Robin Nano - 32-bit motherboard - 12V / 24V

Version: 3.1

Robin nano V3.1 is an upgraded version of Robin Nano V3.0, change the MCU from STM32F407VGT6 to STM32F407VET6. What is more, Robin Nano V3.1 improves the anti-interference performance, such as adding Schottky diodes to the temperature measurement circuit and MOS circuit, and adding TVS protection to the power input.

• Processor: Cortex-M4 with 32-bit FPU, 168 MHz, 192KB RAM, 512KB flash memory.
• Compatible with printing via USB or screen.
• Support Virtual USB Device: Connect the computer with a USB cable, you can read and write on the computer as if the motherboard is a USB disk. Both the TF card and U disk on the motherboard are also supported. This way, you don't need to plug in and out the TF card and USB disk to copy gcode files.
• Supports many typs of LCD.
• And SPI connection with WIFI module: the tramission rate will be much higher than that of a serial (current firmware still only supports serial port tramission, and SPI transmission wull soon be stand by).
• Double Z-axis support: paralled from the Z axis motor interface, when you use dual extrusion heads, you can also use dual Z axis.
• Supports 2 PWM controllable fans, which is convenient for controlling the fans switch more flexibly.
• Reserve independent serial port.
• Lead TTL PWM signals: at present, more and more people are manufacturing 3D printing and laser engraving two-in-one machines, and the laser heads with higher power require TTL PWM control signals.

Firmware based on Marlin 2. The repository here.

More info.