voztimbrada
Member
Hello all. I really could use your help and expertise on this one. I run a small entertainment company, and three of our productions are in residence at a small theater. Because we have such a presence at this particular theater, I provide tech support for the theater owner when I can. He recently ordered these wall washers from China, and we are having a hell of a time figuring them out. I've included pictures below, in case any of you might be able to shed a little light on this (pun intended). He has spoken to the company for support, but the language barrier combined with our frustration with poor customer service has kept us from coming up with a solution. He ordered these with the understanding that they were DMX based LEDs. We have discovered that perhaps they operate on some other protocol. I could be wrong. Anyway, the connectors are some sort of 4 pin format. The company told us that the four wires are D+, D-, Ground, and Internal Control Port, or something to that effect. I have worked a little bit with SPI, and have installed controllers/drivers etc. but in those cases, I knew what I was dealing with in terms of protocol. This one has us stumped. When we connect D+, D- and Ground to a DMX controller, the behavior is strange, and it doesn't automatically address to channel 1 the way we would expect. I'm thinking we need some sort of driver or decoder to make this work, but we can't get the company to specify what we need, or what kind of protocol we're working with here. We need to be able to connect these to a standard DMX controller or board. We're looking for a way to individually address a group of 16 of these instruments. The four wire thing would make sense if it were SPI, but the descriptions they gave us don't seem to match the SPI set ups I'm familiar with. Forgive me if I don't have the lingo quite right, but I think you lighting experts will get the jist of what I'm saying. Here are the photos. What are we dealing with here? Does anyone know?
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