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. (Note that the + and - for the servo power bus are mistakenly switched in the Fritzing RAMPS image.) The RAMPS board is plugged into an Arduino MEGA not shown in the Fritzing image. You will need the following additional hardware: The hardware is, of course, overkill for this application, but it is a good starting point for understanding the capabilities of this platform. The code creates a simple thermometer resembling an old retro bi-metal spring dial thermometer. I wanted to keep it simple, but also demonstrate some of the capabilities of the hardware. Here I provide a basic sketch to demonstrate the process of writing custom firmware for the MEGA/RAMPS hardware platform. There are also lots of nice example projects that come with the IDE. If you have not used it before, you might find the Getting Started guide helpful. You can download the IDE from the Arduino website here. We will use the Arduino IDE to code our firmware. (I just happened to have these components available in my parts bin.) I will post other Instructables that use more of the features of the RAMPS board in the future. Below I provide several example applications for the MEGA/RAMPS platform using a thermistor temperature sensor, servo, LCD display and click encoder. This instructable describes the basics of writing firmware for the Mega/RAMPS hardware platform that you can then adapt for your own amazing project. For example, the thermister inputs could equally be used for other types of sensors and with a little care, the heater/fan outputs could be used to power e.g., DC motors, solenoids or other devices. Also, there is (almost) nothing stopping us from using the RAMPS inputs and outputs for other purposes. However, there is nothing stopping us from taking advantage of this powerful hardware platform for other uses by running different firmware. The MEGA/RAMPS hardware combination is commonly controlled using open source MARLIN firmware to provide all necessary capabilities for 3D printers. Just search for 'RAMPS 1.4 kit.' (Note: newer versions of RAMPS may be available when you read this instructable.) 3 high current MOSFET driven heater/fan outputsīest of all, it is relatively inexpensive to purchase a kit containing an Arduino Mega, RAMPS 1.4, LCD display, stepper motor drivers, and cables.The RAMPS 1.4 shield takes advantage of these MEGA capabilities to control 3D printers. The Arduino Mega 2560 R3, based on the ATmega2560 micro-controller, is a powerful MCU board with 54 digital I/O pins, 16 analog inputs, 256K flash memory, numerous serial comm options, and 6 timer/counters that can be used to perform tasks at precise intervals outside the main loop using interrupt service routines (ISRs). The Arduino Mega and Ramps Shield combination is a popular hardware platform for controlling FFF 3D printers. The other thing, I’m a software engineer and living here in Germany near by Stuttgart… I’m familiar with Arduino programming and a little bit with C# and. Now I’m struggling, because I think using a Mega2560 with Ramps 1.4 will be a little bit of overkill compared to the Arduino Uno, if you don’t use the graphical interface and advanced features of the Ramps 1.4… So I take a look on the CNC shield, I have in my lab, but I guess Estlcam is not compatible to use the CNC shield, which is GRBL compatible, without rewiring…Īnyway, I think I’ll go further with Estlcam, but I’m confused now… Shall I wait, until the Mega2560/Ramps 1.4 implementation gets stable and have at least all of the functions, the Uno provides or shall I take the lemon and use the Uno with an rewired CNC shield first and move on to the Ramps solution later do you have a time frame, when you think, this Ramps solution will provide the same functionality compared to the Uno version? So I had a look on Estlcam, which looks much better for CNC control. Hm, grate work, but now I’m a little bit confused… I have finished the mechanics of my MPCNC and going to wire the steppers and end switches… I’ve had a look at the combination Marlin/Repetier-Host and I think, without having some additional plugins for CNC, like Z-probing, the capability of using a touch plate and zeroing of the axis, etc., this combination seem to be not the best solution.
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