LinkIt Smart 7688 Duo
The Smart Duo combinates a MIPS MPU with an Atmel MCU. Is has WiFi on board and is able to host USB. There are targets for OpenWRT/LEDE and it comes preinstalled with such. You can run Python and Node.js on this device.
The LinkIt Smart 7688 Duo (a compact controller board) is an open development board based on the MT7688 (datasheet) and the ATmega32u4. The board is compatible with Arduino Yun sketches and is based on the OpenWrt Linux distribution. As it is compatible with Arduino, you can use different features from Arduino Yun and LinkIt Smart 7688 Duo. The board offers enough memory and packet storage to enable robust video processing. The platform also offers options to create device applications in Python, Node.js and C programming languages.
580 MHz MIPS CPU Single input single output(1T1R) Wi-Fi 802.11 b/g/n (2.4G) Pin-out for GPIO, I2C, I2S, SPI, SPIS, UART, PWM and Ethernet Port 32MB Flash and 128MB DDR2 RAM USB host Micro SD slot Support for Arduino API (ATmega32U4)
MPU Chipset: MT7688AN Core: MIPS24KEc Clock Speed: 580MHz Working Voltage: 3.3V MCU Chipset: ATmega32U4 Core: Atmel AVR Clock Speed: 8MHz Working Voltage: 3.3V Memory Flash: 32MB RAM: 128MB DDR2 GPIO Pin Count: 3(MT7688AN), 24(ATmega32U4) Voltage: 3.3V PWM Pin Count: 8(Atmega32U4) Voltage: 3.3V Max. Resolution: 16 bits(customizable) ADC Pin Count 12(ATmega32U4) Resolution: 10 bits External Interrupts: 8 Pins and EINT values. Digital PIN ---> EINT D1 --> 3 D3 --> 0 D7 --> 4 SPI/SPIS Pin numbers: S0, S1, S2, S3 Max Speed: 4MHz I2C Pin Number: D2/D3 Speed: 400KHz UART Lite 1 for ATmega32U4, 1 for MT7688AN Pin Number: P8/P9(MT7688AN), D0/D1(ATmega32U4) USB Host Pin Number: P6/P7 Connector Type: Micro-AB Communication Wi-Fi: 1T1R 802.11 b/g/n (2.4G) Ethernet: 1-port 10/100 FE PHY Pin Numbers: P2/P3/P4/P5 User Storage: SD Card Micro SD/SDXC Size: 60.8x26.0mm