Testing New LED Displays From Australia For Classic Bally and Stern Solid State Pinball Machines

Today I’m testing some new LED displays that come from Australia.

These new LEDs are a drop in replacement for the standard high voltage displays, but use less power and look almost identical to the original displays.

They’re produced by Wayne Hamilton out of Australia. Here is where you can find his products:

eBay: https://www.ebay.com.au/usr/omfug1190

GeekPCBs: https://geekpcbs.au/

Upgrading the bottom speaker on a modern Stern pinball machine

The woofers that Stern puts in their games are pretty flimsy. If you accidentally drop the playfield on them – ooops, you can dent the frame and make the speaker sound like crap. So now I have to replace this speaker but you can find far better quality replacements on Amazon that will drop right in. Here’s a quick video on how to do that without having to spend $100+

A great upgrade for lighting arcades & pinballs

As work continues repairing this Frogger video arcade, I was planning to do a video on retrofitting the 18″ T8 fluorescent bulb that lights the marquee with an LED (and removing the ballast wiring) which is also used on some pinball machines from the 2000s, I discovered an even better lighting option you can probably find at your local Lowes. Check it out.

Here is the bulb in question:

Link: https://www.lowes.com/pd/GE-Color-Correct-Technology-15-Watt-EQ-18-in-Daylight-Linear-LED-Tube-Light-Bulb/5000762911

A look inside the latest Multimorphic P3 Pinball Systems: Heist & Weird Al’s Museum of Natural Hilarity

In this video designer Stephen Silver shows us the inner workings of the P3 system. It’s a very interesting and efficient design that makes the game surprisingly easy to service, with lots of features not found in typical pinball machines.

Building a custom micro-controller for early Bally/Stern solid state pinball machines

This is an introduction to an up-and-coming technology that a small group of pinball and electronics enthusiasts are developing. A custom microcontroller that interfaces with Bally-35 MPUs and allows you to write customized rulesets, even completely re-theming games. This is the first part of a journey that I hope to take everybody on.

NOTE: This is a video I recorded several months ago that I forgot to make public, so I’m much further along.. But thought it might be interesting to show this early look at the development of this technology. Now there are etched boards that can be acquired.

Quick demo of fully-modded Stern “Trident” pinball with new rules and sound

After getting my Trident operational, I installed the BSOS system and have been working on fine-tuning the custom code and sounds. Here’s a short demo of what the new Arduino-based controller does to a standard Bally 18/35/Stern early solid state game.

Resources (courtesy Dick Hamill):

The code is all available on GitHub. It’s broken down into a base library and then machine-specific implementations. Rewriting other games requires a moderate knowledge of C/C++.
https://github.com/BallySternOS

Here’s a suggested parts list. If you bought all these things, you could create 6 of these boards. If you don’t need that many boards, you might find cheaper ways to source smaller quantities. I haven’t done any work to figure out if this is the cheapest way to source any of this stuff.

Cheap Arduino knockoff x6 ($20.99) – needs CH340 driver for programming / has to be ATmega328P
https://www.amazon.com/ATmega328P-Controller-Module-CH340G-Arduino/dp/B08NJNJCTX/

0.1″ 40-pin connector (40 pieces for $7.99)
https://www.amazon.com/Honbay-Single-Female-Connector-Arduino/dp/B06Y4S6G29/

32-pin Prototype PCB (2 pack for $9.99) – this won’t work for Alltek or MPU-200 because they have a 34-pin connector
https://www.amazon.com/Prototype-Snappable-Arduino-Electronics-Gold-Plated/dp/B081QYPHHP/

Wire ($7.99) – tons of wire
https://www.amazon.com/REXQualis-Breadboard-Assorted-Prototyping-Circuits/dp/B081H2JQRV/

74125 – ($1.95) https://www.jameco.com/z/74125-Major-Brands-IC-74125-Quad-Tri-State-Bus-Buffer_49373.html

Boot switch – x2 ($8.99) this switch will work for activating the Arduino board and toggling the speaker (see the writeup here to find out why: https://ballysternos.github.io/install.html)
https://www.amazon.com/gp/product/B07XMH174C/

OR

@RoyGBev has created a PCB and kit (doesn’t include the Arduino) here:
https://pinside.com/pinball/market/shops/1304-roygbev-pinball/04736-arduino-nano-adapter-for-classic-bally-stern

How to add a switched power outlet to your pinball machine

These days modding games is all the rage: adding fancy toppers, custom lighting, subwoofers and powered speakers and more. But many pinball machines don’t have a facility for you to plug in extra stuff in your game. Many games do have a “service outlet” inside the game, but this is what’s called “un-switched” meaning it’s on all the time – mainly so technicians can use a soldering iron on the game with the power off. In this video I go over the process to tap into the switched power lines of the game to add your own extra outlet(s) that come on when you turn the game on.