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Haydn Huntley

About

I'm having fun designing and improving 3D printers.<br><br>By day, I work on the PanSTARRS telescope operations team.

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Updated E3D Locking Wedge over 5 years ago
Updated Kossel Plus Magnetic Effector almost 6 years ago
Updated Kossel Plus Magnetic Effector almost 6 years ago
Updated Kossel Plus Magnetic Effector almost 6 years ago
Commented on Kossel Plus FSR Holders about 6 years ago
Hi DaveyHi, Not all micro switches are of equal quality. For a z-min probe, it is a plus to have a micro switch which is good quality, has a soft spring, and does NOT have a spring arm. I got some excellent ones from TriDPrinting.com. You don't want to wire the FSR's directly to your printer controller. Instead use the Trinket Fsr.ino file to program your Trinket, and use TrinketWiring.png as your wiring diagram. Note: I normaly wire 5v from the printer controller to +USB on the Trinket (and not to BAT+). You could wire BAT+ to 12v. On an 32-bit printer controller, usually there is a jumper to select for using 5v (and not 3.3v) for the endstop switches and z-min probe. Also, note that I use a 5v Trinket, and not a 3.3v one.
Commented on Kossel Plus FSR Holders about 6 years ago
I've seen people design FSR into the effector, however you don't need to worry about keeping them independent of bed weight -- the software on the Trinket automatically adapts to the bed weight. I suspect a problem with locating them in the effector is that the effector goes through a lot of acceleration changes, which might trigger it. Believe it or not, but a well designed micro-switch-based z-min probe can actually work quite well.
Commented on Kossel Plus FSR Holders about 6 years ago
FSR's don't like high temperatures, but with the setup I'm using, there is a plastic "button" and several mm of glass insulating the FSR's from the heat. I haven't tried printing ABS with this setup yet. It also probably helps that typically I calibrate the printer once, without heating the bed (using RC's Marlin's auto calibration "G30 A Dnnn.nn" command, and the printer stays calibrated until the next time I change some of the parts.
Published E3D Locking Wedge about 6 years ago
Published Kossel Clear Stiffer Outside Carriages over 6 years ago
Commented on Magnetic Ball Joint Rod Ends over 6 years ago
<p>I use the two 3/8" ball bearings in my jig -- they're more convenient than the ball studs for that purpose.</p>
Published Kossel Plus FSR Holders over 6 years ago