Introduction: Wiring 3D Printer RAMPS 1.4

I've had both requests about how to wire a 3D Printer and more specifically, how I wired my Laminated Prusa I3 printer.

In that instructable I will walk through each the components and steps required to setup a 3D Pressman using the most commonly used RAMPS 1.4 comptroller table.

Please observe that although most components on the 3D printer run 12Volts and less. You do pauperism to connect your power brick to 110 Volts. Make up CAREFULL, YOU ARE DEALING WITH LIVE POWER.

Also some of the Parts of a printer can get very hot (specifically the Extruder Hot-finish and Heated Bed).

On that point are many different boards on the market and I've personally had swell luck with the KFB2.0 add-in with acts well-nig identical to the RAMPS 1.4 but uses slightly different connectors.

All parts mentioned in that instructable are sourced from Amazon.com. If you are patient, you could order of magnitude them from AliExpress.com and pay a lot less (sometimes less than half).

Step 1: Parts Required

In the Laminated Prusa I3 printer the only electronic parts I added were the Nema 17 Hoofer motors and the MK8 Extruder.

The Type of extruder you buy is up to you. You can opt from Point-blank Extrusion (centrifugal on the Extruder) operating theater a Bowden type of extrusion (motor feeds filamant through a tube to Hot-end) but it won't make a difference in hooking them in the lead.

For this setup I purchased a RAMP 1.4 Kit which has wholly components needed to setup the controller board

RAMPS 1.4 kit $38.99 http://amzn.to/2E3gvYc

Nema 17 1.7A (5 plurality) http://amzn.to/2Fyzy9I

Mk8 Extruder $36.99 http://amzn.to/2Gzd4H6

For stop stop control you can go with two options (I will talk over wiring for both):

The fully wired Limit switching (with cables): $7.98 http://amzn.to/2DSkvHS

The deltoid Little Switch: $8.99 http://amzn.to/2Ev4YPi

Stepper Cables: $9.49 http://amzn.to/2GAPdXo (these are specific to RAMPS)

12V/30Amp Power supply 19.98: http://amzn.to/2FwxIGt

Power Telegraph $9.99 HTTP://amzn.to/2DYZ0Zd

Heated up Bed $31.99 (optional but will describe wiring) http://amzn.to/2GEibpk

it was acanthous prohibited, some of the pictures show wires directly screwed into components. IT best to use up ramify connectors and ferrules for better connectivity:

Ferules kit out (comes with prissy crimping tool): Virago $25.89 https://amzn.to/2Jy3oSB

Fork terminals: Amazon $6.69 https://amzn.to/2JqRcmi

Measure 2: Assembling the RAMPS 1.4

The RAMPS 1.4 kit out comes with the chase components:

Arduino Dining table Mega 2560 (generally a cheap clone) which is the blue board you see supra

RAMPS 1.4 Shield which will sit happening top of the Arduino which is the red board above (yes the yellow fuses come dented like that don't worry)

Jumpers (the little black thingies preceding)

A4988 Stepper Drivers with warmth sinks

an Liquid crystal display with cables, which nowadays tends to be the bigger 12864 Explicit Sharp Display Controller

a USB cable, that is never long enough to reach your computer (be prepared)

Assembly is atomic number 3 follows:

The Shield should fit right top of the Arduino board. The USB port along the Arduino should be on the same side as the Green power connector on the Shield. Make sure that all the pins from the tush of the shell line up with the connectors on the Arduino. Push both boards snuggly together (this may sting a gnomish)

Step 3: Add u Stepper Drivers

Before adding the High stepper Drivers you need to adjudicate what type of micro stepping is required by the 3D Pressman. I'm not going explain what exactly IT means (thither is plenty of articles on it). in widespread, when you buy a 1.8 deg. footprint angle (200 stairs/revolution), the micro stepping becomes a multiplier. What's important is that for the RAMPS 1.4 almost precise stepping is 1/16th micro stepping (16 x 200 = 3200 steps/rotation).

Systematic to instruct the hardware to use of goods and services 1/16th micro stepping, jumpers are added between the banks in which the high stepper drivers will fit. For 1/16th stepping you need to add tierce jumpers low-level all driver. Hold sure they are on straight, it's easy to plunge one of these past the actual pin.

At this aim you can insert the Stepping motor drivers (assume adding all 5 X, Y, Z Extruder 1 and potentially Extruder 2)

Same IMPORTANT!! Note how the drivers A4988 High stepper drivers above have a little potentiometer on top (this little Phillips screw). When inserting your stepper Number one wood MAKE SURE THE Pot POINTS AWAY FROM THE BOARDS Magnate Remainder (GREEN Connective).

If you use other drivers like the DRV88 or the TMC2xxx they will be different. fellow instructable member reschchrissi added a useful image in the comments (Thank you!).

If you are still uncertain: Find a labeled pin happening same or more corners of the stepper number one wood board (DIR, GND, ENABLE, VMOT) and mates it up to the RAMPS pinouts.

I hate to say this but, sometimes you'll find that the bays for these hoofer drivers are as well close, or the edges of your stepper driver are a bit too wide. In the image preceding you can see a gap 'tween the top two drivers, whereas the bottom ones scarcely conditioned. It might lay down for a very tense fit and in cases where it doesn't healthy, you may have to file some of the edges from the stepper device driver.

Once the drivers are in you can remove the 3M stickers from the heat sinks and position them happening top of the cow dung on each number one wood.

Step 4: Adding the Liquid crystal display

The LCD component part of the kit consists of 4 components

  1. The LCD itself
  2. 2 flat cables
  3. LCD Smartness Adapter that connects to the Shield

The Adapter will fit happening top of the the RAMPS 1.4 Shield as seen in the images above.

It's a trifle hard to see on the intense Adaptor I have present, simply but you can kind of produce out that the left connector (10 pins) says EXP2 and the right connector says EXP1. These correspond with the EXP1 and EXP2 connectors along the LCD board

Step 5: Adding Power Source

As you can learn in the image above (from

http://reprap.org/mediawiki/images/6/6d/Rampswire1...)

big businessman comes in connected two tracks into the Ramps 1.4 shield. One chase away is 12V 5A which powers the plank and motors, the second cover is 12V 11A which powers the heated elements alike the extruder and het up bed.

Connect the wires as seen in the images. Exist protective, as you can see, the 110V live telegram is exposed. Unplug your power source prior to lifting the lid accessing the screws.

Since we're dealing with potentially 20Amp here, make sure you use a strong adequate wire gage. I think 14 to 16 leave do.

Also, note that when you plug in the RAMPS 1.4 with a USB cable to your electronic computer the Liquid crystal display wish come one and you dismiss program the Arduino that way. There is no power to run any motors surgery heating elements though. For that, you do call for the international power source.

Earlier image here showed wires plugged in without ferrules and the great power plunder remains somewhat exposed without further process. Nonpareil of the first affair I recommend you print is the power whole cover from thingiverse: https://www.thingiverse.com/affair:3347689 that I've used in one form Oregon some other on several of my some other designs. it covers up (and fuses) altogether mains wires and allows for on/off nation which presently is missing from this printer.

Assembly of this power unit can Be found in mistreat 14 of https://www.instructables.com/id/3D-Printer-the-C3...

Step 6: Connecting the Stepper Motors

A 3D pressman wish use stepping motor motors for the following functions:

  • X motion (leftmost/right)
  • Y motion (front/back)
  • Z motion (up/depressed) (common to have deuce stepper motors)
  • Extruder 1
  • Possibly Extruder 2

Remember in a previous step we added 5 high stepper drivers. Technically we only need 4 as most printers do not have a second extruder (incomparable toilet always plan, although dual extruders are fraught with issues).

Stepper motors interject many varieties and with assorted power specifications. The printer built in the previous instructable uses Nema 17 0.4Amp Stepper motors. These aren't the strongest steppers but they do just fine. My CoreXY printer that can handle more speed/torque runs 2.0Amp stepping motor motors.

When I purchase Steppers motors I do tend to buy the ones that have a cable system spark plug in them. That way I don't take to spate with crimping wires myself.

Generally the Nema 17 Hoofer motors and associated cables are configured aright, so when you plug them in, they'll run at first try. If your stepper motor is making funky jumps or just shakes, it generally means the wires from the motor Don River't line up with the 2B 2A 1A 1B pins on the board.

If that happens you'll need to closely appear at the data plane that generally is shown when you purchase the steppers (operating theatre it will suppose something alike Black(A+), Green(A-), Red(B+), Blue(B-)). Given when the wires don't strain up it toilet be a minute of a puzzle nerve-racking to figure come out of the closet the proper combination.

In the video integrated here you can see how an off the shelf stepper and away the shelf cable properly operate the Nema 17. (btw, don't gulf wires like I neutralise the video, I undergo plenty of spares in case it goes mistaken).

If you're building a Prusa/RepRap type printer, you'll employ 2 stepper motors for the Z-Axis of rotation. The RAMPS 1.4 shield has accounted for this and offers two rows of connection pins for the Z-Axis.

Step 7: Copulative End Boodle

Nowadays you lav buy really fancy stepper drivers that feel resistance. On with Marlin software program changes you can do endlessly stops. In most printers though, you'll need conclusion stops to make predestined your X/Y and Z axis father't run off the vituperate (or worse; tear something of your printer aside).

The RAMPS 1.4 comes with 6 end stop connections (X Min, X Max, Y Min, Y Max, Z Minute, Z Soap). Rarely do you use all vi. What you're really interested in is either the Max Beaver State Min. If you know one, you can limit movement supported on it's location (0) via the software (if I can detect Taiwanese and know my bed is simply 200mm wide past I can tell the software to not move beyond min+200)

The most common types of destruction Newmarket are mechanical swithes, optical switches and proximity sensors. Proximity Sensors tend to only exist used for the Z-Axis in conjunction with Auto Bed Leveling. I won't cover inductive sensing element wiring present but if you're interested, I did write something on the wiring in this article Proximity-Sensor-Detective work LJ12A3-4-Z-BX vs LJ12A3-4-Z/BY wiring

I've never used Optical sensors before but it is my understanding it's wiring is identical to that of the mechanical switches.

Step 8: Connecting Destruction Stops: Makerbot Intent End Michigan

If you are using the most commonly misused remnant stops "Makerbot Organized Mechanical Endstop Kit", IT comes with flyspeck racing circuit board and wiring. It will light up an Light-emitting diode when triggered.


There are 3 wires coming from the remainder stop: Carmine/BLACK/GREEN IMPORTANT: make sure the wires correspond with the image above. If you pick up the connector on the RAMPS room and accidentally put the Ruddy wire on the Signalize (as opposed to +) YOU WILL SMELL SMOKE real fast.

Step 9: Connecting End Stops: Micro Switch

If you forego the fancy Makerbot Switch (don't do it for the price, it's generally many about the sizing of the sensor) and or else go with a micro switch it's my experience wiring is a flake easier. You genuinely only need two wires. solder the wire to the two outside pins of the Micro electric switch and link up them to the -(minus) and s (signal) pin on the ramps.

Since in this configuration the connection is staring you will have to flip the shape in the Marlin software to reverse the bespeak.

You can test the micro switches and their behavior by opening an application equal Pronterface or Octo Print and sending the g-code m119. Information technology will indicate the land of entirely end boodle. A seen in the video beneath.

Step 10: Connecting the Extruder

The Extruder (the hot-last that spits out the plastic) generally has 6 wires connected and maybe more than if you you use auto bed leveling and an additional Hot-end Chilling fan (Unlike the Heat cesspool fan, it cools the parting layer of deposited pliant).

Therein step we'll focus along the Basic wires:

2 Wires for the Heating Magazine (generally thicker wires)

2 Wires for the thermistor

2 wires for the Heat sink fan

The standard wiring apparatus generally means we hook the heat sink cooling fan to the 12V fan connector on the RAMPS 1.4. These fan pins can live launch between the fuses and the X Stepper Driver (see image above). Connected the image the left pin is + so induce sure the red ink wire from the fan connects thereto unrivalled. Oh, and for some reason all wires happening 3D printers appear to come at 1 meter simply the cooling fan wires in general never make. Be prepared to extend them.

In the same image you see the Blue connectors (bottom left). D10 is for the hot end. Polarity does not matter here.

The RAMPS Board has 3 Thermistor hookups (2 extruders, 1 heated bed). The Thermistor conducting wire for the extruder (The white skinny wires) go along T0. Polarity does not matter.

Tone 11: Copulative Heated Bed

Most heated bed you buy will come with wires and thermal resistor but are often not yet connected. The virtually demotic heated get laid is the one seen in the image (the MK 2B by Joseph Prusa, or most likely some knockoff of it).

Since there will be a lot of current lengthways through, hold sure you use proper gauge wiring (12-16 judge should do).

At the seat of the layer you'll generally see either two or three metal connectors to which to solder the power. If your printer is 12V keep abreast the instructions and solder i wire to both 2 and 3 and the second cable to 1. Don't bother with the LED connection, At that place really is no maneuver to those.

The methamphetamine bead headway of the thermal resistor goes right into the tiny hole at the center of the bed (this so it will close up to the material on top (like a field glass plate).

I used Brush-happening Electrical tape to hold over the thermistor in place. It posterior handle up to 204°C which is more than than the bed will get.

The heating system wires get in the RAMPS at D8 and the thermistor is attached to T1 (both polarity doesn't matter).

Step 12: Determination

There you induce it. All the wiring that was gone the Laminated 3D printer. These operating instructions are pretty much the same of any other RAMPS 1.4 installation. There are additive options much As Hotend Chilling buff and Auto Bed Leveling (both of which can cost through with the standard RAMPS 1.4) only I'll save up those for another instructable.

Hope this was useful and if you feel I left something out or royally screwed up (after 5 years the printer hasn't caught enkindle yet, merely who knows) let Pine Tree State know and I'll make changes where warranted.

If you liked this feel out my past instructables or bring down my website at https://core3d.tech

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