These are the joysticks of my childhood! Even if newer ones are cheap, I’d like to re-use those. Just because… (Besides, otherwise, what’s the point of having kept them in a box for 40 years! :)
I have 2 of them. One is basically working (as I already took parts from the other one to keep that one in condition – did that when I was a teenager). The other one is in poor condition:
Problem 1: flaky contacts
Sometimes, the directional control does not seem to work…
As you can see, the contacts are a bit dirty…
TODO: Clean with alcohol first. If not sufficient, try contact spray.
Problem 2: fire buttons don’t fire at all
First, the contact system SVI used for fire buttons is even worse than for the directions:
There are little metals caps affixed with plastic tape. I already removed one cap on the photo. The photo is a bity blurry (sorry) but those contacts are also slightly oxydized and will also be cleaned.
But there’s more:
Here you can see the red trigger buttons from the working jostick (left) next to the ones from the faulty one (right).
See any difference?
It’s very tiny…
There are very small pins that are there to press on the metal contacts. Thet are barely over a millimeter long and wide. In the non functionning joystick, both of those broke off.
These look like stress concentrators that were deliberately designed to break after some time… :/
Potential solution: 3D print fire button extensions to replace the broken pins.
So I took measurements:
Index trigger
Thumb trigger
Sadly both have different dimensions, so it will be twice as much work, but…
TODO: Design little caps for these crosses so we can make them long enough to press the metal contacts.
My idea is to have pieces that slide over the cosses and can be glued in place once the fitting matches.
To be continued…