21st June 2021
The Global Media Site for Entertainment.

Do What You Love. Love What You Do.

do what you love
By Michael Cassera

I love retro computing. In my home office, I have a Commodore 64 on my desk next to my regular workstation. I’m not so much of a gamer. Rather, I enjoy programming this 35-year-old computer. Manipulating bits and bytes to make a normally docile machine come to life and do what you tell it to do can be rewarding. Moreover, it can help you understand the more modern equipment used in today’s theatres.

Assembly language is the language native to a Commodore 64’s central processor. Learning how to program this machine has taught me the ins and outs of digital processing. I’ve had to learn how to manipulate a single bit in the computer in a way that is useful, a way that can make the machine function. In a computer, a bit is the smallest unit of data, and when combined together with other bits, they contribute to the passing along of information and, in the end, getting things done.

Interestingly, to me, at least, the Commodore is an 8-bit computer, and most moving lights, the ones that you’ll find in today’s theaters, are 8-bit digital electronic devices, as well.

DMX, which connects the console to its devices, for example, is an 8-bit communication protocol. (For those of you who nerd out over these things, I’ll add this: sure, some fixtures have 16-bit parameters, but that’s simply two 8-bit bytes combined to give you finer control of a parameter. )

As a theatre lighting technician, I did not have to learn how and why a single DMX channel transmits between 0 and 255 steps or the reasons behind the dip switches settings. These understandings came naturally to me because I’ve been playing with computers since I was a kid.

The 35-year-old computer and the modern electronic lighting fixture are much more related to each other than one might think.

Whenever I work (or play) on my vintage computer and learn about something vital about its functions, I also learned something fundamental about how other digital equipment functions, including show equipment.

I was blind to this relationship for many years. I thought that what I had learned from my hobby and what I was learning about moving lights were mutually exclusive.

They were both electronic devices, but after that, they were not related. It wasn’t until I realized I could, with a bit of extra hardware, turn my Commodore 64 into a single universe lighting console that I started to make these connections.

Should you go out and find yourselves an old Atari, Radio Shack, Commodore, or Apple computer and play around with this vintage equipment? If you’re a lighting technician, aspiring or established, maybe.

More importantly, and regardless of your role in the field, take a look at the things that you already love to do outside of your theatre. What you’re doing outside of the theatre might apply, in some unexpected way, to your profession, and these discoveries and connections just might inspire you to love your theatre life even more.



Also by Michael Cassera:

Losing The Cord: Converting From AC to DC

DMX Demystified

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