I apologize if I missed it, but what is a good starting point or reference to look at for connecting this up to a Twinstar light? I currently have an in-line dimmer, but I've noticed that it sometimes changes settings. I'd also like to implement a ramp, but that's not possible with the Twinstar in-line dimmer.
I should probably do a complete write up on my build at some point I guess, but hereís the rundown.
- Raspberry Pi
- Mosfet Trigger Switch
- Barrel Plugs
The trigger switches I used are along the lines of these:
These also look like they might work, but I havenít used them. Their rating is a bit lower, so Iíd prefer to use the above version when talking about the 900 or 1200 Twinstars, just so you arenít pushing the limits of the specs.
The barrel plugs need to match the Twinstarís plugs, but they are fairly common: 2.5mm ID x 5.5mm OD DC power plugs. Just be careful of power rating on the cables if you plan on cutting and splicing an extension cable for this, since Iím seeing a couple cables available rated for 3A, but the higher end Twinstars are 4-5A. I used eBay to source some connectors for my build.
Just make sure the cables are *not* 2.1mm ID. Those are also common, and wonít fit.
My build using a Pi Zero looked like this: https://www.plantedtank.net/forums/2...l#post11106489
Plug it between the Twinstarís power supply and the LED fixture, and then configure RPiLight and start the service. Iíve been running my 900E this way for well over a year now. I do get some coil whine from the Twinstarís power supply because of the PWM though, but not much that can be done about that.