FireBeetle 2 ESP32-E (N16R2) IoT Board (Dual-Core 240MHz, WiFi/Bluetooth, LVGL Support)
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Description
The FireBeetle 2 ESP32-E (N16R2) is a low-power IoT development board powered by a dual-core 240MHz Tensilica LX6 processor with 16MB Flash and 2MB PSRAM. It is designed for makers, students, and engineers building connected hardware and memory-intensive graphical user interfaces using LVGL.
Dual-core processing with expanded memory
Driven by the ESP32-WROOM-32E-N16R2 module, the board runs at clock speeds up to 240MHz with 16MB Flash and 2MB PSRAM. It integrates 2.4GHz Wi-Fi and Bluetooth 4.2 BR/EDR and BLE with an onboard PCB antenna for wireless communication.
Extensive peripheral interface support
The board breaks out 17 digital pins, 11 analog inputs, 3 UART interfaces, 1 SPI, 1 I2C, 1 I2S, 2 DAC outputs, and 7 capacitive touch channels. It also includes an onboard WS2812 RGB LED and 16 PWM channels for driving servos and lighting.
Dual power input and onboard battery charging
Power the board via 5V USB-C, external 5V VCC pin, or a 3.7V lithium-ion battery connected through the PH2.0 interface. An integrated charging circuit automatically switches between external power and battery supply seamlessly.
Compact layout and multiple programming options
Measuring 25.4mm by 60mm with stamp-hole edges, the board fits easily into space-constrained enclosures and custom carrier PCBs. Developers can program it using the Arduino IDE, ESP-IDF, or MicroPython.
Dedicated GDI port for display integration
An onboard General Display Interface (GDI) provides plug-and-play screen connectivity without complex pin wiring. Combined with the board's 2MB PSRAM, it easily supports LVGL graphics libraries for building custom control panels and dashboards.
Downloads & documentation
Specifications
| USB-C interface | 5V DC |
| PH2.0 interface | 3.7V Li-ion |
| VCC pin | 5V DC |
| 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 |
| 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 |
| 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 |
| UART Interfaces | ×3 |
| SPI Interface | ×1 |
| I2C Interface | ×1 |
| I2S Interface | ×1 |
| DAC Interface | ×2 |
| Touch Interfaces | ×7 |
| LED PWM Channels | ×16 |
| RGB_LED | WS2812 |
| Display Interface | GDI |
| Interface Compatibility | FireBeetle V2 series compatible |
| Module Size | 25.4mm × 60mm |
| Weight | 23.4g |
In the box
| FireBeetle 2 ESP32-E (N16R2) IoT Microcontroller | 1 |
| 18pin-2.54mm Pitch Pin | 1 |
| 18pin-2.54mm Pitch Pin Female | 1 |
| 14pin-2.54mm Pitch Pin | 1 |
| 14pin-2.54mm Pitch Pin Female | 1 |
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