1.4 Controller + Mega2560 R3 + 12864 Display with Limit Switch & A4988 Stepper Motor Driver DIY Kit forCNC 3D Printer

Introductions:

About Mega 2560:

- Microcontrollers: ATmega2560

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Operating voltage: 5 V

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Input voltage (recommended): 7-12 V

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Input voltage (limits): 6-20 V

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Digital pins I / O: 54 (of which 14 provide PWM output)

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Analog input pins: 16

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DC current by i / o PIN: 40 mA

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DC current for 3.3 V PIN: 50 ma

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Flash memory: 256 KB of which 4 KB used by bootloader

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SRAM: 8 KB

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EEPROM: 4 KB

About 

Ramps 1.4:

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MOSFET controllers / outputs and three thermistor circuits.

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ADDITIONAL SECURITY INTEGRATION 5a and component protection

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Control of additional heating bed 11a fuse

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Suitable for 5 polom step by step

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Pololu pin socket, so they can be easily replaced or removed for future designs.

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I2C I2C and SPI for future expansion.

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Connected to all MOSFET PWM versatility.

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SERVO type connector is used to connect to the final stop, the motor and the light emitting diodes. These connectors are gold plated, nominal current of 3a, very compact.

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On the card to add-is now available from the Kliment-sdramps

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LED indicates when the heater output

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Option 2 motors connected to z prusa Mendel

About 

Limit switch parameter:

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Using 22 AWG wire, copper wire inside is very thick, can be resistant to current voltage 2a, 300V. 

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An insulating layer over a wide range of temperatures, up to 80 degrees. 

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Plug it convenient, to facilitate the use

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Network connection VCC network (+ ramps)

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Connect the black GND cable (de-ramps)

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Green line connection signal (ramps in s)

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