ESP32-WROOM-32E

ESP32-WROOM-32E Wifi and Bluetooth Module

Esp32 32 Bit 240Mhz PCB Antenna 4Mb Flash Dual Cpu Iot Home Automation Industrial Machine Control

     ESP32-WROOM-32E is an original WiFi + Bluetooth + Bluetooth LE module from Espressif. It contains the ESP32-D0WD-V3 chip, 4MB SPI flash, 40MHz crystal and a PCB antenna printed on the board; all combined under a metal shield can in a single 18mm x 25.5mm x 3.1mm SMD module. The chip has two individually controllable Xtensa LX6 cores, the clock is adjustable between 80MHz and 240MHz; it includes 520KB SRAM, 448KB ROM and 16KB SRAM in RTC.

     The module supports 802.11b/g/n WiFi (up to 150Mbps in 802.11n, 2412MHz - 2484MHz) and Bluetooth V4.2 BR/EDR + Bluetooth LE. Up to 26 GPIOs are brought out on the 38 solder pads on its edges; UART, SPI, I2C, I2S, SD card / SDIO, LED PWM, motor PWM, ADC, DAC, capacitive touch, IR, pulse counter and TWAI (CAN compatible, ISO11898-1) interfaces can be assigned to these pins. It runs on 3.0V - 3.6V, has an operating temperature of -40°C to 85°C and is BQB Bluetooth and REACH / RoHS certified.

     This product is a bare module: it has no USB, regulator or pin headers; it is used by soldering onto your own board. Since the antenna and RF circuit come ready on the module, there is no need to design the WiFi / Bluetooth circuit separately in mass produced smart home, sensor and industrial devices. It is the newer version of the ESP32-WROOM-32 and uses the ESP32-D0WD-V3 (V3) chip revision.

Key features:

     Original Espressif module: ESP32-D0WD-V3 chip, 4MB flash, 40MHz crystal and PCB antenna in a single module under a metal shield can; the RF design is ready and certified.

     Dual core 240MHz: Two individually controllable Xtensa LX6 cores run between 80MHz - 240MHz; the low power coprocessor can monitor peripherals while the main CPU is off.

     WiFi and Bluetooth together: 802.11b/g/n WiFi (up to 150Mbps) and Bluetooth V4.2 BR/EDR and Bluetooth LE work in the same module.

     Rich interfaces: Up to 26 GPIOs; UART, SPI, I2C, I2S, SDIO, ADC, DAC, capacitive touch, motor PWM and TWAI (CAN compatible) interfaces.

     Wide temperature range: Works between -40°C and 85°C; suitable for home, agricultural and industrial environment devices.

Features:

• Product type: WiFi + Bluetooth + Bluetooth LE MCU module (original Espressif)
• Model: ESP32-WROOM-32E (4MB flash, PCB antenna)
• Chip: ESP32-D0WD-V3
• Processor: Xtensa dual core 32-bit LX6, 80MHz - 240MHz
• Memory: 520KB SRAM, 448KB ROM, 16KB SRAM in RTC
• Flash: 4MB SPI flash
• WiFi: 802.11b/g/n, up to 150Mbps in 802.11n, A-MPDU and A-MSDU, 0.4µs guard interval
• WiFi frequency: 2412MHz - 2484MHz
• Bluetooth: Bluetooth V4.2 BR/EDR and Bluetooth LE, class 1 / 2 / 3 transmitter, AFH, CVSD and SBC
• Antenna: On-board PCB antenna
• GPIO: Up to 26 GPIOs (5 of them strapping pins), 38 pins in total
• Interfaces: SD card, UART, SPI, SDIO, I2C, LED PWM, motor PWM, I2S, IR, pulse counter, capacitive touch, ADC, DAC, TWAI (ISO11898-1)
• Crystal: 40MHz
• Operating voltage: 3.0V - 3.6V (power supply must deliver at least 500mA)
• Current (WiFi transmit, 802.11b 1Mbps): average 239mA, peak 379mA
• Certifications: Bluetooth BQB, RF (FCC / CE-RED / SRRC), REACH / RoHS
• Operating temperature: -40°C - 85°C
• Material: Metal shield can (RF shield), PCB with SMD solder pads
• Dimensions: 18mm x 25.5mm x 3.1mm

Usage information:

• The module is soldered to the board as SMD. Connect a regulated 3.3V supply able to deliver at least 500mA to the 3V3 pin, place a decoupling capacitor close to the supply; the module runs when the EN pin is high.
• To upload firmware connect a USB-TTL converter to the TXD0 / RXD0 pins; if EN is reset while GPIO0 is held low (GND) the module enters download mode. It is programmed with Arduino IDE and ESP-IDF.
• Place the PCB antenna end at the edge of the carrier board and leave no copper, parts or metal case under and around the antenna; otherwise WiFi / Bluetooth range drops.

Application areas:

•  IoT devices and cloud connected sensor nodes
•  Smart home: socket, switch, lighting and thermostat control
•  Industrial automation and machine control
•  Sensor networks and wireless data logger devices
•  WiFi / Bluetooth control of robots and remote controlled vehicles
•  Smart agriculture: irrigation and greenhouse monitoring
•  Bluetooth audio devices and music streaming
•  Health care and wearable measurement devices
•  POS and payment terminals
•  Mass production of your own ESP32 boards

Precautions:

•  This product is a bare module; it has no USB input, regulator or pin headers. It cannot be plugged directly into a breadboard; soldering or an adapter board is needed.
•  The module runs on 3.0V - 3.6V. 5V supply or 5V signals will damage the module.
•  GPIO0, GPIO2, GPIO5, GPIO12 and GPIO15 are strapping pins; if the circuit connected to these pins changes their levels at boot the module may not start or may not enter download mode.
•  During WiFi transmit the current peaks at 379mA. A weak supply and long wires cause the module to keep resetting itself.

Package contents:

•  1 Piece ESP32-WROOM-32E WiFi Bluetooth Module
•  Note: USB-TTL converter and adapter board are not included in the package.