ESP32-WROOM-32U Wi-Fi Bluetooth Module – Audio CVSD/SBC, On-Chip Hall Sensor, 40 MHz Crystal
The ESP32-WROOM-32U is a versatile wireless module featuring dual-mode Wi-Fi and Bluetooth connectivity. It supports audio processing with CVSD and SBC codecs, integrates an on-chip Hall sensor, and includes a 40 MHz crystal oscillator for accurate timing. The module is based on the ESP32 SoC, making it ideal for high-performance IoT, embedded systems, and multimedia applications.
This module is suitable for smart home devices, audio streaming applications, wireless sensors, and wearable electronics requiring integrated sensing and wireless communication. Its U.FL connector allows external antenna attachment for improved signal range.
KEY FEATURES
- Dual-mode Wi-Fi and Bluetooth connectivity
- Supports CVSD and SBC audio codecs
- On-chip Hall sensor for magnetic field detection
- Integrated 40 MHz crystal for precise timing
- Rich peripheral interfaces: UART, SPI, I2C, ADC, DAC, PWM
- Low-power operation with multiple sleep modes
- Compact PCB module design with U.FL antenna connector
SPECIFICATIONS
- Operating Voltage = 3.0-3.6V DC
- Wi-Fi = 802.11 b/g/n
- Bluetooth = v4.2 / BLE
- Audio Codecs = CVSD, SBC
- On-Chip Sensor = Hall sensor
- Crystal Frequency = 40 MHz
- Flash Memory = 4MB typical
- RAM = 520KB SRAM
- Communication Interfaces = UART, SPI, I2C, ADC, DAC, PWM
- RF Output Power = 20 dBm max
- Operating Temperature = -40 to 85°C
- Module Size = Approx 18 x 25.5 mm
INTERFACES
- VCC = 3.3V power input
- GND = Ground
- TXD / RXD = UART serial communication
- SPI = SPI interface pins
- I2C = SDA / SCL lines
- ADC / DAC = Analog input/output
- GPIO = Programmable digital I/O pins
- ANT = U.FL external antenna connector
