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Development Status
This page is a regularly updated account of the current tasks being worked on in the LumenPnP project.
If you'd like to contribute, please check out our Contributing page, outstanding Github Issues, and hop into the community Discord Server.
Lots of development is happening for the next major release of the LumenPnP (likely a v4.0.0 release). The main priority for this version is Design for Manufacturability (DFM) and EMI/EMC.
All development for this next version is happening in the rev05-mobo branch.
The LumenPnP motherboard is getting an update. REV05 of the board is in progress, and we're currently spinning up the second beta of the design, getting Marlin compiled, and starting to tweak settings for the myriad of changes this new version introduces (XY limit switches, dual Y motors, integrated stepper drivers). As of 240422, Marlin has been successfully compiled for the machine, but still needs lots of edits to be functional for this version of the controller.
All testing for this version of the motherboard is gated behind the arrival of cables to the Opulo office.
The frame is getting a couple new features:
- electronics and pneumatics in a separate control box, mounted to the left side of the machine
- separate X and Y drag chains
- better cable management at the head
- almost completely empty underside of the staging plate
We're starting to look into a new version of the feeder motherboard with a focus on efficiency and EMI/EMC. Still very early in the process, just beginning to think about what a new version would look like. @G-Pereira is looking into fixing a whine with the buck converter, general ESD protection, and EMC/EMI considerations.
A new version of the spool arm is in development that more securely holds the spools in place. There are also a handful of tweaks to the main frame print that are in progress, reducing friction in the tape path and helping with printability.
@sphawes is also testing a new version of the worm gear in the feeder that greatly reduces the likelihood of the film being caught in the peel gear frame.
A patch to the packetization method for Photon is being tested. This patch, once merged, will vastly reduce the likelihood of a feeder dropping connection. This patch has just been successfully compiled for Marlin and Photon, and will be rolled out for full testing on the Opulo line.
There is also a bit of work going into improving feeds for very thick tape, as sometimes the new control methodology introduced in v1.0.3 of Photon causes a timeout for these tapes.