ESP32-DevKitC core board ESP32 development board

The ESP32-WROOM-32D is a WiFi and Bluetooth module using the popular ESPRESSIF ESP32 (ESP32-D0WD) chip. The pads on the module have a 1.27mm spacing. This is the original module, manufactured by Espressif.

It is a pin and software compatible, improved version of the original ESP32-WROOM-32(ESP-WROOM-32) module from Espressif. It is recommended by Espressif as an upgrade to the ESP32-WROOM-32.

The ESP32 chip integrates a dual-core processor with 448 KByte ROM, 520 KByte SRAM, 16 KByte SRAM in RTC, 802.11 b/g/n/e/I Wi-Fi, Bluetooth v4.2 BR/EDR & BLE, clocks & Times, abundant peripheral Interfaces and security mechanism.

Software can be developed using many different platforms, including Arduino. It is designed for Generic low power IoT sensor hub, loggers, video steaming for camera, Wi-Fi & Bluetooth enabled devices, Home automation and mesh network applications, aimed at makers, hardware engineers, software engineers and solution provides.

The ESP32 is the most integrated solution for Wi-Fi + Bluetooth applications in the industry with less than 10 external components. ESP32 integrates the antenna switch, RF balun, power amplifier, low noise receive amplifier, filters, and power management modules. As such, the entire solution occupies minimal Printed Circuit Board (PCB) area.

The ESP32-WROOM-32D comes in a 32 and 128MBit(4 and 16 MByte = MB) version. This is the 128MBit version. The 32MBit has a blue dot, and the 128MBit module a green dot on the front of the module.
Features

    CPU and Memory: Xtensa® 32-bit LX6 Dua-core processor, up to 600 DMIPS
    Chip ESP32-D0WD
    4 MByte(32Mbit) SPI Flash
    448 KByte ROM
    520 KByte SRAM
    16 KByte SRAM in RTC
    PCB Antenna Connector
    Supply Voltage: 2.2V~3.6V

WiFi

    802.11 b/g/n/e/i
    802.11 n (2.4 GHz), up to 150 Mbps
    802.11 e: QoS for wireless multimedia technology.
    WMM-PS, UAPSD
    MPDU and A-MSDU aggregation
    Block ACK
    Fragmentation and Defragmentation
    Automatic Beacon monitoring/scanning
    802.11 i security features: pre-authentication and TSN
    Wi-Fi Protected Access (WPA)/WPA2/WPA2-Enterprise/Wi-Fi Protected Setup (WPS)
    Infrastructure BSS Station mode/SoftAP mode
    Wi-Fi Direct (P2P), P2P Discovery, P2P Group Owner mode and P2P Power Management
    UMA compliant and certified
    Antenna diversity and selection

Bluetooth

    Compliant with Bluetooth v4.2 BR/EDR and BLE specification
    Class-1, class-2 and class-3 transmitter without external power amplifier
    Enhanced power control
    +10 dBm transmitting power
    NZIF receiver with -98 dBm sensitivity
    Adaptive Frequency Hopping (AFH)
    Standard HCI based on SDIO/SPI/UART  High speed UART HCI, up to 4 Mbps
    BT 4.2 controller and host stack
    Service Discover Protocol (SDP)
    General Access Profile (GAP)
    Security Manage Protocol (SMP)
    Bluetooth Low Energy (BLE)
    ATT/GATT
    HID
    All GATT-based profile supported
    SPP-Like GATT-based profile
    BLE Beacon
    A2DP/AVRCP/SPP, HSP/HFP, RFCOMM
    CVSD and SBC for audio codec
    Bluetooth Piconet and Scatternet

Dimensions: 48mm x 27.8mm