Teardown Wyze 1080p Smart Doorbell based on Ingenic T31

Many months ago, we got some Wyze smart doorbells, they are engineering samples derived from the Ingenic laboratory in Beijing. Comparing with conventional smart doorbells, Wyze smart doorbell is very small, its size as small as a doorbell button, I reckon that this makes it easy to be suitable for upgrade of the existing door chime system for American/Canadian houses. You may wonder what its internal structure looks like, so here we teardown the device to get to know its electric parts.

The front product has two major parts including the doorbell button and the camera. Unlike similar products, it doesn’t have PIR motion sensor. Wyze logo is in the middle between them, the logo will turn on when motion detection occurs.

The back of product has the power input interfaces, removing the rubber, you can find the microUSB port which also can be used to power on the device. Underneath the microUSB, there are two screws which should connect to the AC16~24V.

Unscrewing screws and removing the back plastic, we can see the internal design. Wyze smart doorbell utilizes the Ingenic T31 SoC hardware solution. Ingenic T31 is a video surveillance dedicated ARM CPU, it adopts dual-core architecture, speed reaches 1.5GHz, has built-in 512M bit DDR2 RAM memory, supporting maximum 2592x2048 resolution (5-Megapixel).

The smart doorbell includes dual board layers, the main board includes lens module, Ingenic T31 SoC and Wi-Fi module. We can find GND, TX, RX marks on the board, this is a series port for debugging.

The Wi-Fi module adopts Realtek RTL8189FTV, it’s a single frequency 2.4G band Wi-Fi solution, complies IEE802.11 b/g/n standard, wireless data rate can reach up to 150Mbps, power supply 3.3V or 1.8V.

CC1310 wireless MCU from Texas Instruments based on ARM Cortex M3 architecutre, designed for RF315MHz, 433MHz, 868MHz, 912MHz 2-way communication. This IC is used for wireless communication between smart doorbell and the indoor wireless chime receiver.

The power board has AC to DC converter, it uses MB26S Rectifier bridge, max. voltage 60V and 2A current, 220uF and 50V capacitor.

The NOR Flash is 25Q127CSIG, capacity 128M bit (16MB), this chip stores the firmware. 16MB is a typical NOR flash size for the security cameras.

The 6208 IC is a LED driver IC to control the IR-Cut filter and Infrared LEDs.

AW8735 is a powerful Class-K audio amplifier with AB/D output mode selection, it features 2.3W output power into 8Ohm load at 4.2V.

The Infrared LED board has attached a microphone. It includes 4 pieces SMD LEDs, IR illumination distance reaches up to 5 meters.