The FireBeetle series by DFRobot is a line of development boards and modules designed for Internet of Things (IoT) and wearable projects. It is fully compatible with Arduino development environment
Specifications
Microcontroller ESP8266 Tensilica L106 (32-bit MCU)
Power supply interface USB or 3.7V Lipo
USB Powered or External (V) 3.3 – 5.0
Operating Voltage (V) 3.3V
CPU Frequency (MHz) 160
Flash(M) 16
SRAM(KB) 50
DC Current in the Low-Power-Consumption: 46uA
Average Operating Current: 80mA
Maximum Discharging Current: 600mA (LDO-3.3 Output)
Maximum Charging Current: 500mA
Analog pins 1
Digital pins 10
Wi-Fi protocol 802.11b/g/n
Frequency range 2.4 – 2.5 GHz
UART 1
I2C 1
I2S 1
SPI 1
USB Micro USB
Dimension(mm) 58*29
Weight (g) 24 g
Built-in 32-bit Tensilica L106 MCU and 10-bit ADC
Mounting Hole Dimension: 53 x 24(mm)