This thing allows to mount a Logitech C270 USB camera to your Hephestos 2's Y-carriage, to have it move with the bed during printing and allow a view of the ongoing print undisturbed by motion. Naturally I use this with OctoPrint ;)
This thing mounts into two existing M4 holes on the front of the Hephestos 2's Y-carriage. The position of camera is designed such that the lens is located on the center line of the bed. The camera's front is located just outside the movement area of the print head and thus should not cause any problems.
Note: I so far have not discovered any artifacts in my prints caused by the added weight in 4 months of printing with this setup, but YMMV. Also, for high prints the model might run out of the visible angle - I'm still looking into somehow mounting a wide angle attachment to the camera's lens or maybe mount it vertically to compensate for that. If you are concerned about any of these downsides, this might not be the best solution for you.
In order to build this you'll need to print:
- 1 x cameramount_bracket_left.stl
- 1 x cameramount_bracket_right.stl (with support from platform)
- 1 x cameramount_arm_c270.stl (with support for the two hinge components)
- 1 x cameramount_plate.stl (with support as above, should fit on your Hephestos 2's bed)
Additionally you'll need:
- 2 x M4x10mm screws (e.g. DIN 912)
- 2 x M3x16mm screws (e.g. DIN 912)
- 1 x M3x30mm screw (e.g. DIN 912)
- 3 x M3 hex nut (e.g. DIN 934)
If you need to make any adjustments (e.g. to support another camera model), you can find the Fusion360 files here.
The right bracket and the camera arm need to be printed with support. The left bracket can be printed without.
I printed all parts in orange PLA, with two perimeters.
See the exploded view for assembly instructions. Attempt at a textual description follows ;)
- Unmount the print bed assembly of your Hephestos 2 from the Y carriage. In the front corners of the carriage/bed holder there are two M4 tapped screw holes, unused. Using the two M4x10mm screws, mount the left and right bracket into the left and right of these holes respectively. The bracket halves should wrap around the front of the carriage and come together in the front center. Make sure the right bracket wraps over the lip of the carriage with the included hook.
- Using the two M3x16mm screws and M3 nuts, mount the camera arm on the center joint and secure the joint.
- Detach the stock clip from the Logitech C270 web cam. You only have to remove the hinge, it's a firmly reversible process.
- Using the M3x30mm screw and another M3 nut, mount the camera to the arm.
- Make sure the cord of the camera can't catch on the bed in any way. I used some spiral wire tubing I had on hand to force it into a safe bend and secured the other end onto the front frame of the printer with some velcro.