The ESP32-S has a highly competitive package sized and ultra-low powered chip. It can be used in a wide variety of systems, for home automation, industrial wireless control, baby monitors, wearable electronics products, wireless position sensing devices, wireless positioning system signals and other networking applications.

• The smallest 802.11b/g/n Wi-Fi BT SoC Module 
• Low power 32-bit CPU, can also serve the application processor
• Up to 160MHz clock speed，Summary computing power up to 600 DMIPS
• Overview built-in 520KB SRAM
• Supports UART/SPI/I2C/PWM/ADC/DAC
• SMD-38 package for easy welding
• Support for OpenOCD debugging interface
• Deep sleep current as low as 6.5μA
• Embedded Lwip and FreeRTOS
• Supports STA/AP/STA+AP operation mode
• Support Smart Config/AirKiss technology
• General AT commands can be used quickly
• Support for serial port local and remote firmware upgrades (FOTA)

Technical Details:

• Bluetooth: 4.2 BR/EDR and BLE Standards
• Wi-Fi: 802.11 b/g/n
• Interface: UART, SPI, SDIO, I2C, PWM, I2S, IR, ADC, DAC
• On-chip Sensors: Hall sensor, Temperature sensor, Capacitive touch sensor
• I/O Ports: 22
• Frequency Range: Supports 300 - 4608000bps, Default: 115200bps
• Power Dissipation: 300mA @ 3.3V
• Power Supply Range: 3.0 - 3.6V

• ESP32-S Spec
• ESP-32S Factory Firmware
• ESP-32S AT Firmware
• ESP Flash Download Tools
• Ai-thinker Serial Tool
• Ai-thinker Serial Driver for Windows
• Ai-thinker USB-T1 Serial Driver（Windows/Mac_OS/Linux）
• ESP32-S_hardware_resources
• ESP32 Original SDK
• Arduino Core for ESP32 WiFi Chip
• ESP32 Pin List
• ESP32 Technical Reference Manual
• ESP32 AT Instruction Set and Examples
• Espressif ESP32 Get Started
• Espressif ESP-IDF (IoT Development Framework) Versions
• Espressif ESP-IDF Programming Guide
• Espressif ESP32 API Guides
• Espressif ESP32 API Reference
• Espressif ESP32 Hardware Reference
• Espressif ESP32 Resources
• Espressif Downloads Webpage
• Espressif Documents Webpage
• esp32.com forum