CPU: Rockchip RK3328 Number of Cores: Quad-Core Cortex-A53 Frequency: 4 x Cortex-A53 Up to 1.3GHz DDR4 RAM: 1GB Network: Internal 10/100/1000M Ethernet Port x 1, USB3.0 converted 10/100/1000M Ethernet Port x 1
CPU: Allwinner H3, Quad-core Cortex-A7 Up to 1.2GHz DDR3 RAM: 256MB/512MB Connectivity: 10/100M Ethernet USB Host: Type-A x 1, 2.54 mm pin x 2 GPIO: 2.54mm pitch 36pin. It includes UART, SPI, I2C, IO etc Power: DC 5V/2A Working temperature: -20?? to 70??
ESP32 SoC (System on Chip) with WiFi and Bluetooth BLE 40MHz Crystal for CPU, 32.768KHz for RTC and low power operation 4MB Flash (32MBit) FTDI231 for the USB to Serial communication Auto-reset for automatic flash of new program On board 3.3V, 0.5A LDO, tested to work upto 1A 2.5dBi Peak Gain, 0.5dBi averange gain antenna
On-board environmental sensors for light, temperature, and barometric pressure Interface for optional OLED 128×64 display USB Interface for power and data with a host computer User pushbutton switches and LEDs 5V to 3.3V power regulation Terminal footprints for external 5V DC and VBAT supplies
