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(Topic ID: 244666)

JJPOTC Treasure Chest Open/Close mod, now working!


By pinballj

1 year ago



Topic Stats

  • 1,288 posts
  • 119 Pinsiders participating
  • Latest reply 9 days ago by Jecco74
  • Topic is favorited by 90 Pinsiders

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Topic index (key posts)

4 key posts have been marked in this topic

Display key post list sorted by: Post date | Keypost summary | User name

Post #7 Working prototype video Posted by pinballj (1 year ago)

Post #185 Everything needed to make your own chest-opening mod... Posted by pinballj (1 year ago)

Post #615 Code for lighting mod controller Posted by harryhoudini (1 year ago)

Post #925 Adjusting switch for mod when chest lid doesn't work Posted by harryhoudini (1 year ago)


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#861 1 year ago

Installed the chest mod over the weekend, but ran into a problem. Once installed and powered. the mod does not move.

I removed it from the game and did a bench test with a 5V power supply and it works fine. Did a voltage check on the plug on the game and read 4.65V. With the mod on the bench power supply, I turned the voltage down to 4.65V and the mod does not move. Further testing shows a threshold of about 4.75 volts which must be met for the mod to move.

Is this a hardware limitation of the mod?

I have a tentative plan to install a 5V buck/boost regulator on the mod input, but am wondering if anyone else has seen this problem or has any other suggestions to fix.

#864 1 year ago
Quoted from vireland:

Most likely the switch arm not bent out enough for the fork assembly to trigger it. Put the forks up and manually click the switch and see if the servo works.
Might also be the power connection to the fake nano board. Does the light come on on the circuit board?

The problem is no operation at 4.65V which is what my game delivers. Switch and power connections are fine.

#869 1 year ago
Quoted from harryhoudini:

I'm seeing about the same at all 5v plugs I tested in the game. The Arduino specs say it needs more but so far everyone has seemed to have no problem. There are options... one would be tying in to the 12v line which might be closest at the map disc motor, if not possible then going to the coin door or backbox would be the next option. Arduino can take up to 12v so that certainly could work, although you shouldn't need to based on the historical evidence of no one else having an issue.

The Arduino can take 12V. What about the servo?

#878 1 year ago
Quoted from harryhoudini:

Strange. I'll check my voltage, but that is coming from the PC power supply so it should be fairly consistent.

Given that I seem to be the only one with this problem and 50+ other (successful) installs of this mod I think my problem is one of:

A) My game has an abnormal 5V level at 4.65V

B) I have an abnormally sensitive (to turn on voltage) Arduino Nano

A lack of other games and a lack of additional Arduinos make both of these difficult for me to confirm. Perhaps other owners can measure theirs?

In any event, I need to get this mod working. I've ordered the the following which should do the job:

https://www.robotshop.com/en/5v-step-up-voltage-regulator-u3v12f5.html

#919 1 year ago
Quoted from Psw757:

Need a little help, got it all installed.
When I power the game on the chest opens and closes as I would want, have good fit and alignment however when I test in game play by hitting the two shots the chest does not open and when a ball is fired into the chest, nothing either.
Any Ideas?

Check limit switch adjustment. When forks move, switch should change state.

#955 1 year ago
Quoted from JimWilks:

Given that I seem to be the only one with this problem and 50+ other (successful) installs of this mod I think my problem is one of:
A) My game has an abnormal 5V level at 4.65V
B) I have an abnormally sensitive (to turn on voltage) Arduino Nano
A lack of other games and a lack of additional Arduinos make both of these difficult for me to confirm. Perhaps other owners can measure theirs?
In any event, I need to get this mod working. I've ordered the the following which should do the job:
https://www.robotshop.com/en/5v-step-up-voltage-regulator-u3v12f5.html

Got the boost regulator. Boy is it small!

pic (resized).jpg

Installed it and mod is working fine now.

Sorry for the pic being out of focus, but you get the idea of size relative to a dime.

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