There is enough space in the bottom of the Ultimaker Original to integrate a power supply able to drive a heated bed. I have also found some room for a Raspberry Pi running OctoPrint.
Now, everything is integrated in my UMO, no more external boxes and cables.
This gallery contains 2 photos.
This mounting bracket is designed for Logitech C525 webcam. Should works also for other webcam of the C500 series. Pressure for the webcam attachment is a little bit too weak. May need some double face tape to strength up the … Continue reading
The wrapper has been updated to Gmoccapy 1.1.4 currently available in LinuxCNC 2.6 pre release.
JOG-WHILE-PAUSED feature has been disabled because lack of time to adapt to new Gmoccapy.
New package available here: http://blog.f1oat.org/linuxcnc/
Here is a new test showing the resolution we can achieve with the HD5000 when the workpiece is at 25mm distance. Metric units.
A very useful new feature added to my LInuxCNC config: JOG-WHILE-PAUSED based on M60 remap and Gmoccapy modifications.
I have designed a sharedvar class to exchange data between Gmoccapy and the Python code called by REMAP.
The native pause buttons is fully handled.
Everything looks like a standard M0 behavior, except you have access to all functions as for manual mode during pause.
There is an automatic machine state save/restore included in my modified M60.
The HD5000 is fully integrated in a Gmoccapy panel.
I have added widgets for focus/zoom control. The zoom feature is done with “util.crop” camunit module.
See http://wiki.linuxcnc.org/cgi-bin/wiki.pl?Adding_Digital_Zoom_To_Camview-Emc for full description.
Here is an old project now almost finished: a stepper motor based laser sweeping mechanism to be used with DAVID-Laserscanner. The design has been done with ViaCAD 2D/3D. CNC G-Code file generated with CamBam.
The stepper motor is used with a planetary gear box of 1:100 ratio. This gives a resolution of 0.018°.
The electronics is based on:
The different parts before machining the box:
The mechanical elements has been machined with a CNC-6040 router.
Next step is the machining of the Laser support axis.
Full project description here: http://blog.f1oat.org/david-laserscanner-laser-sweeping-mechanism/
The webcam is mounted along the Z axis. It moves on X and Y, but not Z.
My first idea was to install the webcam on the spindle mount so that it can be moved down to a short distance from the workpiece (too have a large image). However, as the spindle motor height can be adjusted in the mount, it was difficult to find a safe and suitable position for the webcam. So, I went back to the Z axis solution.
Next step is the vertical alignment of the webcam with Z axis. I used piece of paper (with some writings) attached to a arm mounted in the spindle. Thanks to this configuration, I can move the target up and down. Then I tuned adjustments screws of the webcam so that the crosshair center remain on the same point of the target for any Z position. When this is achieved, the webcam axis is perfectly vertical.
Here, the target at bottom position as seen by the webcam
And the same target at top position. No noticeable drift => the alignment is ok.
Next step is the measurement of the offset between the webcam crosshair and the spindle.
I have used a small V-Cutter tool to make a very small hole in a AU4G workpiece. The X/Y position is recorded. The hole as been filled with black color thanks to a soft pencil.
Then I have moved the X/Y axis to get this hole at the center of the crosshair. The delta with the recorded position is the offset to be configured in LinuxCNC.
The optical resolution of the webcam at this distance is about 0.1mm per point. I have tried few pointings and achieved an accuracy better than 0.05mm. Surprisingly, that is better than pixel resolution. I think that is possible because we can see when the hole stands between 2 pixels.
This was the first run of my new CNC-6040.Results are quite good.
The mounting bracket is done in AU4G. The Webcam box is done in POM-C plastic.
