Description �� ESP32 SMD Wireless Module (ESP-32 / ESP32E / ESP32S) | AuscomTech Surface-mount WiFi and Bluetooth modules designed for direct integration into custom PCBs and embedded systems. These modules use a dual-core 32-bit processor with built-in wireless connectivity, making them ideal for IoT, automation, and smart electronics. Supplied as bare SMD modules with no headers, they are intended for soldering onto PCBs in compact or production-ready designs. ⭐ Key Features SMD Surface-Mount Design – Direct PCB soldering for embedded and production use Dual-Core Performance – Up to 240 MHz processing capability WiFi Bluetooth – 802.11 b/g/n with Bluetooth 4.2 BLE 4MB Flash – Supports firmware storage and OTA updates Integrated PCB Antenna – Compact onboard antenna design Rich Peripheral Support – UART, SPI, I2C, PWM, ADC, DAC, SDIO Low Power Operation – Suitable for IoT and battery-powered devices �� Technical Specifications Processor: Xtensa dual-core 32-bit LX6 Clock Speed: 80 MHz to 240 MHz Flash Memory: 4MB Wireless: WiFi 802.11 b/g/n Bluetooth 4.2 BLE GPIO: Up to 22 available Operating Voltage: 2.7V – 3.6V (3.3V typical) Interfaces: UART, SPI, I2C, PWM, ADC, DAC, SDIO Package Type: SMD (38-pin castellated module) Antenna: Onboard PCB antenna Frequency: 2.4 GHz Dimensions: approx. 25.5 × 18 × 3 mm �� Module Variants Explained ESP-32 (Original) – Standard version with integrated PCB antenna and 4MB flash. Suitable for most general-purpose applications. ESP32E – Improved revision with better RF performance and stability. Commonly used in newer designs requiring more reliable wireless communication. ESP32S – Variant with PCB antenna and optional external antenna support via IPEX pad (requires resistor modification). Ideal for applications needing flexible antenna options. �� Typical Applications Custom IoT product development Embedded wireless control systems Smart home and automation devices Wireless sensor networks Compact PCB-based electronics Industrial and consumer electronics ⚠️ Important Notes Available variants: ESP-32, ESP32E, ESP32S (select before purchase) This is a bare module – no headers or USB interface included Requires external USB-to-TTL programmer for firmware upload 3.3V logic only – not 5V tolerant Designed for soldering onto PCBs, not breadboard use Antenna performance depends on PCB layout and clearance �� Package Includes 1 × ESP32 Module (selected variant) �� Recommended Accessories (Not Included) USB to TTL Serial Adapter – required for programming 3.3V Regulator Module – stable power supply Prototype PCB or Custom PCB – for integration ESP32 Programming Board – simplifies flashing and testing
