(Topic ID: 244666)

JJPOTC Treasure Chest Open/Close mod, now working!


By pinballj

4 months ago



Topic Stats

  • 1,095 posts
  • 99 Pinsiders participating
  • Latest reply 10 hours ago by harryhoudini
  • Topic is favorited by 83 Pinsiders

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Topic index (key posts)

4 key posts have been marked in this topic

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

Post #185 Everything needed to make your own chest-opening mod... Posted by pinballj (3 months ago)

Post #615 Code for lighting mod controller Posted by harryhoudini (63 days ago)

Post #925 Adjusting switch for mod when chest lid doesn't work Posted by harryhoudini (33 days ago)


Topic indices are generated from key posts and maintained by Pinside Editors. For more information, or to become an editor yourself read this post!

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#493 82 days ago

I guess putting his daughter under the cardboard would save the flooring.... but ...

2 weeks later
#625 63 days ago

In and working...knock on wood everything seems fine. Mounting the box was tough with the self tapping screws. But so far so good. Once you play it, you realize why it should have been in the production game. So much easier to see where you are at.

#668 62 days ago
Quoted from SDpinballer:

Hi Harry, The chest lid mod it is in place and working well. Was easier than I thought it was going to be. There is one trouble - it is working opposite of what it supposed to be doing. Game starts with lid open. After LOAD and CHEST activated and “ shoot the chest to lock a ball,” then the lid closes. When I lock a ball, the lid opens back up, etc. is there an easy way to fix this now since everything is adjusted so perfectly?
PS. First post on this mod and it’s an excellent one! Nice work! (To all involved).

Same thing on mine. What I did was instead of having the arm point down like in Harry’s video I flipped it up. Didn’t need to flip the polarity then.

#724 57 days ago

For the life of me I cannot get the Arduino programmed. Just never recognizes it is plugged in. Tried a PC and Mac. Tried 3 different usb cables. Tried with game powered on and powered off. I go into the port settings and never see the nano recognized as being attached. Any recommendations here?

#731 57 days ago

Finally got it working. I am guessing the Nano is a knock off. Needed to download the CH340/341 drivers as the official Arduino drivers don't recognize the com chip. But thankfully all is good now. Will need to take another look as it seems to be rubbing somewhere a bit. But if anyone is having problems getting the port recognized, it is the USB driver. You can't use the official Arduino drivers.

Thanks Rdoyle1978!

#749 56 days ago
Quoted from gumnut01:

My chest lid adjustment ended up with the lid higher on the right side. There is a bit of a gap. Before I tightened the adjustment screws the lid sat flat at the front. I know it always has a gap at the back. Does anyone else have this problem? Can only see left right and back forward adjustment, no up and down.[quoted image]

I was able to get mine completely closed in front. No idea what the back looks like. Definitely took a lot of tweaking but no need for cutting.

#753 56 days ago
Quoted from gumnut01:

Can you send me an image? Thanks!

Just took a look...back is definitely not pretty and lifted up. Here are some pics.

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#763 55 days ago
Quoted from gumnut01:

Nope. Thought I was stupid. Only sometimes. Checked servo arm as chest was actuated. Goes from 3 o’clock to 5:30 back to 4:30. So not wrong arm. Servo is moving to a set position then travelling back.
Is anyone else experiencing this with v1.1?

Have not heard that one yet. Sorry!

#782 52 days ago
Quoted from KevInBuffalo:

Installed and working! Here's some video: https://twitter.com/buffalopinball/status/1165806054627794944?s=21
Note that I had to install it at the 12 o'clock position for it to work correctly. I tried both the 1.0 and 1.1 code on the mod and the rotation direction was the same on both code revisions.
Took me a couple hours (not working super quickly) but everything was pretty straightforward thanks to the install vids. I wouldn't say it's a difficult mod, it just takes time. And the results are worth it, IMO.

That is much smoother than mine. I have little micro steps in my movement. Will have to take a look and see what is rubbing on mine. Thanks for the video!

#802 50 days ago
Quoted from vireland:

Here's the lid with straight 5v and no stepping commands to get it to/from open close, but using a direct command to the open/close position instead. I don't think it's too fast.
[quoted image]

Hate to say this but I actually like the open fairly slow like Harry’s currently and your close speed, like it slams shut.

2 weeks later
#893 35 days ago
Quoted from Zora:

I am experimenting a bit with the connection between lid and servo. The metal rod is very stiff and due to the tweeking of the rod at the top it seems that there is a little turning pressure at the servo connection. I tried a cord (nylon cord might be good as well), and it works quite well. There is no obstacle, the cord moves without touching cables or playfield.

Any pics? Sounds like a good idea.

1 month later
#1091 1 day ago
Quoted from arzoo:

Are these necessary? I've yet to install the mod so I don't know if I need this?

I did both. The rod was much easier to install. But both got to the same end result eventually.

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