Disassemble a simple bracelet

kangkls

Disassemble a simple bracelet [Copy link]

 

 

It was given as a gift when I bought a pair of shoes. It was very simple. I thought it had a diode, but when I opened it, it turned out to be a circuit board. The diode was also integrated into the PCB. It was really extreme. However, after opening it, only one code segment lit up, and the others did not light up.

lcofjp

This piece of rubbish is not worthy of being called a bracelet. It is to fool the elderly and children.

dcexpert

This just shows the time.

chunyang

"The diode is integrated into the PCB" - that is simply impossible, take a closer look.

btty038

This is the electronic watch of that time... can't be called a bracelet

btty038

If this thing is to be sold, it does have a bit of a scam flavor.

qwqwqw2088

There should be a battery,

Is it a small lithium battery soft pack or button

littleshrimp

Are the LEDs wafers flying directly on the pads?

chunyang

qwqwqw2088 posted on 2020-9-9 14:52 There should be a battery, is it a small lithium battery soft pack or a button battery

Two disposable button batteries.

chunyang

littleshrimp posted on 2020-9-9 23:27 Is the light-emitting diode a wafer that flies directly on the pad?

It cannot be called a "round wafer", it is a tube core. The tube core base is directly soldered to the PCB, and then connected to another level with a contact wire, which is similar to the packaged finished LED, but there is no outer seal. If you are not careful when disassembling it, you may break the contact wire. In fact, this is how cheap digital tubes are made.

kangkls

Chunyang is a very knowledgeable person. I didn't understand it because it was taken apart by a kid.

I still admire their design.

I said the bracelet was too much, it's just a simple watch, I used the wrong word, please forgive me

UUC

I also received one, but the quality was so poor that I had to tear it apart after playing with it for only a day.

littleshrimp

chunyang published on 2020-9-10 14:05 It cannot be called a "round wafer", it is a tube core. The tube core base is directly soldered to the PCB, and then connected to another level with a touch wire, which is similar to the packaged finished LED, only...

Die Learning

littleshrimp

chunyang published on 2020-9-10 14:05 It cannot be called a "round wafer", it is a tube core. The tube core base is directly soldered to the PCB, and then connected to another level with a touch wire, which is similar to the packaged finished LED, only...

I have disassembled a domestic scanner and the photodiode array inside it also had gold wires flying directly to the pads.

chunyang

littleshrimp posted on 2020-9-10 15:58 I have disassembled a domestic scanner and the photodiode array inside it also has gold wires flying directly to the pads

Since more than a decade ago, aluminum wire has been used in cheap products, and gold wire is only seen in high-frequency, high-speed and high-power situations.

chunyang

kangkls posted on 2020-9-10 15:29 Chunyang is very knowledgeable. The kid took it apart. I didn’t understand it either. I still heard from those who admired the design that the bracelet was passed. It’s just a simple...

It is also good to say "bracelet". The difference between a bracelet and a watch is that the former does not have a dial (including a digital dial). The shape of the dial is obviously different from the strap part and can be viewed at any time, while the bracelet generally does not have a constant display, and the shape is obviously different from the traditional dial.

hujj

It should be that except for the battery, crystal oscillator and digital tube, other components are integrated into the cow dung chip.

ace-pow.com

This is too simple!

vpoppend

If this thing is to be sold, it does have a bit of a scam flavor.