ESP32 development board, standard 2.8-inch TFT screen and resistor TP, support one-key automatic download, provide LVGL demo and arduino examples 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