Regarding localization, we seem to always pay attention to the mobile phone, ignore smart wear, and smart home class. Last time we said 100% domestic 360 children's watch, today we discovered pure domestic millet rabbit children's watches 4c.
Milito Child Watch 4C is still the scheme of Chunya 8521e, the screen is 1.3 inch TFT screen. 2 megapixel front camera. Built-in 830 mAh battery. And support IPX8 waterproof.
Take a look at its main IC of its motherboard.
The main IC of the motherboard (below):
1: Spreadtrum- - Power amplifier
2: Spreadtrum- - Power Management
3: Foresee- Memory + Flash
4: Spreadtrum- SL8521ET - Dual Nucleus Central Processor Chip
The main IC on the back of the motherboard (below):
1: Spreadtrum - - RF transceiver
2: Spreadtrum - - RF front end module
3: Focaltech- - Touch chip
4: Memsensing - Microphone
The specific chip model, as well as the complete BOM, which can be swolded with EWISTECH search, search "rice rabbit".
What did you find in the dismantling?
Before dismantling, you need to remove the strap and SIM calorie, and there is a silica gel ring on the calorie, which can play waterproof.
The watch is removed from the side of the screen, and the front box is fixed by the snap and adhesive. After heating with the hot air gun, the slit can be opened.
The antenna plate and the screen are removed. The motherboard is fixed on the screen, and there is a metal cover protection at the battery connection motherboard BTB interface and fixed by screws.
First take the metal cover, separated the battery and motherboard. The motherboard is fixed to the antenna plate by screws and snaps, and white glue is applied around the microphone position on the motherboard.
Disconnect the BTB interface on the motherboard to remove the screw, remove the motherboard. The front camera is fixed by the conductive tape from the back, and the corresponding microphone position has a pressure balance film. The screen cable and the touch cable are connected separately.
There are also large-area conductive bubbles and conductive cloth on the back of the screen. On the side of the motherboard, there is a shield, and the shield is attached to the shield.
The motherboard shield of rice rabbit 4c is used as a double shield, and three thermally conductive silicone is attached to the shield, corresponding to the chip position.
The keyboard is fixed to the antenna plate using double-sided adhesive, and can be easily taken with the tweezers. The antenna plate and the screen are fixed by waterproof glue, but the fixation is more secure, and it is necessary to use the hot air gun to be opened.
The battery is fixed in the rear case, and there is a charging soft plate connected to the motherboard, and the soft plate is fixed. The battery cover is fixed by the buckle in the back cover and takes place with a crowbar. There are two magnets on the back, used for magnetic conjugate, and the charging connection soft plate is fixed directly to the double-sided adhesive.
The battery is fixed by a backbubochite. There is a small hole inside the rear cover with a white sheet of paper, which is speculated as a pressure relief hole. The side surface has a waterproof label, and there is a plastic shell outside the vibrator.
All vibrators and speakers are fixed by foam, and the vibrator adds a protective cover and is fixed by a snap.
Xiaomi rice bunny phone watch 4c supports IPX8 waterproof, so waterproof design. The whole machine is rigorous, but the dismantling is simple. The antenna uses the LDS antenna, directly fixed on the screen, and there is a waterproof label in the back shell. There are three thermally conductive silicone on the motherboard to heat dissipation. Using a violet exhibition sharp program, all chips are domestic.
Of course, the following children's watches are also analyzed and studied in the following children's watches.
Huawei Child Watch 4X
Small Genculcast Children's Watch Z6
Sometimes the hot wear equipment
Apple - Watch SE
Apple - AirPods Pro
Reprinted from ewistech.
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