ramps 1.4 lcd touch screen free sample

In RAMPS 1.4 the capacitors and resistors are now surface mount (SMD) components. This provided more space for more passive components, as well as headers. This does add another set of steps to the assembly process, but we stuck with larger sizes to make it fairly painless.

There are multiple boards all based on the RAMPS 1.3/1.4 design with minor variations in form factors and components, for example Prusa, Ultimaker and others. Other incarnations combined the components of the Arduino ATmega and the RAMPS into a single board, some using ATMega128. They may have different power/rating capabilities but the basic structure and electrical behavior is very similar and we describe them as RAMPS compatible, in fact most boards in firmwares like Marlin are treated as derivate of RAMPS.

This section presents the basic steps to wire an assemble RAMPS 1.4 board assuming the more common scenarios. Check the #Assembly section to learn how to assemble your own Ramps 1.4 board.

Some notes on TMC2130: Getting TMC2130 stepper drivers to work on a RAMPS 1.4 board requires modifications to the board. TMC2130 stepper drivers are configure by software using SPI. TMC2130 drivers require the pins from AUX02 and AUX-3 to be available if for example you have an SD Card or and LCD, chances are that you won"t be able to setup the SPI interface for the TMC2130.

A RAMPS 1.4 board using traditional Pololu drivers provide from 1A to 1.2A of current and about 4V to a NEMA motor. The force a motor can produce is mainly measure by its holding torque (For example 3.2 kg-cm, You will also find this in Newtons or oz-in)

A motor will have 4 cables either directly attached or as a ribbon that has a (JST-XH) six pin connector in the motor. The other end of the connector will be a 4 pin header that attaches to the RAMPS board. (From the six pins of a motor only four are used on the connector.)

The RAMPS 1.4 has a 1N4004 diode labeled D1 which allows 12V to feed and power the Arduino Mega 2560 board. This diode is installed in most pre-assemble boards, thus the Arduino board is powered by the Ramps by default.

When the RAMPS is not powered or if the diode is not installed or cut/removed, the Arduino gets its power from USB or a power supply connected to its 2.1mm (center positive) power jack.

The 5V pin in that connector on RAMPS only supplies the 5V to the auxiliary servo connectors. It is designed so that you can jumper it to the VCC pin and use the Arduino"s power supply to supply 5V for extra servos if you are only powered from USB or 5V. Since there is not a lot of extra power from the Arduino"s power supply you can connect it directly to your 5V power supply if you have one. You can also leave this pin not connected if you have no plan to add extra servos.

First, the 1N4004 diode (Diode D1) connects the RAMPS input voltage to the Arduino Mega which has a recommended maximum input voltage of 12 volts. If your board does not have this diode soldered in (or if you cut it), you will need to power the Mega through the USB connector or through a separate 5v line, but this allows a higher RAMPS voltage.

DON"T secure Arduino/RAMPS with conductive screws through both mounting holes. The screw may cut into the positive trace creating a HIGH current short.

On R1+ board the extruder heater is connected to the plug labeled D9. This connector corresponds to the original D10 of RAMPS board and still responds to Arduino"s pin 10.

As of 2012 Marlin has built-in support for RAMPS 1.3 and Ramps 1.4 boards. Marlin"s Firmware up to version 1.1.9 and even version 2 compile with ease using new version of the Arduinos IDE. Compiling a firmware older than 1.1.x require changes to the code or to use an older IDE version.

The SRAMP Firmware is a fork of Marlin v1.1.9 exclusively tailored Mendel/Cartesian printers using 8Bit Microcontrollers. The firmware sports a new GCODE parser and aims to make it easier hobby builders to add features (LCD, SD, etc).

Working preconfigured Sprinter firmware can be downloaded here: File:UltiMachineRAMPS1-4Sprinter.zip. Mechanical is in the folder ending with ME, optical endstop firmware is in the folder ending in OE.

A BOM for sourcing the RAMPS components from Mouser is also available in this google spreadsheet (This list is incomplete and has missing or incorrect quantities.)

Solder 1 1x6, 6 1x4, and 7 2x3 pin headers on top of the board. The long post should be standing up to take a connector. Solder one leg on each one to tack them into place. Then re-heat the joint and push on the component until it is perfectly situated. Then you"ll want to solder the rest of the leads. You will get burnt if you touch the other side of the pin you are soldering.

D1 should only be installed if the 5A rail is powered by 12V. It can be omitted and the Arduino will be powered from USB. You will want D1 installed if you add components to print without a PC. To reiterate, D1 MUST be omitted if you are powering the 5A rail by more than 12V, or the power is not absolutely clean, otherwise you may damage your ramps.

Since the fuses are the tallest parts, it is simpler and more convenient to solder them last. From this point on, solder the rest of the RAMPS in order of bottom pins, reset switch, terminals, mosfets and then fuses.

As there are (by 2019) many different producers of the RAMPS 1.4 board, some who have made their own changes to the design files, thus some boards have some close to critical issues. See examples below.

A "thermals" design flaw has been noted in the RAMPS 1.4 Eagle CAD files. This has been confirmed by visual inspection of production boards, which consistently shows only between two and three (almost never four) thermal-isolating traces per side of the PCB, to power-carrying pins, of under a 0.5 amp carrying-capacity per trace, assuming a 1oz copper thickness.

This image is also in error (it isn"t: it"s a photograph of an existing production RAMPS 1.4 board), the left two unpopulated pins on the image are for the always on fan and use very little current. So are not an issue (actually it is)

The problem may be fixed in the Eagle CAD files - for a future version of RAMPS only - by disabling "thermals" on the GND, +12V and the +12V2 Copper pour. However on existing (mass-produced) RAMPS 1.4 boards, estimating the total widths (including all thermals from all tracks on both sides of the PCB) checking with an online copper width calculator and adding up the total current, assuming a 1oz copper PCB the maximum safe current on the fuses (giving only a 10C rise in temperature of the thermal-isolation tracks) is only around 6 (six) amps and in other areas the maximum safe current (assuming the same 10C rise in temperature) is around 8 (eight) amps.

This problem may potentially be fixed on existing RAMPS 1.4 boards by augmenting the power traces with suitably-thick insulated wires with sufficient current-carrying capacity, soldering them to all the relevant pins.

Minimum total parallel trace with measured on the bed power rail was about 80mil, which would equate to a 4 amp safe limit using the above considerations. Board is marked with "www.bigtee-tech.com" where the "UltiMachine" and "reprap.org/wiki/RAMPS_1.4" markings are in the original 1.4 design.

Note the decreased isolation of the copper pours. Slikscren has the "reprap.org/wiki/RAMPS_1.4" marking but not the "UltiMachine" found on the original design.

On RAMPS/Arduino Mega the UART level are 5V but the BT module supports only 3.3V input. Therefore the TxD level has to be divided by resistor. This passive solution is fast enough for 115kBaud. Overall only 4 wires have to be soldered.

This display board is intended to provide an easy and simple solution to interact with a 3D printer. Given that many of the 3D printer"s mainboards are based on the RAMPS design this display board is supported by many other mainboards.

When using a RAMPS board the Full Graphic Smart Controller is simple to connect using the "smart adapter" which connects directly to an Arduino Mega 2560.

Depending on the vendor you may find boards using an ST7920 IC Driver or a ST7565 IC Driver. Boards using a DOG-M128 Display use a ST7565 IC Driver. The more common and generic boards use some flavor of a 12864 LCD with the ST7920, this is the case with most board you find in online stores.

This display board is supported by the most popular 3D Printer firmwares, yet differences in the LCD Drivers used and others may dictate the level of support in a given 3D printer mainboard and firmware combination. See connection for more details.

Depending on the vendor you may find boards using an ST7920 IC Driver, a ST7565 IC Driver, or other. Boards using a DOG-M128 Display use a ST7565 IC Driver. The more common and generic boards use some flavor of a 12864 LCD with the ST7920, this is the case with most boards you find in online stores.

When used with a RAMPS board the "Smart Adapter" provides an easy connection with the RAMPS. The following figure shows the pinout mapping to an Arduino Mega 2560:

The basic requirement to add support in the Marlin Firmware is to enable the REPRAP_DISCOUNT_FULL_GRAPHIC_SMART_CONTROLLER in the "Configuration.h”. For more details check Marlin"s page on how to configure the firmware, see the LCD section.

The firmware also offers other define constants for some popular variants of the "RepRapDiscount Full Graphic Smart Controller", that may use another driver or has a different PIN/layout or other requirement. Look at options under the the "LCD / Controller Selection" sections in the "Configuration.h” file.

To enable the correct LCD in the firmware it is important that you identify if your version of a "Smart Controller" is indeed using the ST7920 driver or if it has a different pin requirement. If that is your situation, then you need to see if the firmware already has support for your version of "Smart Controller" and select it accordingly.

If you have an 8bit board it"s likely that it is based on RAMPS, in which case it uses the "pins_RAMPS.h" (or other pins_RAMPxxx.h) as the base of the PIN configuration for your board. You can tell if your board is using a RAMPS as a base configuration by looking for a line similar to #include "pins_RAMPS.h" near the top. In addition to checking the "pins_XXXX.h" file corresponding to your mainboard, its a good idea to check the base file to see if your smart controller is supported.

Another important aspect of compatibility is dictated by your printers mainboard it self. If you board has a dedicated LCD connector you have to check at minimum two things:

For example a connection that shares the SPI with the an ST7920 LCD will not work and will produce garbage on the LCD. (The ST7920 can not share an SPI/Serial interface).

This panel and RAMPS Gadgets3D shield makes it possible to print G-Code files from an SD card and display information about the current print job. The controller wheel allows you to change the feedrate, navigate menus, alter parameters, and activate commands.

The main panel with LCD is based on bkubicek Panel design. Gadgets 3D uses 10-pin plugs and ribbon cables to make connection fast and easy. The unit usually comes with two pairs of ribbon cables, one set long and the other set short.

The BT7272A RAMPS 1.4 "Plus", made by (now apparently defunct) 3DYMY (http://3dymy.com), integrates the Mega 2560 and RAMPS 1.4 electronics into a single board solution.

Unfortunately, with 3DYMY apparently being out of business, documentation is somewhat hard to find. At the time of this writing (2019/8/21), Marlin 1.1.x fixes does support the board... mostly. There are a few pin changes in relation to the LCD display that need to be redefined, and the available pinouts are written with earlier versions of Marlin in mind, so some names have changed.

Also to note, the available documentation has been shown to be "minorly" incorrect. Specifically, on the LCD2004 pin list, at least one LCD board mounted to a BT7262A controller has the BTN_EN1 and BTN_EN2 lines reversed (pins 25 and 29). Always verify the hardware on hand for proper wiring and pin definitions!

The BT7272A RAMPS 1.4 "Plus", made by (now apparently defunct) 3DYMY (http://3dymy.com), integrates the Mega 2560 and RAMPS 1.4 electronics into a single board solution.

Unfortunately, with 3DYMY apparently being out of business, documentation is somewhat hard to find. At the time of this writing (2019/8/21), Marlin 1.1.x fixes does support the board... mostly. There are a few pin changes in relation to the LCD display that need to be redefined, and the available pinouts are written with earlier versions of Marlin in mind, so some names have changed.

Also to note, the available documentation has been shown to be "minorly" incorrect. Specifically, on the LCD2004 pin list, at least one LCD board mounted to a BT7262A controller has the BTN_EN1 and BTN_EN2 lines reversed (pins 25 and 29). Always verify the hardware on hand for proper wiring and pin definitions!

This panel and RAMPS Gadgets3D shield makes it possible to print G-Code files from an SD card and display information about the current print job. The controller wheel allows you to change the feedrate, navigate menus, alter parameters, and activate commands.

The main panel with LCD is based on bkubicek Panel design. Gadgets 3D uses 10-pin plugs and ribbon cables to make connection fast and easy. The unit usually comes with two pairs of ribbon cables, one set long and the other set short.

Marlin supports a wide variety of 3D printers, including all RAMPS variants, and is adaptable to virtually any Arduino/Genuino-based electronics through pin-mapping - associating pins with their functions. With the addition of a hardware abstraction layer, Marlin 1.2 will address an even wider variety of boards.

pins_BOARDNAME.h Each of these files contains the pin definitions for a single board. Some pins files form the basis for other pins files, most notably pins_RAMPS.h.

To build Marlin for a specific board, set the MOTHERBOARD option in Configuration.h. This example selects a RAMPS 1.4 board with the 12V power MOSFET connectors arranged in Extruder, Fan, Bed (EFB) order:

Since version 1.1.4, Marlin also uses Arduino pin mapping for Teensy++, Sanguino, and other AT90USB-based processors, so we can still use the documented digital pin numbers even in the Teenyduino build environment. Previous versions of Marlin provided an option to use either Teensyduino or Arduino mapping, depending on the what the active pins file supported.

If you’re developing a custom Arduino-based board, try to use standard RAMPS 1.4 pinouts as much as possible, or choose a pin-mapping similar to another board Marlin supports. The more a new board resembles an existing board, the easier it will be to integrate.

So basically you just replaced everything except for the LCD (the LCD testing is described a little further). If the LCD is not working then, this could imply that either your LCD is broken, or one of the new parts is not functioning as expected, or you have not connected things correctly.

Are you sure the firmware flash went okay? You could test the Arduino Mega 2560 by connecting it over USB to e.g. Pronterface, you do not need the LCD for testing the Arduino Mega and the RAMPS.

The LCD could be tested separately by creating a sketch in Arduino IDE and connect the correct pins of the LCD cable to some pins of an Arduino device, e.g. load the the U8Glib example sketch "GraphicsTest" and add the following constructor:

Here I provide a basic sketch to demonstrate the process of writing custom firmware for the MEGA/RAMPS hardware platform. I wanted to keep it simple, but also demonstrate some of the capabilities of the hardware. The code creates a simple thermometer resembling an old retro bi-metal spring dial thermometer. The hardware is, of course, overkill for this application, but it is a good starting point for understanding the capabilities of this platform.

The image shows the hardware setup. The RAMPS board is plugged into an Arduino MEGA not shown in the Fritzing image. (Note that the + and - for the servo power bus are mistakenly switched in the Fritzing RAMPS image.)

The sketch reads ambient temperature using the NTC (negative temperature coefficient) thermistor, commonly used for 3D printer heat bed temperature measurement, connected to the TEMP_0_PIN pin on the RAMPS. Based on the temperature reading, the code will control the position of a Mini servo connected to SERVO0 on the RAMPS. Note that you may have to install a jumper on the RAMPS board between VCC and 5V (the jumper pins near the reset button) to supply power to the servo.

Basically we are saying that the thermistor has a resistance of 100kOhm at 25 deg C (298 deg Kelvin) and changes with temperature according to a beta parameter of 3950. You may have to adjust these for your particular thermistor. Read this for a deeper explanation. The value of R1 = 4700 Ohm is set by the bias resistor on the RAMPS board (you might want to check this on your board).