Better Feeder Tray and PCB Holder for Lumen PNP

I designed a better tray feeder and PCB holder for the Lumen PnP kit. These 3D printed parts make it easy to swap out your circuit boards and trays of parts so you can use OpenPNP to populate your PCBs.
It makes use of 0.75" binder clips to hold the feeder trays and PCB holders in place (affiliate link):
amzn.to/3I95Bgk
Download the 3D parts here:
www.prusaprint...
Sign up for newsletter: curlytalegames....
Follow me on Twitter: / curlytalegames
Follow me on Facebook: / curlytalegames
Merch: teespring.com/...
Spellbound by Kevin MacLeod
Link: incompetech.fi...
License: filmmusic.io/s...

[@grantweepie5623]

Nice design. I just ordered my kit today!

[@curlytalegames2609]

Thanks! It takes a few days to print all the parts to assemble it. I'd recommend joining the LumenPNP Discord channel, it's handy if you run into issues while putting the kit together and configuring OpenPNP: discordapp.com/invite/TCwy6De

[@muhammadarsalan3412]

Can you make video while it populating the board

[@curlytalegames2609]

I've been making a bunch of modifications to my Lumen but once I'm done I totally will :)

[@bradcb212]

Thanks for making these. I bought the kit a week or two ago. Gonna be a little while longer before they're ready to ship. It's exciting the possibility of an affordable way to automate SMD placement. I just finished a toaster oven to reflow conversion and did my first stencil job with tape and tweezer placement. I've done hand soldering and hot air rework stuff for years. It went mostly well but I had to rework the 100 pin TQFP package, as it just got too much solder. Then the new part had a few open connections, I discovered trying to figure out the weird behavior of the LCD. Learned I need a proper desktop stenciling machine and that tweezers are fine for passives but a PITA for larger parts. Still, it's opened up so many possibilities with chips I would have difficulty hand soldering.

[@curlytalegames2609]

You're welcome! I need to learn FreeCAD and get these added to the LumenPNP Github repo. Not to too my own horn but I like my design much more than the original magnet PCB holders. I know Stephen just released a new video with a different design, but I still feel like my design is easier to change while still having a strong hold.

[@viveksharma9564]

Would you mind sharing your toaster conversion design and overall experience with that. I’m thinking of either doing toaster conversion or going with some cheap Chinese stuff for baking.

[@bradcb212]

@@viveksharma9564 I built the Whizoo kit. You buy the oven and pretty much everything else comes in the kit. I've only built two revisions of one board but the reflow oven handled leaded and lead-free reflow fine. The PCBAs came out with nice shiny fillets just like a professionally assembled board without burning components. Only issue I've ran into has been too much paste on tight pitch QFPs causing shorts. But that's more an issue of my paste stencil process.

[@ProtonOne11]

I like the design idea of using the binder clips, but now that i expanded the build area with 2 more staging plates, i can't clip stuff on anymore, so i need to go back to using a screw in place design... I'm actually on the fence to exchange all the screws that are used to mount the electronics and stuff on the bottom of the staging plate with countersunk screws, so there is no more screwhead interference with part trays and pcb holders on top of the staging plate. The other idea i had is to just move all that electronics and pneumatics somewhere else on the machine where it's not in the way, for example on the left side of the machine, outside of the bottom aluminium extrusion. But i guess making some countersinks with the drill and change the scews is the quicker "fix" for now. Looking forward to follow you along on your journey with the Opulo. 😃

[@JacobChrist]

Your part with no supports that sags. Why not just put a foot in the center of the sag at the base level that ramps up at 45 degrees to make the sag intentional.

[@jon_raymond]

Great video! Looking forward to future videos of your PnP journey.

[@curlytalegames2609]

Thanks Jon! I'm still getting my bearings with OpenPNP. I'll definitely post some more videos as I progress along :)