FireBeetle 2 ESP32-E IoT Microcontroller (N16R2)
This FireBeetle 2 development board has 16M Flash and 2M PSRAM, which helps to drive applications like the LVGL graphics library used in interface design and interaction. Powered by Espressif’s ESP32-WROOM-32E-N16R2 module, it includes a 32-bit dual-core processor running at up to 240MHz.
Supporting USB-C and an external 3.7V lithium battery power supply, it can automatically switch between power sources in dual power supply mode. It also has USB and external DC charging modes. This board is great for IoT projects with dual-mode communication support for WiFi and Bluetooth.
We now stock two variants of this board:
- Onboard PCB Antenna = FireBeetle 2 ESP32-E (SKU DFR1139)
- External Antenna (With a 2.4GHz antenna included) = FireBeetle 2 ESP32-UE (SKU DFR1140)
The main advantage of external antennas is that they can provide higher gain, which improves the communication range of Bluetooth or WiFi.
Features
- Equipped with ESP32-WROOM-32E-N16R2 dual-core module
- Clock frequency up to 240MHz, with 16M Flash and 2M PSRAM for large memory capacity
- Low-power development board, supporting dual-mode communication of WiFi and Bluetooth
- Onboard GDI display interface for quick connection to display screens
- Onboard charging circuit and PH2.0 lithium battery interface, supporting dual power supply and automatic switching
- Supports various programming methods such as Arduino IDE, ESP-IDF, Micro-Python
- Compact design, small size, suitable for space-limited and embedded IoT projects
What’s on Board
| No. | Function | Description |
| 1 | USB Interface | Program download and power supply, 4.75V-5.5V compatible |
| 2 | Charging Indicator | Red LED for indicating charging status: 1. Off when fully charged or not charged; 2. On when charging; 3. Quick flash when powered by USB, and no battery connected. |
| 3 | User Button | Controlled by pin IO27/D4 |
| 4 | Li-ion Battery Port | Support 3.5V-4.2V |
| 5 | Onboard RGB Light | WS2812 RGB LED, controlled by pin IO5/D8 |
| 6 | Onboard LED | LED controlled by pin IO2/D9 |
| 7 | Reset Button | Press to reset the program |
| 8 | Low-power Solder Jumper Pad | Designed for low power mode and default to be connected. Slightly cut off the thin wire with a knife to disconnect it. |
| Note: when the pad is disconnected, you can only drive RGB LED light via the USB Power supply. | ||
| 9 | GDI | DFRobot dedicated Display interface. Refer to the GDI part of this page. |
| 10 | ESP32-E Module | ESP32-WROOM-32E-N16R2 |
Specifications
Power Parameters
- Input Voltage
- USB-C interface: 5V DC
- PH2.0 interface: 3.7V Li-ion
- VCC pin: 5V DC
MCU Parameters
- Processor: Tensilica LX6 dual-core processor (one core for high-speed connectivity, one core for independent application development)
- Clock Frequency: 240MHz
- SRAM: 520KB
- ROM: 448KB
- Flash: 16MB
- PSRAM: 2MB
- On-chip Clock: 40MHz crystal oscillator, 32.768KHz crystal oscillator
Wireless Parameters
- Wi-Fi Standard: FCC/CE/TELEC/KCC
- Wi-Fi Protocol: 802.11 b/g/n/d/e/i/k/r (802.11n, up to 150 Mbps), A-MPDU and A-MSDU aggregation, supports 0.4us protection interval
- Wi-Fi Frequency Range: 2.4~2.5 GHz
- Bluetooth Protocol: Compliant with Bluetooth V4.2 BR/EDR and BLE standards
- Bluetooth Audio: CVSD and SBC audio
- Bluetooth Frequency Range: 2.4~2.5GHz
Peripheral Parameters
- Digital Pins 17x: IO0, IO1, IO2, IO3, IO4, IO12, IO13, IO14, IO15, IO17, IO18, IO19, IO21, IO22, IO23, IO25, IO26
- Analogue Pins 11x: IO0, IO2, IO4, IO12, IO13, IO14, IO15, IO25, IO26, I34, I35
- UART Interfaces: 3x
- SPI Interface: 1x
- I2C Interface: 1x
- I2S Interface: 1x
- DAC Interface: 2x
- Touch Interfaces: 7x
- LED PWM Channels: 16x
- RGB_LED: WS2812
- Display Interface: GDI
Other Parameters
- Interface Compatibility: FireBeetle V2 series compatible
- Module Size: 25.4mm x 60mm
- Weight: 23.4g
Resources
- Product wiki
- Pinout
- Dimension
- Getting Started (Use for the first time)
- Arduino Tutorials
- Datasheet
- Schematic
- 2D File
- STP File
- Shell stl file
Pinout
Package Contents
- 1x FireBeetle 2 ESP32-E (N16R2) IoT Microcontroller
- 1x 2.4GHz WiFi and Bluetooth antenna (For the External Antenna version only)
- 1x 18-pin-2.54mm Pitch Pin
- 1x 18-pin-2.54mm Pitch Pin Female
- 1x 14-pin-2.54mm Pitch Pin
- 1x 14-pin-2.54mm Pitch Pin Female
