RUMBA32 V1.1 User Manual – Rev A
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3
S
PECIFICATIONS
The main specifications for RUMBA32 V1.1 are as follows:
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Microcontroller: STM32F446VET6
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Core Frequency: 180MHz
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Flash Memory: 512kB
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SRAM: 128kB
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EEPROM: 8kB I2C EEPROM
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Stepper Drivers: 6
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SPI Communication Supported
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UART Communication Supported
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TMC DIAG (sensorless homing) Supported
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MOSFET Outputs: 6
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3 Heaters – Maximum Current: 5A
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2 Fans – Maximum Current: 2A
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1 Bed – Maximum Current: 20A
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Thermistor Connections: 5
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Endstop Connections: 6
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Power Supply
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Input Voltage (Recommended): 12-24V
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Input Voltage (Absolute Limits): 6-35V
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12V Rail (max. current 4A)
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5V Rail (max. current 2A)
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3.3V Rail (max. current 600mA)
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Dimensions: 135 x 75mm