Smart video doorbell PCB module developed based on ESP32-s3 chip

What is a Video Doorbell?

A video doorbell is an intelligent access control device that integrates video surveillance, voice interaction, and remote communication. It is typically installed at the entrance of homes or commercial premises, serving as a replacement for traditional doorbells while enhancing entryway security management. By combining “visual + audio + remote connectivity,” it overcomes the limitations of traditional doorbells—such as “hearing but not seeing” visitors and being unable to respond when away from home—making it one of the core devices in a modern smart home security system.

Our smart video doorbell is developed based on the advanced ESP32-S3 chip, merging outstanding technology with practical features. It is designed to provide your household with comprehensive security protection and a convenient user experience.

Core Chip Advantages (ESP32-S3)

Powerful Processing Capability:
The ESP32-S3 is equipped with an Xtensa® 32-bit LX7 dual-core processor with a clock speed of up to 240MHz. It can efficiently handle various data processes involved in doorbell operation, such as video stream decoding and voice signal processing. This ensures smooth and stable performance, even under heavy workloads, without system lag.

Rich Interfaces and Expansion Options:
With 45 programmable GPIO pins, the ESP32-S3 supports common peripheral interfaces such as SPI, I2S, I2c, Pwm, RMT, ADC, Uart, SD/MMC host controller, and TWAI™ controller. Entre eles, 14 GPIO pins can be configured as capacitive touch inputs for HMI interactions, enabling personalized user operations. Adicionalmente, it supports high-capacity, high-speed Octal SPI flash and external RAM, allowing easy storage expansion to meet the large video storage demands of doorbells.

AI Acceleration Features:
The chip introduces vector instructions that accelerate neural network computations and signal processing tasks. By leveraging the ESP-DSP and ESP-NN libraries, it enables high-performance image recognition, voice wake-up, and speech recognition applications. This means the doorbell can intelligently identify visitors and accurately capture their voices—even in noisy environments—to notify you in real time.

Low Power Consumption with High Efficiency:
Equipped with an ultra-low-power (ULP) coprocessor, the ESP32-S3 supports multiple low-power modes, making it suitable for energy-efficient applications. It balances high performance with optimized power consumption, extending battery life and minimizing the inconvenience of frequent recharging.