DIY a laser pointer

I have a small battery on the 5th battery,Just once again idle boring Taobao looking for laser head, find a 5mW.

Preferential purchase of electronic cigarettes, is optimistic about this shape and cylindrical lithium battery.

First on the circuit, because it is done after the demolition, so it is reverse, make do see.

Focus on adding a single switch circuit, do not want to use self locking switch, not tall enough, with a single button switch, and temporarily a little bit of defects, that is, the switch is slightly off the point, pocket, occasionally prone to error triggering. If you can put the electronic cigarette air flow control does not have to press the key switch, blowing light, and then blow off.

Because of the small diameter, all the components of a single panel can not be loaded, the double-sided plate drill is too thick, and directly do two plate flying line, the lines are flying lines.

After the completion of the whole, in fact, all the components can be installed to the back of the stainless steel tube, but the front is not easy to break, and do not want to destroy the whole, the future may also demolished the DIY other, directly installed in front of the.

The original structure, you can also unscrew the charge



Originally crimping, and now crimping.

Back, the middle is a single switch circuit, hand plate, circuit diagram and PCB diagram have, and do not shoot details.

The tail button, the contact area is small, the separation of hands, welding pieces of shrapnel to increase the contact area, hot melt filled with peripheral cracks.

All parts：

One-button switch works well. When closing, the current is 0, and the 20mA is blocked. Lights illuminate the rear of the electronic cigarette with a large glass diamond.