Hangprinter kinematics is now supported in release 1.20 beta 11 of RepRapFirmware for the Duet series. See [duet3d.com] for the documentation. Test it with care (e.g. use reduced motor currents), because it hasn't been run on a Hangprinter yet. The auto calibration probably needs more work to get it working well.
Edited 1 time(s). Last edit at 11/30/2017 06:30AM by dc42. Delta printer calibration calculator, mini IR Z probe, and colour touch screen control panel: [escher3d.com]
Ya for the slicer what is your average default printing speed and xyz movement speeds so I have a place to start we started the build today I ordered the carbon fiber since it is a huge weight savings.
Edited 1 time(s). Last edit at 12/02/2017 02:55PM by delloman.
Ok, nice. Between 30 and 60 mm/s for print moves and between 100 and 200 for travel moves. For thicker layer heights (0.8 - 1.0 mm) I use slow print moves since the maximum rate at which we can melt plastic in the Volcano is around 140 g/h.
we started the assembly process today here is a pic we almost have all the hardware installed we need some better photos. we dont want to wire incorrectly. any chance of a wiring diagram? [photos.app.goo.gl]
Look through version 2 forum thread and dev blog for pics and wiring. All wiring except the i2c bus, which requires 5V<->3V3 conversion is done the same way as on any other RepRap. Mechaduino D0 is dir, D1 is step if I remember correctly.
It looks like you use flat 623 bearings in the rollers instead of v-grooved ones.
I suspect that your ABC lines will slip off, but it would interesting to see if you want to test this assumption.
I see that you use Mechaduinos.
Be sure to read the Machaduino manual and the firmware README for usage instructions.
In particular, calibrate all the Mechaduinos and give them different i2c-addresses when you flash them.
Still working on the auto-calibration.
Details on the blog.
Manual calibration follows the same principles as before.
The v3 mover is more workable than the v2 was, making the measurement process less painful (but still hard).
The web-calculator is not in use anymore, I will remove it soon.
I use ca 5-10 kg on the anchors, depending on the friction between the specific floor and anchor surfaces.
Thanks for asking about the weight, it reminded me of something important.
Prepare for the event that somebody trips in the lines by introducing a known weak link.
If you use Mechaduinos or other closed-loop servos, the ABC-anchors must be free to move towards the origin. Use friction-based ABC-anchors with a moderate amount of weight on them.
The movement system should not be strong enough cut a line into somebody's throat. Adjust motor currents and/or anchor weights until this requirement is fulfilled.
Secure your winch very firmly in the ceiling.
The consequences of not preparing a weak link could be:
The whole winch unit could fall down and hit somebody in the head.
Throats or other body parts could get entangeled and damaged by the lines.
Well we have the steppers spinning now the hard part calibration and anchors. sadly Tropic Labs shorted me a magnet so I am waiting for delivery on a replacement. I found from the company that supply's the ones to Tropic Labs I still have not received a reply from them about it. Otherwise they are really cool