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RepRap Mega Pololu Compatible Shield - RAMPS (HC3DPR0002)

Posted: Wed Jul 31, 2013 6:21 pm
by admin
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Description:

RepRap Arduino Mega Pololu Shield, or RAMPS for short. It is designed to fit the entire electronics needed for a RepRap in one small package for low cost. RAMPS interfaces an Arduino Mega with the powerful Arduino MEGA platform and has plenty room for expansion. The modular design includes plug in stepper drivers and extruder control electronics on an Arduino MEGA shield for easy service, part replacement, upgrade-ability and expansion. Additionally, a number of Arduino expansion boards can be added to the system as long as the main RAMPS board is kept to the top of the stack.

Version 1.4 uses surface mount capacitors and resistors to further cover edge issue cases.


Features:
  • It has provisions for the cartesian robot and extruder.
    Expandable to control other accessories.
    3 mosfets for heater / fan outputs and 3 thermistor circuits.
    Fused at 5A for additional safety and component protection
    Heated bed control with additional 11A fuse
    Fits 5 Pololu stepper driver board
    Pololu boards are on pin header sockets so they can be replaced easily or removed for use in future designs.
    I2C and SPI pins left available for future expansion.
    All the Mosfets are hooked into PWM pins for versatility.
    Servo style connectors are used to connect to the endstops, motors, and leds. These connectors are gold plated, rated for 3A, very compact, and globally available.
    SD Card add on available -- Available now made by Kliment - Sdramps
    LEDs indicate when heater outputs on
    Option to connect 2 motors to Z for Prusa Mendel
Connections:

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Schematic:

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FAQ:
What is the additional diode supplied with this board for?
The diode (D1) is an optional component that can be fitted depending on what supply voltage you are applying to the ramps shield. Without the diode fitted you will need to power your mega separately i.e.USB cable or adapter. With it fitted to D1 the ramps shield will power your mega from its supply. However, please be aware, when fitted you must not power your ramps shield with a supply greater than 12V otherwise you may damage your mega.

Manual:
RAMPS_1-4manual.zip

Re: RepRap Mega Pololu Compatible Shield - RAMPS (HC3DPR0002)

Posted: Sat Mar 23, 2019 1:29 am
by ILYBTodd
Are these Hobby Component built boards?
Main concern I'm reading about elsewhere for the Chinese RAMPS boards is the quality of the mosfets.
Please comment on specification of power mosfets.

Re: RepRap Mega Pololu Compatible Shield - RAMPS (HC3DPR0002)

Posted: Sat Mar 23, 2019 2:16 am
by ILYBTodd
What amperage are the Power green connectors rated for?

Re: RepRap Mega Pololu Compatible Shield - RAMPS (HC3DPR0002)

Posted: Sat Mar 23, 2019 2:16 am
by ILYBTodd
What voltage are the poly fuses rated at?

Re: RepRap Mega Pololu Compatible Shield - RAMPS (HC3DPR0002)

Posted: Sat Mar 23, 2019 1:00 pm
by andrew
Current stock is fitted with a 16GF1100 (MRF1100) and a 30UF500 (MRF500). The 16GF1100 is rated at 16V max, and the 30UF500 is rated at 30V max.

The power terminals are rated at 12A.