This is a pretty clean and quick way to get going, nice find. Only concern I have, is trying to get a dimming cycle clean enough that it won't bug my eyes. If you happen to be in the garden at sunrise or sunset, it will likely be a lot of flickering effects. Most notably at the lower end <15%...
Sorry for the late response, notifications got turned off on me. Here are a couple of options.
https://aquarium-led-controller.com/product/bluefish-led-controller/
https://www.nano-reef.com/forums/topic/324859-meepduino-20-released/
I use it on 4, I see no reason why it wouldn't work. You'll want to check voltage sweep with a volt meter if you have one. Just make sure you're getting full brightness 10+ volts. The pot will be the limiting factor, but the dim output is pretty weak, I wouldn't think you'd overcome its capacity.
You cant go wrong with egg shells. They are great for calcium and a lot of trace elements. However, if you dont properly kill off any selminila that might be hanging around, you'll introduce that to your plants. Need to bake them for some time, usually around 180F for 45 mins does the trick...
Try a 100k potentiometer. I have no experience with the rapid dimmers, but 100k pots work well. Just watch you dont dim too low, or add a resistor in line with dim- and negative leg of your pot, that will keep you around 1v. I think around 10k ohms should be right. It will also bring your max...
Internet of things(iot) devices need a controller. Your controller will be the what controls the relay function. If said controller has the ability to dim, that would be as easy as time or percentage based on your program.
Technically yes, but meanwell drivers are not supposed to be dimmed bellow 10%. You'd be better off using a timer, or a relay to do the switching, and the transistor to provide the dimming function
I'm not sure it's going to work for you. Voltage loss through the unit will not allow you to achieve max brightness would be my concern. Also, without looking at a data sheet for that controller, it says 12-24v you're only providing 10v. Also, 20% would/should be 2v, not 3. I'm not sure if 1...