Build Your Own SLA/SLS

as pomeroyb please link to your firmware , so we can check , also what control board or schematic design are you following general point if stepper motors are not working is to see if when powered up the motor shaft is solid to turn if they freely move you have a problem . if the stepper drivers hav...

modifying projector depends on what dlp printer you have but mostly consists or removing a colour wheel ( if it's fitted ) and introducing uv light , it is possible with some you dont need to do anything a good model is the acer 6104 the DLP projector is connected 2 ways 1 the rs232 control port is ...

you do not say what you are connecting , but you are trying to connect both a dlp projector and your controller board to com4 i.e both the same usb ports .. this will lock up the usb machine connection = your arduino controller projector control = your dlp projector if you have any further problems ...

great glad you found it in the end ! regarding salt water , i'm skeptical it would work , are you using Tap water or distilled water, distilled will be far better , and last longer , as is at least free of any Contamination if the resin is sinking , i would hazard a guess that it's either going off ...

quickreplier: yes altering the code can be done, and also using CW is an option , with some code written for it (plugin) however their are many commands used that are projector specific communications , so knowing what projector you wish to change to would be required , and you would also need to ma...

i'll pm you

i'm wondering if you have the stepper enable configured incorrectly and it's working in reverse
the pots are only single turn , so once you reach max , it will drop to zero and start again , theirs no stops on the pots as you found out

what software / interface are you using ?

what software are you using to drive the galvo's etc ?
and i'll try and replicate your setup here
as Pacmanfan suggests it appears to be that your slicing at to wide in x y what ever your set at , try a test at 50% less

you do not give details of your DLP Projector or details of the polymer has this worked in the past and has developed this problem , or are you trying to match a projector etc , one thing to look for are additional filters and is the optic path clean etc , lamps do develop low light levels over time...

i am at a loss what you need , all parts and drawings including the arduino code are available for download , along with the pcb artwork
anyhow let me know what you need .