Parameter：

Use low-power dual-core 32-bit CPU, which can be used as an application processor.

The main frequency is up to 240MHz, and the computing power is up to 600 DMIPS

Built-in 520 KB SRAM

Support UART/SPI/I2C/PWM/ADC/DAC and other interfaces

Support OV2640 and OV7670 cameras, built-in flash

Support picture WiFI upload

Support TF card

Support multiple sleep modes.

Embedded Lwip and FreeRTOS

Support STA/AP/STA+AP working mode

Support Smart Config/AirKiss one-click network configuration

Support secondary development

Specifications

Working voltage 4.75-5.25V

SPIFlash default 32Mbit

RAM internal 520KB

Wi-Fi 802.11b/g/n/e/i

Bluetooth Bluetooth 4.2BR/EDR and BLE standard

Support interface (2Mbps) UART, SPI, I2C, PWM

Support TF card, maximum support 4G

IO port 9

Serial port rate default 115200bps

Spectrum range 2400 ~2483.5MHz

Antenna form Onboard PCB antenna, gain 2dBi

Image output format: JPEG (only OV2640 support), BMP, GRAYSCALE

Packaging method DIP-16

Transmit power 802.11b: 17±2dBm (@11Mbps)

802.11g: 14±2dBm (@54Mbps)

802.11n: 13±2dBm (@MCS7)

Receiving sensitivity CCK, 1Mbps: -90dBm

CCK, 11Mbps: -85dBm

6Mbps(1/2BPSK): -88dBm

54Mbps (3/464-QAM): -70dBm

MCS7 (65Mbps, 72.2Mbps): -67dBm

Power consumption Turn off the flash: 180mA@5V

Turn on the flash and adjust the brightness to the maximum: 310mA@5V

Deep-sleep: The lowest power consumption can reach 6mA@5V

Moderm-sleep: the lowest can reach 20mA@5V

Light-sleep: the lowest can reach 6.7mA@5V

Security WPA/WPA2/WPA2-Enterprise/WPS

Working temperature -20 ℃~ 70 ℃

Storage environment -40 ℃~ 125 ℃, <90%RH

Application

Home smart device image transmission

Wireless monitoring

Smart agriculture

QR wireless recognition

Wireless positioning system signal

And other IoT applications