Weapons Control Panel

So I started taking a closer look at the various panels I got with the old #ViperPit, which is a challenge in itself, since not everything has a handy badge telling me what it is. It’s also not like I’d have a clue in the first place. Figured out that this one apparently belonged into a #Panavia #Tornado but I don’t know the exact model yet. It was installed in the rear cockpit on the left side of the front panel and operated by the Weapon Systems Officer and is apparently no longer in use since ~1990. It’s safe to assume that this thing did see action and was closer to space than anything else I own.

Side view of the buttons array

Next was finding out how this thing is wired to see if I can convert it into a button box for PC gaming. The segment displays look pretty straight forward and I’ll definitely need some multiplexers to drive them but that has a low priority. The switches can easily be checked with a meter but thanks to @kranfahrer@mastodontech.de I was able to track down some wiring diagrams as well. Turns out these are not also very old but apparently rather pricey too? Someone mentioned an eBay offer for whopping 300 USD for a single button – which is insane to me 🤯

Backside of the Tornado WCP showing beautiful cable lacing.

Speaking of wiring: The backplate may be missing but some of the original cable management is still in place. This is where we can see the rather beautiful cable lacing, which is used in avionics for bundling together wires with waxed nylon or linen cord in an environment with lots of shaking and vibrations. No I didn’t know this before and would probably have ignored it but A Hornet’s Nest just released a video about Cockpit Cable Management where he talks in detail about this technique. Great channel!

The lamp used in one of the buttons is not even LED yet

Another question was for what voltage the lamps are designed for. Each button comes with at least one lamp. This is a rather old fashioned and not a LED yet (and in fact LED replacements are rather expensive even). This specific one is the model OL387 rated for 28V DC and 40mA. Apparently this all is up to military spec MIL-S-22885 and bright enough to still be readable in sunlight and comes with high duty cycles before it needs replacements – so it will probably last a lifetime in my man cave 🤓

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