotation SMD Learning Kit

First of all, we need to pay attention to the problem before soldering

1. Soldering temperature must below 300 ℃, electric iron temperature can not be too high, otherwise it may damage the LED.

2. Please use good solder wire solder.

3. It is recommended to carefully read the entire production process and then start soldering.

Step1: Soldering LED, notch of the LED corresponding to the oval pad, as shown below:

Firstly add solder on one pad, and then heat the solder to fix the LED pin, and then solder the other pins, all the LED is the same soldering method

Step 2: Soldering IC and 120 ohm resistor, When soldering IC Please note the direction, as shown below:

Step 3: Solder patch buttons and button battery holder, Please note that the direction when solder the button battery holder, the two battery holder are the same approach:

Step 4: Solder roller, first using two acrylic plate pad PCB board, then put in the roller, the opposite side of the roller is on the button batteries side, the front side of the roller is on components side, as following figure:

The front side and the opposite side as follow:

Front side面

Step 5: Solder the roller, use the solder to fix the roller, because the roller is a metal, it is recommended to increase the temperature of the soldering iron soldering, as shown

It is recommended to solder a solder joint every 90 °, as shown below:

Step 6: install the acrylic panel, first install the screw nut on the acrylic panel

Install another acrylic plate to the back, then insert the cover to the roller:

Finally fitted with two button batteries (model CR2032,this kit do not included)

Finished, click the micro switch to turn the power on and off.

Rotate it will show a variety of different patterns: