Very cool! Very light looking! Fast?
Is it stable enough, with just this narrow center rail?
Video?
_Mark
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Very nice! Thanks for that.
_Mark
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On 20. Mar 2020, at 19:35, Hanski <hanski...@gmail.com> wrote:
Hi!
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On 20. Mar 2020, at 21:02, Bill Ruckman <bil...@gmail.com> wrote:
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Wont vibrations from picking up first part cause second part to jump?
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-Hanski
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Hanski
out of curiosity,
Something like this:
I'm asking because I'm in the process of developing a new feeder
class in OpenPNP that can do what the lever feeder can do and
more. But the condition for using it comfortably are the above two
points (it can be used without vision but that's no fun).
_Mark
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On 21. Mar 2020, at 0.21, ma...@makr.zone wrote:
Hanski
out of curiosity,
- can the camera reach the feeder pick location?
- does it see two sprocket holes (or more)?
Something like this:
<jioomnpkpbnbcgdm.png>
Hi Hanski
I think my new feeder will work with that. It will automatically
"understand" the tape direction based on the sprocket holes
relative to the pick location and the EIA-481 standard and
therefore it will correctly iterate through the two picks.
You can even add a "Multiplier", so you can actuate the levers
multiple times, to serve 4 x 0402 parts or 2 x 0603 for instance.
This can save some time for feeders where the machine motion
required to reach the levers is significant.
This is how vision numbers the picks in setup/calibration:
I have some problems yet to solve, then I will create a Pull
Request.
_Mark
On 22. Mar 2020, at 12.53, ma...@makr.zone wrote:
Hi Hanski
I think my new feeder will work with that. It will automatically "understand" the tape direction based on the sprocket holes relative to the pick location and the EIA-481 standard and therefore it will correctly iterate through the two picks.
You can even add a "Multiplier", so you can actuate the levers multiple times, to serve 4 x 0402 parts or 2 x 0603 for instance. This can save some time for feeders where the machine motion required to reach the levers is significant.
This is how vision numbers the picks in setup/calibration:
<fgjdfbilkiolhmfc.png>
<gcadbfkbnpbkcblc.png>
I have some problems yet to solve, then I will create a Pull Request.
_Mark
Am 21.03.2020 um 10:12 schrieb Hanski:
Hi Mark!In my case the two 0402 exposed parts in the feeder would look like this.
Sorry about the poor picture quality. I can’t post the original debug images. For some reason all pipeline stage image folder pictures are always 0KB in size and can’t be opened. I’ve set the log level to debug or trace but no difference. It does store all pics but all are 0KB size.
-Hanski
<IMG_20200321_110355.jpeg>
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You cannot set the direction manually, but you can set &
capture the two reference sprocket hole locations manually. This
is also useful if vision is not possible, i.e. when only the
nozzle tip can reach the feeder. You can then use the nozzle tip
to capture their locations. Or you can even calculate their
locations from theory (this is no fun but also not as difficult as
it sounds).
_Mark
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On 22. Mar 2020, at 16.05, ma...@makr.zone wrote:
You cannot set the direction manually, but you can set & capture the two reference sprocket hole locations manually. This is also useful if vision is not possible, i.e. when only the nozzle tip can reach the feeder. You can then use the nozzle tip to capture their locations. Or you can even calculate their locations from theory (this is no fun but also not as difficult as it sounds).
<ehhdppnccaplebnk.png>
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> As guys pointed out here before, the exposed parts may jump out of pocket when nozzle hits to the next open pocket..
For my flimsy 3D-printed prototype feeders, it reliably does not
do that when the nozzle tip hits, but it sometimes happens
when the tape is transported plus the cover tape pulled back. The
printed plastic or something is somehow transmitting vibrations
and the parts flip in their pockets. Really a tough nut to crack,
it seems, I tried so many things now and it is getting
frustrating. Guess, there's a reason why most (if not even all)
3D printed feeders out there only handle 0603 or even larger.
But for your sturdy, heavy feeders, if you can already
successfully feed your 0402 tapes without the parts toppling, then
I would be very surprised if the pick is a problem. Those feeders
are specifically made for very fast and hard picks and even if
0402 parts i.e. two parts uncovered at a time were not considered
back then, vibrations are never a good thing, so I'm confident
your tape is flush to the support and nothing is bouncing in
there.
_Mark
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Hi
you don't need to work in the machine.xml, but you need to define the commands in the GUI.
Read this to understand the commands:
https://github.com/openpnp/openpnp/wiki/GcodeDriver%3A-Command-Reference
_Mark
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Hi all!Thanks for all the great minds behind OpenPnP software for making it possible for DIY guys to build home-brew PnP machines!The kind folks at Duet3D sent me a free Duet 2 Wifi board.I replaced the Smoothieboard in my machine with Duet 2 Wifi board to have more quiet stepper drivers (Duet 2 has Trinamic drivers).I've attached my machine.xml to show what commands are needed in OpenPnP GcodeDriver to control Duet 2 board.I also attached my config.g which is located in Duet 2 board SD card. It shows how to configure vacuum pump, vacuum valve, and top camera lights outputs.Pic of my machine:
1. Use the online configurator to create config and homing files for a simple 3D printer with one tool. Then manually add to config.g any configuration commands that you need to set up GPOut ports for vacuum and any other additional devices.
2. Start from Hanski's configuration, and adjust the bed size (M208), maximum speeds (M203) and accelerations (M201) to suit your machine.
Feel free to ask at forum.duet3d.com if you need any help with the configuration and homing files.
Thanks, sorry for the late reaction but I was on holiday.
You both pointed to the parts of the solution which I didn't solve completely.
@dc42
Yes you are (almost) right. I home at the top. The range is set to 154:190. It turned out that the top is 190. Then going down the value decreases.
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