3D printer controllers

1) If the red status indicator on the board does not work: When the firmware update operation is completed, the indicator will stop flashing. If the indicator does not flash during the firmware update process, it may be that the firmware name in the SD ca

1）ARM Cortex-M3 series STM32F207VCT6 chip with 32-bit CPU 120MHz; Upgrade the firmware by SD card. It is easy and convenient to operate. - 2）This display board has higher compatibility. Users can select two work modes:UART serial port screen mode and