FireBeetle 2 ESP32-UE IoT Development Board 16M Flash 2M PSRAM

The FireBeetle 2 ESP32-UE from DFRobot carries the ESP32-WROOM-32UE-N16R2 module with 16 MB flash and 2 MB PSRAM. The larger memory helps with user interfaces based on the LVGL graphics library. The dual-core processor runs at up to 240 MHz, the module communicates via 2.4 GHz Wi-Fi and Bluetooth 4.2 (Classic and BLE). The module has no antenna on the board but a connector for an external antenna; an antenna for Wi-Fi and Bluetooth is included. An external antenna can be mounted outside an enclosure and increases the range. The board is powered via USB-C or a 3.7 V lithium battery at the PH2.0 connector, it switches automatically and charges the battery via USB.

Same board with antenna on the board: FireBeetle 2 ESP32-E IoT Development Board 16M Flash 2M PSRAM

Recommended Accessories:

• 1.54" 240x240 IPS TFT LCD Display with MicroSD
• 2" 320x240 IPS TFT LCD Display with MicroSD
• Gravity IO Expansion Shield for FireBeetle 2 (ESP32-E/M0)
• JST 2.0 Lipo Connection Cable 15cm with Plug

Features:

• ESP32-WROOM-32UE-N16R2 module, Tensilica LX6 dual core up to 240 MHz
• 16 MB flash and 2 MB PSRAM
• Connector for an external antenna, antenna for Wi-Fi and Bluetooth included
• USB-C for programming and power (4.75 to 5.5 V), CH340 serial chip
• PH2.0 connector for a 3.5 to 4.2 V lithium battery, charging circuit with automatic switching, red charge LED
• GDI connector for DFRobot displays
• WS2812 RGB LED on IO5/D8, LED on IO2/D9, button on IO27/D4
• Solder jumper for low-power mode: when cut, the quiescent current drops by 500 µA, in sleep mode down to 13 µA; the RGB LED then only works with USB power
• IO0, IO1 and IO3 are needed for USB and should not be used otherwise, IO34 to IO39 are inputs only
• Castellated holes on the edge for soldering onto a PCB, pins like the rest of the FireBeetle 2 series

Application Examples:

• User interfaces with LVGL on a GDI display
• Home automation and lighting control
• Remote control of robots
• Recording environmental data
• Devices in metal enclosures or with long radio distance, with external antenna

Documentation:

• Wiki DFRobot DFR1140
• Schematic (PDF)
• Dimension drawing (PDF)
• Datasheet (PDF)

Technical Data:

• Manufacturer: DFRobot
• Manufacturer SKU: DFR1140
• Module: ESP32-WROOM-32UE-N16R2
• Processor: Tensilica LX6 dual core, 240 MHz
• Memory: 520 KB SRAM, 448 KB ROM, 16 MB flash, 2 MB PSRAM
• Clock: 40 MHz and 32.768 kHz crystals
• Wi-Fi: 802.11 b/g/n, 2.4 GHz, up to 150 Mbit/s
• Bluetooth: 4.2 BR/EDR and BLE
• Input voltage: USB-C 5 V DC, PH2.0 battery 3.7 V, VCC pin 5 V DC
• Digital pins (17): IO0, IO1, IO2, IO3, IO4, IO12, IO13, IO14, IO15, IO17, IO18, IO19, IO21, IO22, IO23, IO25, IO26
• Analog pins (11): IO0, IO2, IO4, IO12, IO13, IO14, IO15, IO25, IO26, I34, I35
• Interfaces: 3 × UART, 1 × SPI, 1 × I2C, 1 × I2S, 2 × 8-bit DAC, 7 touch inputs, 16 PWM channels
• Serial chip: CH340
• Display connector: GDI
• Dimensions: 25.4 × 60 mm
• Weight: 23.4 g

Scope of Delivery:

• 1× FireBeetle 2 ESP32-UE IoT Development Board 16M Flash 2M PSRAM
• 1× 2.4 GHz antenna for Wi-Fi and Bluetooth
• 1× pin header 18-pin, 2.54 mm pitch
• 1× female header 18-pin, 2.54 mm pitch
• 1× pin header 14-pin, 2.54 mm pitch
• 1× female header 14-pin, 2.54 mm pitch