#ARDUINO MEGA 2560 PINOUT REPRAP UPGRADE#

It can be tricky to get the encoder working as planned.įor Marlin you can try different values for the encoder steps and clicks.įor your own projects based on the example codes you do the same. Too much and all is black, too little and it looks like only the backlight is on. This potentiometer is very sensitive and there is only a little 'sweet spot' where you get something to see on the display.

Works fine but is a pain to do and might only be worth it if you would prefer to seperate the display as otherwise you need to revert those changes.

With this the contrast can be adjusted independent from everything.īut before you try here make sure all is connected correctly and that you have 5V!Ī) Using wooden skewer and trying to use a corner of the dial for the adjustment by pushing - not very easy, not very accurate and very easy to break the poteniometer.ī) Unsoldering the display from the board and using ribbon cable so you can adjust the level on the go. There is another potentiometer directly on the back of the actual display. There is a potentiometer on the controller, on some models it is to adjust the contrast level of the display, on most it is just useless, so try if turning changes the contrast.

Without that the 5V supply for the display controller will only reach 3.2-3.6V instead of the 5V required. In my case the modified RAMPS shield no longer suppied the voltage for the Arduino and I had to add a voltage regulator to power the Arduino independent from the Ramps shield. The display does not seem to work.Ĭheck if you have 5V on all Arduino 5V pins! That was only to make sure you have included what you need for this controller.įor Marlin firmwares you only need to uncomment the DEFINE for this controller in the configuration.h file.

#ARDUINO MEGA 2560 PINOUT REPRAP UPGRADE#

I assume you either have a 3D printer you want to upgrade or that your project reqiures a decent display.Īs stated in every example sketch for these displays you will need the U8GLIB library for your Arduino ISP.Ĭode wise you should be covered by studying the documentation for these libraries. Step 2: Possible Fixes That Worked for Me This can have several causes including the missing 5V supply for the controller. The SD will be recognised when inserted but the menu or sketch will claim there is no SD or that it is empty. The other case only affects about 50% of the users and is cause by either the wrong contrast level of a missing 5V supply to the controller.īut by far the worst problem seems to affect users with a Ramps shield and using this controller. One of these nothings is related to a faulty connection, if your backlight is off and there is no beep when you press the encoder then switch the two ribbon cables ) LOL Nothing in the term of the display having no usable contrast so it appears either off or with a blank screen and the backlicht on. You either have to find a supplier that sticks close to the original Reprap design or you will face some more or less noticable diffences.įor most users the frustration starts with nothing. One of the worst problems is missing documentation. There is also a 'naked' version available on Ebay that only offers a pin header for soldering but no cables at all. Other variation include a direct connection for the Arduino pins in the form of a complete shield or just short cables with pin headers.

In my case it came with two ribbon cables and a bracket for the RAMPS shield. There is also a little buzzer that can be used for acustic feedback on selections or as a warning device.Ĭonnection depends on the model and type you select. Overall build quality on mine was very good with nothing to complain although some people noticed bad soldering points in some areas. The controller is quite well designed for the purpose of providing a big display, a fully featured SD reader (SDHC of 32GB are no problem) and a little encoder knob to go through your menus and settings.

Arduino mega 2560 pinout reprap