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Artificial plant light?? Answered

So I am trying to crate artificial light for plants at night. I would like to have an IC that can switch during a certain number of hours at night. I want the IC to turn on around lets say 1900 with red leds and a few hours later blue leds come on. I also what to put a LDR on it that way it turns off in the moring when the sun rises. I have looked on here and couldn't find anything with an ic that can do that any suggestions would be much appreciated

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stev69
stev69

4 years ago

obviously depending on the type of plants your growing will determined the levels of light you require. Also if they are flowering, fruiting plants they will need high levels of light and the only lights in that case would be High Pressure Sodium Lights (HPS). In an Ideal world plants need lights that have more of the Blue spectrum when they are growing (green growth) and lights that have more of the red spectrum in when they are fruiting or flowering. For Blue spectrum you would want Metal Halide Bulbs (MH) and HPS for the flowering fruiting stages. however HPS will work fine for all stages. I mention this simply because switching a few of these lights would be a different ball game compaired to LED's due to the high current demand when Ignighting. For this you would need a contactor because regardless of what the claim a normal timer is just not good enough neither is a relay. the high current simply welds the contacts together meaning they won't switch off. However If you already know that leds are good enough to meet your requirements then none of that will be an issue. I don't know how much you know about electric but you can buy a fully controllable timmer/ relay that would fit straight into your fuse box along side your circuit breakers. tell you what easiest thing is for me to dig a few bits out me shed and take a picture but in a nutshell depending on how valuable your plants are to you will obviously govern how much you want to spend but essentially then your going to want a timer digital if power cuts are a problem (battery in memory) it will always be accurate a 24hr immersion heater timer works well in overall control of the circuit going through a photo cell (dawn till dusk) so the timer could switch on but lights couldn't come on until it was dark, same switching off either when it gets light or whenever you set your timer for whichever comes sooner. also you can have more than one set of switchings on &off's in any given 24hour period so you could run 2 different cables to 2 different sockets for the different lights. a better way would be with one of those relays I mentioned earlier (i'll get the details shortly) with that you can switch the power from 1 set of lights to another within the time frame alreay set by the main timer. i.e. if the main timer was on for say 6 hours when that switches on the relay timer would also start which you could set to switch after say 3 hours changing the power over from one circuit to another but ultimately governed by the main timer. it depends on the electrical loading as to what if any contactors or relays would be needed. led's would be fine they're only minimal amounts of current.

I'll return with pictures of possible configurations.

hope this helps

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rickharris
rickharris

4 years ago

1. plants need a light dark cycle.

2. you can extend plant growth by making the "day" longer

3. You will need a range of light covering the frequencies in normal day light, i.e. rather bluer than out artificial white light.

4. you can buy grow lights and for the most part this is probable best and most cost effective.

Buy a simple timer switch or two in any hardware store and your plan is complete.

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uma111
uma111

Answer 4 years ago

+1