The FireBeetle 2 features a twin-core Tensilica LX6 with a maximum frequency of 240MHz and was built on the ESP-WROOM-32E from Expressif Systems. The Banana Pi Leaf-S3 incorporates the more recent two-core Tensilica LX7, whereas the XIAO ESP32C3 has a single RISC-V processor (up to 160MHz) (up to 240MHz).
The FireBeetle 2 supports Bluetooth LE and Wi-Fi up to 150 Mbps, the same as other ESP32-based MCUs. However, the FireBeetle only supports Bluetooth 4.2, which is less fast than BLE 5.0 seen on the other two devices.
Ten digital I/Os, five analog inputs, one SPI, one I2C, one UART, one I, one RGB LED, one common LED, one button, and one GDI connection for external displays make up the FireBeetle 2's I/O peripherals.
FEATURES
- ESP32 Dual-core low power main controller, 10uA power consumption
- WiFi+Bluetooth 4.0 Dual-mode Module
- GDI Display Port, easy to connect
- Onboard Charging Circuit and PH2.0 lithium Battery Interface
This gadget offers low power mode and runs at 3.3V. (2mA). A lithium battery PHY 2.0 connection and an inbuilt charge circuit with a 500mA maximum charging current are also included.
The FireBeetle 2 can be programmed using Arduino, Scratch, and eventually MicroPython, according to the Wiki available here. The Wiki appears to offer drivers and Arduino examples for Windows and Mac.
The DFROBOT websites sell The FireBeetle 2. Two boards are being offered by DFROBOT for $7.10 apiece, but delivery costs $20.
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