One would do this mod to either get around the 4amp max per channel limitation or perhaps enable the use of LEDs with different voltage requirements right?
Can you draw some diagrams or take some pictures to show how the LDD driver is hooked up in relation to the TC420? I'm having a hard time picturing how it is hooked up based on your description.
first one would do it to dim constant current PWM controlled drivers. So yes, in a sense, to exceed the "limitations" of 4A per channel BUT not to control things like large Beamsworks..
for that you could, theoretically, replace the on board Mosfets *the 5 little squares in a column on the right side.
THOSE are what limits the current capacity..
you may be also able to cascade them (add another set of MOSFETS like we did above (using the internal MOSFETS to control another MOSFET )but that gets "complicated" )
As to the LDD arrangement, I'll scribble something up later..
Basicaly though on an LDD you have 5 wires.. The dim wire will go to the added wire to the tc420..
The rest depends on your power needs for the LDD strings.. IF you can get away w/ one that is within the 12-24 range you can 1)power the TC-420 and 2 power the string BUT bypassing (not connecting) anything to the MOSFET outputs (5 screws listed ch1,2 ect..)
An internal voltage regulator is what feeds the logic circuits..Actually that is why the TC will actually be powered by less than 12V in reality..I suspect you could go close to 5 and still get it to function.. BUT driving constant voltage LEDs w/ 5 volts is pretty silly for outr uses.. like 2 diodes in series and x parallel. up to 4A (ignore this it is probably more confusion than needed..
The "plus" on there is just common to both input and output..
If your ps exceeds 24V you really shoud use 2 ps 1 for the tc one for the leds.. Only catch is to creat a "common ground" 2 the 2 power supplies.
fortunately, in my case, my 56V DC ps has both a 5V and 12V rail..
so all I had to do was jack it into the other input (left side has a barrel jack for power). The ps formed the common ground.
Though I did use a 9v PS (actually more like 11) to power the TC-420 and a 24v ps for a LDD "test strip"..and a common ground .. worked fine..
just pretend the tc420 is the Storm
What they don't show its the power to the Storm (or TC in this case)
RED wires on the Strom coming from the PWM outs is the same as the added wires to the gate of the MOSFET (5v PWM signal)
as a side note the barrel plug size is the same as the one for the Typhon (same polarity as well so it was plug and play for me) from Steves, and prob same as the Storm X
considering the TC-420 is only marginally cheaper than a Typhon BUT w/ one more channel and a computer program interface, one would need to consider what they need..
I did it because I didn't want to build a box for the Typhon AND wanted to more easily reconfigure via USB..
build note.. Cat5 wires fit easily into the slot behind the screws BUT it is easier if you remove the screws first
Using the screw as a strain relief is also possible..