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I guess I am making that assumption, in that the I2C will create a similar effect. I am unfamiliar with the digital pots.

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/

You should be able to connect them to a bus, or wago connectors

Sorry, I miss stated. I'll edit my post. Put the 10k in line with your negative side of the pot and dim-

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.

Yes, that should be good.

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.

Correct. You can use an analog pin for the relay and pwm for the transistor

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

Yes they do, there is 10v if you measure with a volt meter between dim+ and dim- Edit- in the HLG line that is

I have the bluefish myself, love it. It's not cheap though.

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...

There are a lot of controllers being made for fish tanks that are emulating the bulk of what we are trying to do as growers. There are even pretty cheap controllers available made from Arduino platforms for this purpose. They have some very good codes, and habe been very good references for me...

Which manufacturer are you referring to? The load of your system is really what is going to determine what size you're going to need. If you have data from a manufacturer saying to use a certain size for a system, I'd trust that is a good starting point.

Plants can "see" in a sense. 'Ref secret life of plants' They don't have eyes, so they can't see as we would, but having the lights ramp up and ramp down helps them not get blasted by 100% light after sleeping all night. I have not read that plants set to first light spectrum, but I'd be...

Only problem with these type of sensors, is that they are meant for prototyping, and will corrode quickly and be useless. There are some diy builds out there for galvanized nails, they have the same issue. Ive built one using some stainless screws, haven't had a chance to test it. I did try the...

Yes, that should work. Can check it with a volt meter too to verify, you should get ~1v per 10k.