good afternoon! I have been running my setup for a few weeks now and was hoping to reach out and see if anyone had any input on a few things. Firstly my color changes are working for the most part but I am still getting some very fine stringing and was wondering what values people tweaked to in the gcode to reduce the stringing ? I keep coming back to, it would be nice to have a filament sensor integrated into this system so if it jams or doesn't load the next color properly it will pause. In theory it would be pretty simple to have a sensor with an off-delay circuit set to the time it takes to unload and load the next color . has anyone tried this or something similar?
The brass compression fittings have been a bit of a pain for me the tubes keep popping out and i have to take it apart and fix it each time. is there something i am missing?
The stringing can be mitigated with proper tip shaping... see our FAQ #10 for details on it. A newer options is to implement a filament cutter, like the 3DClippy I designed. As for the filament sensor... you'd need to use something like Octoprint or a customized firmware to implement a solution like that. Our goal was to eliminate the need for a customized firmware and do all the work in pure gcode. However, with that said, you can easily build your own custom solution using our hardware... it's just a Atmega 328P and there is an ISCP header, so you can also reprogram it... but like I said, it's a lot harder to implement as you'll need code that coordinates both the printer's motion and the 3DChameleon's motions. Not impossible, but not a solution we wanted to make, either, as that would make it impossible to be adaptable to every machine. Really, the 3DClippy appears to be the best choice at this point. Here's an example of it installed on an Ender 3 V2: https://www.youtube.com/watch?v=kpYtGQn47hU And here's it running: https://www.youtube.com/watch?v=BBzq4Lhg4Jc Bill
you could probably attach the filament sensor to the end of the Y adapter with a mod. Y adapter > filament sensor > extruder