Re: PLC Program for Lighted Arches
As others have said in other threads: welcome to the club.
Most of us handle things like leaping arches via a 120vac controller -- how many channels depends upon how many arches and how many channels per arch. I would hope by now you've visited the "Arches of Light" subforum where you can read up on how people here do this.
When you use the term "PLC," I assume you mean "programmable logic controller," which is a foreign term here. The controllers discussed here are do-it-yourself projects; the engineers amongst us design printed circuit boards and those are then offered for sale (usually at no price markup) or as files for self-etching; lightmasters then buy components (from Mouser or one of the other electronics mail order houses), solder up the results and have a controller.
The controllers here use one of two basic protocols: DMX-512 or Renard (the latter is a protocol designed by people here and documented on the wiki; the former is the entertainment lighting system). The Renard can be driven serially or via RS-485. The controllers use either Microchip-based microcontrollers or Atmel microcontrollers.
Most people here share their hardware designs as schematics and firmware code as C or assembly (there are exceptions).
Controllers can be either centralized, where the solid-state relay is housed with the logic circuits, or decentralized, where the SSR is remote from the logic circuit.
We mostly synchronize our lights -- leaping arches and others -- with music and use the Windows application Vixen to do this. We are open about sharing our Vixen files and if you find a song you want to use and post, someone may certainly have a synchronization file they'd be happy to let you use.
Please visit the wiki's "Beginners" section, where a huge amount of info is available.
The only thing more dangerous than a software engineer with a soldering iron
or a hardware engineer with a compiler is a liberal-arts major with either.
[b]Christmas lights:[/b] [url]http://www.PacificaLights.info/[/url]
[b]uC/LED hacking:[/b] [url]http://www.dmcole.net/[/url]