Hi Folks,
There seems to be some confusion about this little board. I feel really bad that it is not clearly explained in the Wiki. So this is an attempt to correct some of the confusion.
The SSR4 has two modes.
- 1 - Base mode (No DMX) - just a 4 channel relay
- 2 - DMX mode - A 4 channel controller
Meet the Base SSR4
![](http://diylightanimation.com/wiki/images/5/51/Ssr4-5.jpg)
Notice that there is some missing parts. This is fine, it just does NOT have any "smarts" to receive any DMX info from the dongle. In this Relay mode you need a controller to be able to use it. You are not allowed to view links.
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Meet SSR4 DMX Mode
![](http://diylightanimation.com/wiki/images/6/69/Ssr4-9.jpg)
Now its a fully functioning 4 channel DMX controller, in fact it is the same board as above but with some added parts. This is also the only way it can receive wireless DMX info. By removing the RS-485 chip and plugging in the Express Module with some extra parts. You are not allowed to view links.
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Now look at the two pictures. What else has changed?
The Jumpers.
In the top picture the C/S jumper is on the S side and the other Jumper (can't see the silk screen text in the picture) is just S.
In the bottom picture the C/S Jumper is on the C side the S jumper is not jumped.
The bottom picture also adds a Program/Operate Jumper which is used for Operation mode or Program mode to set the start address.
The other jumper in the bottom picture is the TERM jumper (can't see the silk screen text in the picture) which is the terminate, the jumper next to the blue transformer and the DMX out connector (RJ-45)
The terminate jumper is only needed for the LAST DMX device in line. Of course there could be more than one end device when you use a splitter (either on the Express or the Lynx splitter) and each one of them will need the term jumper on.
Ok, now one final thing that may or may not be obvious is the fully functioning SSR4-DMX can be jump convert back to relay mode by setting the C/S jumper to S and jumping the S jumper.
Well one more final thing
![Cheesy :D](http://diylightanimation.com/Smileys/default/cheesy.gif)
What does SSR4 mean?
Solid State Relay 4 Channels
Hope that helps some
Cheers
Rick R.
P.S. Please add info or correct any mistakes (real or imaginary)
Feb 17, 2010 1pm
Here is a sample of how the SSR4 and Freestyle can be connected to the DMX (or not DMX) line to control 4 mini trees. This is not the only way just something I threw together at lunch time.
![](http://diylightanimation.com/wiki/images/b/be/SampleSSR4-Freestyle.jpg)