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Taking Over The Amazing Control Panel Of A Vintage Video Switcher | Hackaday

tagsHdmi Extender Tx

Where can he buy such a great toy? [Glenn] Caught a part of the grass valley Kalypso 4-M/E video

Switcher control interface from eBay, from

. The history of the hardware can be traced back to the turn of the century, two modules will be arranged together with up to dozens of other modules to complete the video

Switcher console.

[Glenn]’s previous adventure explored into 10 buttons with backlight,

And the technique he used to combine his pin arrangement with the schematic diagram of the bar. But this time things have become more difficult. The bar above is a "machine control plane" module, including twelve addressable character displays, which are driven by a combination of microcontroller and FPGA. The square panel is a "crosspoint switch matrix" module, including eight independent 32 x 32 LCDs, driven by three dedicated ICs, and can be displayed in red, green or amber.

[Glen] used STM8 Nucleo 64 to interface with the panel, and wrote some code to help determine the function of each pin on the control plane connector of each machine. He can flow out some data packets that change with the button press from the airplane, and finally find out the LED display protocol with the powerful feedback of the data packet format.

But the LCD on the crosspoint switch is difficult to crack. He eventually returned to the original source of the device (eBay) and got a work control unit that could be sniffed. He arranged a middle man board with a connector on both sides of the board, and a header for the logic analyzer in the middle. As with most LCDs, the secret lies in the initialization sequence-brute-force cracking is almost impossible, but when you have a working system, sniffing is extremely simple. So far, he has made them run under USB control. If you are lucky enough to put some of these equipment in the parts box, [Glen] has painstakingly recorded all the detailed information needed to start and run them.

"The history of hardware can be traced back to the turn of the century..."

Giz, thank you for making me feel like Methuselah’s brother!

My own reaction:

"But they didn't have electronic video in the 1900s, it's impossible...oh. Oh, *face*,"

I want to know when we start to write or talk about this.

So far, I have doubts about the revival of the "Roaring Twenties".

Perhaps "1 Peter 5:8" is mentioned in the Bible, so stay awake and vigilant. Because your opponent demon walks around like a roaring lion, looking for someone he can devour. "

Old video equipment has excellent buttons and switches. Old Ampex VTR, video switcher, Sony 1-inch machine. Just before the mouse and touch screen era, a very good human-machine interface.

Yes, but modern things are easier to carry :-D

Not long ago, when I was about to disassemble the button and remove the slot of the LED pixel display, I picked up a few grass valley panels for e-waste disposal. Still install them in a certain position in the parts box. . . It is found that it is easier to lay out a new PCB for any project than to bend it for the original layout.

In fact, you have to be careful with some grass valley panels, because some grass panels are made to order and only filled with some display parts. Therefore, a panel on eBay with a large window area (colored) may not actually be filled The load of the socket. Show behind them. It was discovered once.

What is a "video mixer"? That is a video switcher and special effects generator (SEG).

In the UK and elsewhere, switchers and operators (TD) are visual mixers. Although the "video mixer" is not commonly used in the United States, it is functionally speaking, this is almost what it is used for. Around the "turn of the century", the use of many GVG panels has been promoted.

Yes, it is definitely what I call a mixer. Based on my experience in the broadcasting industry, the United States has its own unique terminology and strange requirements that are not found elsewhere in the world.

Very good, I have updated it.

Wow, it's been 15 years since I watched the Kalypso board. I used to work as a process engineer for a contract manufacturer and was responsible for most of GVG's video products. The wave soldering fixture for these boards is a work of art. They have a machined aluminum top plate, and each switch has a conical cavity (the top of the switch without a key cap is round) to ensure that all switches are firmly seated and are in line with the final housing The key cap opening specifications are the same.

Neat anecdote, thanks!

Holy cat! What a cool project, well documented! ! At first I thought there might be a market for disassembling the panels of these large switchers and creating digital switchers for the ribbons, but using the Stream Deck 15 LCD button only costs $160, which may not be a market...

Still a very cool project. These old-fashioned push button machines with cool displays always excite me.

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