Hey guys, Just wanted to share a recent mod that's been in development for some time now for kicks and gigs. It uses an arduino compatible LED strip driver to add functionality to your printers LED's. I installed this on my beater R1 so try and ignore the creepy/horrendous paintjob! I basically incorporated the library for an LED driver into the firmware and create custom command "codes" to control it. I also wrote some temperature variables in for some fun as well as adding another menu to the Smart LCD controller for easy accessibility when away from computer. But the original version of the code this was built on was written by a couple guys and I in August 2014. You have the option of addressing either the LED's in the case or the LED's on the extruder carriage or both. You can choose between 7 preset colors or a custom color choice of your own (over 1,000,000 possible color combinations) Another feature is the BREATHE mode. The original code for this function was written by Ted back when we were first working on the original code. It fades the LED's in and out simulating "breathing". The breathing rate increases when the printer begins heating. It really brings the printer to life in my opinion. Once the printer is heated up and printing, the breathing stops and the LED's are put in a solid state. I also added some blinking functions and assigned them "codes". They can be placed in the start gcode or end gcode like any other code. I like using them for signaling errors or completed tasks (ie homing, heating, printing, resuming, stopping, starting, pretty much any function you can think of). I achieved this with only $15 worth of extra components. I will put up a step by step tutorial soon including the firmware modifications needed to make this happen on your own ROBO. Sorry I could have gone more in depth with this post but I don't have much extra time on my hands. So this is just the preview for now Let me know what you think!