R73 is the 7th generation 3D printer controller developed by WEEDO3D. It uses a 32bit large capacity mcu, stm32F103vet6, with 512k flash and 64k ram. R73 has 4 endstops, 2 runout sensors, 1 proximity switch, 3 thermistor inputs, and 6 stepper motors, 2 nozzle heating, 1 heated bed, 5 fan output. And support DGUS touch screen, WIFICAM and power management module. Due to the integrated interface, the R73 port is very simple and clear.