Compact 3.5 ESP32 Capacitive Touch Screen Development Board for Arduino

The product features a low-power dual-core 32-bit CPU that can be used as an application processor. Its main frequency reaches up to 240MHz, and the computing power can attain up to 600 DMIPS. It supports UART/SPI/I2C/PWM/ADC/DAC interfaces, as well as TF card (up to 4G) and STA/AP/STA+AP working modes. The device also has Embedded Lwip and FreeRTOS capabilities.

In terms of specifications, the working environment is 4.75-5.25V, -20°C to 70°C, with relative humidity below 90%. The default SPI Flash size is 32Mbit, and it has a built-in 520KB SRAM. The default serial port rate is 115200bps, and it supports Bluetooth 4.2 BR/EDR and BLE standards. There are 9 IO ports, and the spectrum range is 2400-2483.5MHz. The onboard PCB antenna has a gain of 2dBi.

Regarding image output, the device supports JPEG (only for OV2640), BMP, and GRAYSCALE formats. The transmit power is 17±2dBm (@11Mbps) for 802.11b, 14±2dBm (@54Mbps) for 802.11g, and 13±2dBm (@MCS7) for 802.11n. The receiving sensitivity is -90dBm for CCK, 1Mbps, -85dBm for CCK, 11Mbps, -88dBm for 6Mbps (1/2BPSK), -70dBm for 54Mbps (3/464-QAM), and -67dBm for MCS7 (65Mbps, 72.2Mbps).

Power consumption varies depending on the mode: 180mA@5V with the flash turned off, 310mA@5V with the flash turned on and brightness at maximum, 6mA@5V in deep-sleep mode, 20mA@5V (min) in modem-sleep mode, and 6.7mA@5V (min) in light-sleep mode. The device supports WPA/WPA2/WPA2-Enterprise/WPS security protocols.

Several display options are available, including 0.96" OLED (white), 1.3" OLED (white), 1602 LCD (16x2), 20x4 Display IIC, 1.44" TFT LCD, and 1.8" TFT LCD. These displays can be added to the cart for purchase.

The 2.4" ESP32 Touchscreen, 2.8" ESP32 Touchscreen, 3.5" TFT LCD, 3.2" ESP32 Touchscreen, 3.5" ESP32 Touchscreen, and 4.3" ESP32 Touchscreen are also available, with various resolutions, touch panel types, and ESP32 variants. These touchscreen displays can be added to the cart as well.

For the 3.5" ESP32 Touchscreen, it is a combination of an ESP-WROOM-32 ESP32 development board and a 3.5-inch display with capacitive touch. There are two ways to upload code to the touchscreen: via an IDE or the ESP32 flash tool. This device is suitable for remote environment data collection, remote data fusion, remote parameter settings, and other IoT field applications.

product information: