I am working on a mod for opening and closing the treasure chest on JJPOTC that I thought I would share my progress on!
I got a prototype working this evening, but it is a REAL prototype (it will break in about 10 more tries lol), as I did a fast print with the 3d printer for sizing and proof of concept.
Here it is in action:
Now it may not look like much movement, because there is not right now. I need to make a slightly longer linkage (it is on order), and I need to make a new bracket for the chest lid. This mod is completely reversible too (no additional drilling, etc reqd).
Similar to how the prototype JJPOTC machines worked, the chest lid is closed when the fork ramp is down. When the fork ramp is raised, the chest lid will slowly open (adjustable in software of course).
The two pictures without the 3d printed bracket I included to show the fork mech screw holes that I plan to use to mount the bracket, as well as the existing slot through the playfield that nothing goes through (maybe that is where the original mech linkage was located at?).
I will do my best to keep progress documented here, but source and design will be available here too:
Rough cost estimate in parts about $25. I am hoping on having this done in the next couple of weeks to where I will make a second one and see if Antz at Zanzabar will let me try it on his CE on location.
I have no clue if this will cause additional ball rejects, but I wouldn't think it would. If it did, I can always adjust the "close height" so that it doesn't close all of the way.