ESP32-WROVER-B 8MB WiFi Bluetooth Development Board with 18650 Battery Holder
The ESP32-WROVER-B is a WiFi-BT-BLE MCU that is designed for a wide range of applications ranging from low-power sensor networks to the most demanding tasks such as voice encoding, music streaming and MP3 decoding. The ESP32-WROVER-B is equipped with a 4-MB external SPI Flash memory and an additional 8-bit SPI RAM (PSRAM).
The integration of Bluetooth, Bluetooth LE and Wi-Fi ensures that it can be used in a wide range of applications and the module is versatile. The current consumption of the ESP32 chip is less than 5 μA, making it suitable for battery-powered devices. The module supports a data rate of up to 150 Mb/s, and the 20 dBm output power in the antenna ensures good coverage. The operating system chosen for the ESP32 is freeRTOS with LwIP; TLS 1.2 with hardware acceleration. Secure (encrypted) OTA update is also supported, allowing users to update their products even after their release with minimal cost and effort.
Technical data:
FLASH: QSPI 4MB Flash / 8MB PSRAM
SRAM : 520 kB SRAM
KEY: reset,BOOT
switch: BAT switch
Power indicator lamp: red
USB to TTL: CP2104
modular interface: SD card、UART、SPI、SDIO、I2C、LED PWM、TV PWM、I2S、IRGPIO、capacitor touch sensor、ADC、DACLNA pre-amplifier
on-board clock: 40MHz crystal oscillator
working voltage: 2.3V-3.6V
working current: about 40mA
sleep current: 1mA
working temperature range: -40℃ ~ +85℃
size: 91.10mmx32.75mmx19.90mm
Power Supply: USB 5V/1A
charging current: 1000mA
battery: 3.7V lithium battery
Wi-Fi: Description
Standard: FCC/CE/TELEC/KCC/SRRC/NCC
protocol: 802.11 b/g/n/e/i (802.11n，speed up to150Mbps)A-MPDU and A-MSDU polymerization，support 0.4μS Protection interval
frequency range: 2.4GHz~2.5GHz(2400M~2483.5M)
Transmit Power: 22dBm
communication distance: 300m
protocol: meet bluetooth v4.2BR/EDR and BLE standard
radio frequency: with -98dBm sensitivity NZIF receiver Class-1,Class-2&Class-3 emitter AFH
audio frequency: CVSD&SBC audio frequency
Package includes:
1 x ESP32-WROVER-B Development Board Module
2 x Goldpin headers