(Topic ID: 244666)

JJPOTC Treasure Chest Open/Close mod, now working!

By pinballj

4 years ago


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4 key posts have been marked in this topic

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Post #7 Working prototype video Posted by pinballj (4 years ago)

Post #185 Everything needed to make your own chest-opening mod... Posted by pinballj (4 years ago)

Post #615 Code for lighting mod controller Posted by harryhoudini (4 years ago)

Post #925 Adjusting switch for mod when chest lid doesn't work Posted by harryhoudini (4 years ago)


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#1167 4 years ago
Quoted from MurphyPeoples:

Yep - I voted for it. : )

Me too!

I have the star field mod and the chest opening mod, but I have to admit I've been really intimidated with the install for the chest opening mod so I haven't tried it yet. Is it best to do the chest opening mod first, then starfield? I also want to make sure I have enough continuous time set aside to get it done in one sitting. What is a reasonable amount of time to expect it will take to install?

4 months later
#1250 3 years ago

I finally took the plunge and decided to install the chest opening mod. Physical install went fine, but I cannot get the arm to move the lid at all. I have the newer flex rod assembly, so I followed the video instructions as best as I could but since that is the ball and rod version maybe I am missing something? I even tried modeling it after the pics of VolunteerPin above. I have the 4 prong wheel and his is the two prong, but I tried positioning mine like his and like in the video even though, but still nothing. From a glance it seems like my flex rod is too long and has too much slack to make anything happen with the chest, but with these flex rods you don't trim it, so I am kind of at a loss. Anyone have any ideas, words of wisdom, encouragement? I really want to get the game back together and start playing it again.

#1252 3 years ago
Quoted from harryhoudini:

Can you post a pic of what you are seeing as far as the rod alignment?
You can trim the flex rods, but they should not need to be. There should be enough adjustment on both ends to give you 1/2" or more of play. Ideally, if you can take a video of what is happening above and below the playfield that would help.

I'll get some pics and/or video. Appreciate the help!

#1254 3 years ago

Okay here are some pictures. I know I don't have the bottom connector on all the way I was just doing that because I was moving it around to test different positions and this was the last position I tested. I've tried it with the flex arm on both sides of the wheel and from behind and from the top but I can't get anything to move. The servo moves but it just seems like there's too much slack to have any effect on the chest. When I manually move the flex arm I can get it to work just fine so it doesn't seem like it's bound anywhere.

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#1256 3 years ago
Quoted from harryhoudini:

The connection to the servo is not in the proper position. Yours looks to be about the 3 o'clock position (when the playfield is raised) and it should be in the 12 o'clock position (the arm pointing at the ceiling when the playfield is raised).
The rod should not be bent at all, it should be a straight shot.

Okay I'll give that a try. I've just been playing it with a chest closed so I've been content but I would love to get it working.

#1257 3 years ago
Quoted from harryhoudini:

The connection to the servo is not in the proper position. Yours looks to be about the 3 o'clock position (when the playfield is raised) and it should be in the 12 o'clock position (the arm pointing at the ceiling when the playfield is raised).
The rod should not be bent at all, it should be a straight shot.

When I have it in the 12:00 position with no bend in the flex rod this is what it looks like on top. It just wants to bunch up either on the bottom or the top like it's too long.

IMG_20200511_153939 (resized).jpgIMG_20200511_153939 (resized).jpg
#1258 3 years ago

With no slack on top and without me even pulling the flex rod tight this is how much extra space there is at the bottom. I don't see how it can work with this length of flex rod. The servo just doesn't turn enough to make any difference because there's so much slack.

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4 months later
#1274 3 years ago
Quoted from djsoup:

I'm having issues with this mod as well. Got it installed, it raises and lowers upon boot up but during gameplay its doesnt move at all, just stays open. I've tried everything and cant get this thing to work correctly. Also after I installed the star field galaxy mod the star map decided to stop working altogether.

I've never been able to get my chest opening mod working correctly. I've been playing the game with the chest lid closed for the last 6 months.

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